mirror of
https://github.com/Infinidat/infi.clickhouse_orm.git
synced 2024-11-10 19:36:33 +03:00
Merge branch 'develop' into funcs
# Conflicts: # src/infi/clickhouse_orm/query.py # tests/test_decimal_fields.py # tests/test_querysets.py
This commit is contained in:
Itai Shirav
commit
342f06e7b0
24
CHANGELOG.md
24
CHANGELOG.md
|
|
@ -1,11 +1,31 @@
|
|||
Change Log
|
||||
==========
|
||||
|
||||
Unreleased
|
||||
----------
|
||||
v1.2.0
|
||||
------
|
||||
- Add support for per-field compression codecs (rbelio, Chocorean)
|
||||
- Add support for low cardinality fields (rbelio)
|
||||
|
||||
v1.1.0
|
||||
------
|
||||
- Add PREWHERE support to querysets (M1hacka)
|
||||
- Add WITH TOTALS support to querysets (M1hacka)
|
||||
- Extend date field range (trthhrtz)
|
||||
- Fix parsing of server errors in ClickHouse v19.3.3+
|
||||
- Fix pagination when asking for the last page on a query that matches no records
|
||||
- Use HTTP Basic Authentication instead of passing the credentials in the URL
|
||||
- Support default/alias/materialized for nullable fields
|
||||
- Add UUIDField (kpotehin)
|
||||
- Add `log_statements` parameter to database initializer
|
||||
- Fix test_merge which fails on ClickHouse v19.8.3
|
||||
- Fix querysets using the SystemPart model
|
||||
|
||||
v1.0.4
|
||||
------
|
||||
- Added `timeout` parameter to database initializer (SUHAR1K)
|
||||
- Added `verify_ssl_cert` parameter to database initializer
|
||||
- Added `final()` method to querysets (M1hacka)
|
||||
- Fixed a migrations problem - cannot add a new materialized field after a regular field
|
||||
|
||||
v1.0.3
|
||||
------
|
||||
|
|
|
|||
|
|
@ -49,7 +49,7 @@ eggs = ${project:name}
|
|||
ipython<6
|
||||
nose
|
||||
coverage
|
||||
enum34
|
||||
enum-compat
|
||||
infi.unittest
|
||||
infi.traceback
|
||||
memory_profiler
|
||||
|
|
|
|||
|
|
@ -10,7 +10,7 @@ infi.clickhouse_orm.database
|
|||
Database instances connect to a specific ClickHouse database for running queries,
|
||||
inserting data and other operations.
|
||||
|
||||
#### Database(db_name, db_url="http://localhost:8123/", username=None, password=None, readonly=False, autocreate=True, timeout=60, verify_ssl_cert=True)
|
||||
#### Database(db_name, db_url="http://localhost:8123/", username=None, password=None, readonly=False, autocreate=True, timeout=60, verify_ssl_cert=True, log_statements=False)
|
||||
|
||||
|
||||
Initializes a database instance. Unless it's readonly, the database will be
|
||||
|
|
@ -24,6 +24,7 @@ created on the ClickHouse server if it does not already exist.
|
|||
- `autocreate`: automatically create the database if it does not exist (unless in readonly mode).
|
||||
- `timeout`: the connection timeout in seconds.
|
||||
- `verify_ssl_cert`: whether to verify the server's certificate when connecting via HTTPS.
|
||||
- `log_statements`: when True, all database statements are logged.
|
||||
|
||||
|
||||
#### add_setting(name, value)
|
||||
|
|
@ -510,7 +511,7 @@ infi.clickhouse_orm.fields
|
|||
|
||||
Extends Field
|
||||
|
||||
#### ArrayField(inner_field, default=None, alias=None, materialized=None, readonly=None)
|
||||
#### ArrayField(inner_field, default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### BaseEnumField
|
||||
|
|
@ -520,7 +521,7 @@ Extends Field
|
|||
|
||||
Abstract base class for all enum-type fields.
|
||||
|
||||
#### BaseEnumField(enum_cls, default=None, alias=None, materialized=None, readonly=None)
|
||||
#### BaseEnumField(enum_cls, default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### BaseFloatField
|
||||
|
|
@ -530,7 +531,7 @@ Extends Field
|
|||
|
||||
Abstract base class for all float-type fields.
|
||||
|
||||
#### BaseFloatField(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### BaseFloatField(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### BaseIntField
|
||||
|
|
@ -540,21 +541,21 @@ Extends Field
|
|||
|
||||
Abstract base class for all integer-type fields.
|
||||
|
||||
#### BaseIntField(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### BaseIntField(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### DateField
|
||||
|
||||
Extends Field
|
||||
|
||||
#### DateField(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### DateField(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### DateTimeField
|
||||
|
||||
Extends Field
|
||||
|
||||
#### DateTimeField(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### DateTimeField(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### Decimal128Field
|
||||
|
|
@ -592,14 +593,14 @@ Base class for all decimal fields. Can also be used directly.
|
|||
|
||||
Extends BaseEnumField
|
||||
|
||||
#### Enum16Field(enum_cls, default=None, alias=None, materialized=None, readonly=None)
|
||||
#### Enum16Field(enum_cls, default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### Enum8Field
|
||||
|
||||
Extends BaseEnumField
|
||||
|
||||
#### Enum8Field(enum_cls, default=None, alias=None, materialized=None, readonly=None)
|
||||
#### Enum8Field(enum_cls, default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### Field
|
||||
|
|
@ -607,7 +608,7 @@ Extends BaseEnumField
|
|||
|
||||
Abstract base class for all field types.
|
||||
|
||||
#### Field(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### Field(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### FixedStringField
|
||||
|
|
@ -621,84 +622,98 @@ Extends StringField
|
|||
|
||||
Extends BaseFloatField
|
||||
|
||||
#### Float32Field(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### Float32Field(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### Float64Field
|
||||
|
||||
Extends BaseFloatField
|
||||
|
||||
#### Float64Field(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### Float64Field(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### Int16Field
|
||||
|
||||
Extends BaseIntField
|
||||
|
||||
#### Int16Field(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### Int16Field(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### Int32Field
|
||||
|
||||
Extends BaseIntField
|
||||
|
||||
#### Int32Field(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### Int32Field(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### Int64Field
|
||||
|
||||
Extends BaseIntField
|
||||
|
||||
#### Int64Field(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### Int64Field(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### Int8Field
|
||||
|
||||
Extends BaseIntField
|
||||
|
||||
#### Int8Field(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### Int8Field(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### LowCardinalityField
|
||||
|
||||
Extends Field
|
||||
|
||||
#### LowCardinalityField(inner_field, default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### NullableField
|
||||
|
||||
Extends Field
|
||||
|
||||
#### NullableField(inner_field, default=None, alias=None, materialized=None, extra_null_values=None)
|
||||
#### NullableField(inner_field, default=None, alias=None, materialized=None, extra_null_values=None, codec=None)
|
||||
|
||||
|
||||
### StringField
|
||||
|
||||
Extends Field
|
||||
|
||||
#### StringField(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### StringField(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### UInt16Field
|
||||
|
||||
Extends BaseIntField
|
||||
|
||||
#### UInt16Field(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### UInt16Field(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### UInt32Field
|
||||
|
||||
Extends BaseIntField
|
||||
|
||||
#### UInt32Field(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### UInt32Field(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### UInt64Field
|
||||
|
||||
Extends BaseIntField
|
||||
|
||||
#### UInt64Field(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### UInt64Field(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### UInt8Field
|
||||
|
||||
Extends BaseIntField
|
||||
|
||||
#### UInt8Field(default=None, alias=None, materialized=None, readonly=None)
|
||||
#### UInt8Field(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
### UUIDField
|
||||
|
||||
Extends Field
|
||||
|
||||
#### UUIDField(default=None, alias=None, materialized=None, readonly=None, codec=None)
|
||||
|
||||
|
||||
infi.clickhouse_orm.engines
|
||||
|
|
@ -835,10 +850,10 @@ is equivalent to:
|
|||
Returns the whole query as a SQL string.
|
||||
|
||||
|
||||
#### conditions_as_sql()
|
||||
#### conditions_as_sql(prewhere=False)
|
||||
|
||||
|
||||
Returns the contents of the query's `WHERE` clause as a string.
|
||||
Returns the contents of the query's `WHERE` or `PREWHERE` clause as a string.
|
||||
|
||||
|
||||
#### count()
|
||||
|
|
@ -854,17 +869,18 @@ Adds a DISTINCT clause to the query, meaning that any duplicate rows
|
|||
in the results will be omitted.
|
||||
|
||||
|
||||
#### exclude(**filter_fields)
|
||||
#### exclude(*q, **kwargs)
|
||||
|
||||
|
||||
Returns a copy of this queryset that excludes all rows matching the conditions.
|
||||
Pass `prewhere=True` to apply the conditions as PREWHERE instead of WHERE.
|
||||
|
||||
|
||||
#### filter(*q, **filter_fields)
|
||||
#### filter(*q, **kwargs)
|
||||
|
||||
|
||||
Returns a copy of this queryset that includes only rows matching the conditions.
|
||||
Add q object to query if it specified.
|
||||
Pass `prewhere=True` to apply the conditions as PREWHERE instead of WHERE.
|
||||
|
||||
|
||||
#### final()
|
||||
|
|
@ -908,6 +924,12 @@ The result is a namedtuple containing `objects` (list), `number_of_objects`,
|
|||
`pages_total`, `number` (of the current page), and `page_size`.
|
||||
|
||||
|
||||
#### select_fields_as_sql()
|
||||
|
||||
|
||||
Returns the selected fields or expressions as a SQL string.
|
||||
|
||||
|
||||
### AggregateQuerySet
|
||||
|
||||
Extends QuerySet
|
||||
|
|
@ -943,10 +965,10 @@ This method is not supported on `AggregateQuerySet`.
|
|||
Returns the whole query as a SQL string.
|
||||
|
||||
|
||||
#### conditions_as_sql()
|
||||
#### conditions_as_sql(prewhere=False)
|
||||
|
||||
|
||||
Returns the contents of the query's `WHERE` clause as a string.
|
||||
Returns the contents of the query's `WHERE` or `PREWHERE` clause as a string.
|
||||
|
||||
|
||||
#### count()
|
||||
|
|
@ -962,17 +984,18 @@ Adds a DISTINCT clause to the query, meaning that any duplicate rows
|
|||
in the results will be omitted.
|
||||
|
||||
|
||||
#### exclude(**filter_fields)
|
||||
#### exclude(*q, **kwargs)
|
||||
|
||||
|
||||
Returns a copy of this queryset that excludes all rows matching the conditions.
|
||||
Pass `prewhere=True` to apply the conditions as PREWHERE instead of WHERE.
|
||||
|
||||
|
||||
#### filter(*q, **filter_fields)
|
||||
#### filter(*q, **kwargs)
|
||||
|
||||
|
||||
Returns a copy of this queryset that includes only rows matching the conditions.
|
||||
Add q object to query if it specified.
|
||||
Pass `prewhere=True` to apply the conditions as PREWHERE instead of WHERE.
|
||||
|
||||
|
||||
#### final()
|
||||
|
|
@ -1022,3 +1045,17 @@ The result is a namedtuple containing `objects` (list), `number_of_objects`,
|
|||
`pages_total`, `number` (of the current page), and `page_size`.
|
||||
|
||||
|
||||
#### select_fields_as_sql()
|
||||
|
||||
|
||||
Returns the selected fields or expressions as a SQL string.
|
||||
|
||||
|
||||
#### with_totals()
|
||||
|
||||
|
||||
Adds WITH TOTALS modifier ot GROUP BY, making query return extra row
|
||||
with aggregate function calculated across all the rows. More information:
|
||||
https://clickhouse.yandex/docs/en/query_language/select/#with-totals-modifier
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -9,7 +9,7 @@ Currently the following field types are supported:
|
|||
| ------------------ | ---------- | ------------------- | -----------------------------------------------------
|
||||
| StringField | String | unicode | Encoded as UTF-8 when written to ClickHouse
|
||||
| FixedStringField | String | unicode | Encoded as UTF-8 when written to ClickHouse
|
||||
| DateField | Date | datetime.date | Range 1970-01-01 to 2038-01-19
|
||||
| DateField | Date | datetime.date | Range 1970-01-01 to 2105-12-31
|
||||
| DateTimeField | DateTime | datetime.datetime | Minimal value is 1970-01-01 00:00:00; Always in UTC
|
||||
| Int8Field | Int8 | int | Range -128 to 127
|
||||
| Int16Field | Int16 | int | Range -32768 to 32767
|
||||
|
|
@ -25,6 +25,7 @@ Currently the following field types are supported:
|
|||
| Decimal32Field | Decimal32 | Decimal | Ditto
|
||||
| Decimal64Field | Decimal64 | Decimal | Ditto
|
||||
| Decimal128Field | Decimal128 | Decimal | Ditto
|
||||
| UUIDField | UUID | Decimal |
|
||||
| Enum8Field | Enum8 | Enum | See below
|
||||
| Enum16Field | Enum16 | Enum | See below
|
||||
| ArrayField | Array | list | See below
|
||||
|
|
@ -120,8 +121,7 @@ db.select('SELECT * FROM $db.event', model_class=Event)
|
|||
|
||||
Working with nullable fields
|
||||
----------------------------
|
||||
From [some time](https://github.com/yandex/ClickHouse/pull/70) ClickHouse provides a NULL value support.
|
||||
Also see some information [here](https://github.com/yandex/ClickHouse/blob/master/dbms/tests/queries/0_stateless/00395_nullable.sql).
|
||||
[ClickHouse provides a NULL value support](https://clickhouse.yandex/docs/en/data_types/nullable).
|
||||
|
||||
Wrapping another field in a `NullableField` makes it possible to assign `None` to that field. For example:
|
||||
|
||||
|
|
@ -147,6 +147,79 @@ to `None`.
|
|||
|
||||
NOTE: `ArrayField` of `NullableField` is not supported. Also `EnumField` cannot be nullable.
|
||||
|
||||
NOTE: Using `Nullable` almost always negatively affects performance, keep this in mind when designing your databases.
|
||||
|
||||
Working with field compression codecs
|
||||
-------------------------------------
|
||||
Besides default data compression, defined in server settings, per-field specification is also available.
|
||||
|
||||
Supported compression algorithms:
|
||||
|
||||
| Codec | Argument | Comment
|
||||
| -------------------- | -------------------------------------------| ----------------------------------------------------
|
||||
| NONE | None | No compression.
|
||||
| LZ4 | None | LZ4 compression.
|
||||
| LZ4HC(`level`) | Possible `level` range: [3, 12]. | Default value: 9. Greater values stands for better compression and higher CPU usage. Recommended value range: [4,9].
|
||||
| ZSTD(`level`) | Possible `level`range: [1, 22]. | Default value: 1. Greater values stands for better compression and higher CPU usage. Levels >= 20, should be used with caution, as they require more memory.
|
||||
| Delta(`delta_bytes`) | Possible `delta_bytes` range: 1, 2, 4 , 8. | Default value for `delta_bytes` is `sizeof(type)` if it is equal to 1, 2,4 or 8 and equals to 1 otherwise.
|
||||
|
||||
Codecs can be combined in a pipeline. Default table codec is not included into pipeline (if it should be applied to a field, you have to specify it explicitly in pipeline).
|
||||
|
||||
Recommended usage for codecs:
|
||||
- Usually, values for particular metric, stored in path does not differ significantly from point to point. Using delta-encoding allows to reduce disk space usage significantly.
|
||||
- DateTime works great with pipeline of Delta, ZSTD and the column size can be compressed to 2-3% of its original size (given a smooth datetime data)
|
||||
- Numeric types usually enjoy best compression rates with ZSTD
|
||||
- String types enjoy good compression rates with LZ4HC
|
||||
|
||||
Usage:
|
||||
```python
|
||||
class Stats(models.Model):
|
||||
|
||||
id = fields.UInt64Field(codec='ZSTD(10)')
|
||||
timestamp = fields.DateTimeField(codec='Delta,ZSTD')
|
||||
timestamp_date = fields.DateField(codec='Delta(4),ZSTD(22)')
|
||||
metadata_id = fields.Int64Field(codec='LZ4')
|
||||
status = fields.StringField(codec='LZ4HC(10)')
|
||||
calculation = fields.NullableField(fields.Float32Field(), codec='ZSTD')
|
||||
alerts = fields.ArrayField(fields.FixedStringField(length=15), codec='Delta(2),LZ4HC')
|
||||
|
||||
engine = MergeTree('timestamp_date', ('id', 'timestamp'))
|
||||
|
||||
```
|
||||
|
||||
Note: This feature is supported on ClickHouse version 19.1.16 and above. Codec arguments will be ignored by the ORM for older versions of ClickHouse.
|
||||
|
||||
Working with LowCardinality fields
|
||||
----------------------------------
|
||||
Starting with version 19.0 ClickHouse offers a new type of field to improve the performance of queries
|
||||
and compaction of columns for low entropy data.
|
||||
|
||||
[More specifically](https://github.com/yandex/ClickHouse/issues/4074) LowCardinality data type builds dictionaries automatically. It can use multiple different dictionaries if necessarily.
|
||||
If the number of distinct values is pretty large, the dictionaries become local, several different dictionaries will be used for different ranges of data. For example, if you have too many distinct values in total, but only less than about a million values each day - then the queries by day will be processed efficiently, and queries for larger ranges will be processed rather efficiently.
|
||||
|
||||
LowCardinality works independently of (generic) fields compression.
|
||||
LowCardinality fields are subsequently compressed as usual.
|
||||
The compression ratios of LowCardinality fields for text data may be significantly better than without LowCardinality.
|
||||
|
||||
LowCardinality will give performance boost, in the form of processing speed, if the number of distinct values is less than a few millions. This is because data is processed in dictionary encoded form.
|
||||
|
||||
You can find further information about LowCardinality in [this presentation](https://github.com/yandex/clickhouse-presentations/blob/master/meetup19/string_optimization.pdf).
|
||||
|
||||
Usage example:
|
||||
```python
|
||||
class LowCardinalityModel(models.Model):
|
||||
date = fields.DateField()
|
||||
int32 = fields.LowCardinalityField(fields.Int32Field())
|
||||
float32 = fields.LowCardinalityField(fields.Float32Field())
|
||||
string = fields.LowCardinalityField(fields.StringField())
|
||||
nullable = fields.LowCardinalityField(fields.NullableField(fields.StringField()))
|
||||
array = fields.ArrayField(fields.LowCardinalityField(fields.UInt64Field()))
|
||||
|
||||
engine = MergeTree('date', ('date',))
|
||||
```
|
||||
|
||||
Note: `LowCardinality` field with an inner array field is not supported. Use an `ArrayField` with a `LowCardinality` inner field as seen in the example.
|
||||
|
||||
Creating custom field types
|
||||
---------------------------
|
||||
Sometimes it is convenient to use data types that are supported in Python, but have no corresponding column type in ClickHouse. In these cases it is possible to define a custom field class that knows how to convert the Pythonic object to a suitable representation in the database, and vice versa.
|
||||
|
|
@ -183,46 +256,6 @@ class BooleanField(Field):
|
|||
return '1' if value else '0'
|
||||
```
|
||||
|
||||
Here's another example - a field for storing UUIDs in the database as 16-byte strings. We'll use Python's built-in `UUID` class to handle the conversion from strings, ints and tuples into UUID instances. So in our Python code we'll have the convenience of working with UUID objects, but they will be stored in the database as efficiently as possible:
|
||||
|
||||
```python
|
||||
from infi.clickhouse_orm.fields import Field
|
||||
from infi.clickhouse_orm.utils import escape
|
||||
from uuid import UUID
|
||||
import six
|
||||
|
||||
class UUIDField(Field):
|
||||
|
||||
# The ClickHouse column type to use
|
||||
db_type = 'FixedString(16)'
|
||||
|
||||
# The default value if empty
|
||||
class_default = UUID(int=0)
|
||||
|
||||
def to_python(self, value, timezone_in_use):
|
||||
# Convert valid values to UUID instance
|
||||
if isinstance(value, UUID):
|
||||
return value
|
||||
elif isinstance(value, six.string_types):
|
||||
return UUID(bytes=value.encode('latin1')) if len(value) == 16 else UUID(value)
|
||||
elif isinstance(value, six.integer_types):
|
||||
return UUID(int=value)
|
||||
elif isinstance(value, tuple):
|
||||
return UUID(fields=value)
|
||||
else:
|
||||
raise ValueError('Invalid value for UUIDField: %r' % value)
|
||||
|
||||
def to_db_string(self, value, quote=True):
|
||||
# The value was already converted by to_python, so it's a UUID instance
|
||||
val = value.bytes
|
||||
if six.PY3:
|
||||
val = str(val, 'latin1')
|
||||
return escape(val, quote)
|
||||
|
||||
```
|
||||
|
||||
Note that the latin-1 encoding is used as an identity encoding for converting between raw bytes and strings. This is required in Python 3, where `str` and `bytes` are different types.
|
||||
|
||||
---
|
||||
|
||||
[<< Querysets](querysets.md) | [Table of Contents](toc.md) | [Table Engines >>](table_engines.md)
|
||||
|
|
@ -89,7 +89,7 @@ When values are assigned to model fields, they are immediately converted to thei
|
|||
>>> suzy.birthday = 0.5
|
||||
ValueError: Invalid value for DateField - 0.5
|
||||
>>> suzy.birthday = '1922-05-31'
|
||||
ValueError: DateField out of range - 1922-05-31 is not between 1970-01-01 and 2038-01-19
|
||||
ValueError: DateField out of range - 1922-05-31 is not between 1970-01-01 and 2105-12-31
|
||||
|
||||
Inserting to the Database
|
||||
-------------------------
|
||||
|
|
|
|||
|
|
@ -32,6 +32,14 @@ For filters with compound conditions you can use `Q` objects inside `filter` wit
|
|||
>>> qs.conditions_as_sql()
|
||||
u"((first_name = 'Ciaran' AND last_name = 'Carver') OR height <= 1.8) AND (NOT (first_name = 'David'))"
|
||||
|
||||
By default conditions from `filter` and `exclude` methods are add to `WHERE` clause.
|
||||
For better aggregation performance you can add them to `PREWHERE` section using `prewhere=True` parameter
|
||||
|
||||
>>> qs = Person.objects_in(database)
|
||||
>>> qs = qs.filter(first_name__startswith='V', prewhere=True)
|
||||
>>> qs.conditions_as_sql(prewhere=True)
|
||||
u"first_name LIKE 'V%'"
|
||||
|
||||
There are different operators that can be used, by passing `<fieldname>__<operator>=<value>` (two underscores separate the field name from the operator). In case no operator is given, `eq` is used by default. Below are all the supported operators.
|
||||
|
||||
| Operator | Equivalent SQL | Comments |
|
||||
|
|
@ -202,6 +210,19 @@ This queryset is translated to:
|
|||
|
||||
After calling `aggregate` you can still use most of the regular queryset methods, such as `count`, `order_by` and `paginate`. It is not possible, however, to call `only` or `aggregate`. It is also not possible to filter the queryset on calculated fields, only on fields that exist in the model.
|
||||
|
||||
If you limit aggregation results, it might be useful to get total aggregation values for all rows.
|
||||
To achieve this, you can use `with_totals` method. It will return extra row (last) with
|
||||
values aggregated for all rows suitable for filters.
|
||||
|
||||
qs = Person.objects_in(database).aggregate('first_name', num='count()').with_totals().order_by('-count')[:3]
|
||||
>>> print qs.count()
|
||||
4
|
||||
>>> for row in qs:
|
||||
>>> print("'{}': {}".format(row.first_name, row.count))
|
||||
'Cassandra': 2
|
||||
'Alexandra': 2
|
||||
'': 100
|
||||
|
||||
---
|
||||
|
||||
[<< Models and Databases](models_and_databases.md) | [Table of Contents](toc.md) | [Field Types >>](field_types.md)
|
||||
|
|
@ -482,9 +482,9 @@ infi.clickhouse_orm.query
|
|||
#### QuerySet(model_cls, database)
|
||||
|
||||
|
||||
#### conditions_as_sql()
|
||||
#### conditions_as_sql(prewhere=True)
|
||||
|
||||
Return the contents of the queryset's WHERE clause.
|
||||
Return the contents of the queryset's WHERE or `PREWHERE` clause.
|
||||
|
||||
|
||||
#### count()
|
||||
|
|
|
|||
|
|
@ -36,6 +36,8 @@
|
|||
* [Working with array fields](field_types.md#working-with-array-fields)
|
||||
* [Working with materialized and alias fields](field_types.md#working-with-materialized-and-alias-fields)
|
||||
* [Working with nullable fields](field_types.md#working-with-nullable-fields)
|
||||
* [Working with field compression codecs](field_types.md#working-with-field-compression-codecs)
|
||||
* [Working with LowCardinality fields](field_types.md#working-with-lowcardinality-fields)
|
||||
* [Creating custom field types](field_types.md#creating-custom-field-types)
|
||||
|
||||
* [Table Engines](table_engines.md#table-engines)
|
||||
|
|
@ -86,12 +88,14 @@
|
|||
* [Int32Field](class_reference.md#int32field)
|
||||
* [Int64Field](class_reference.md#int64field)
|
||||
* [Int8Field](class_reference.md#int8field)
|
||||
* [LowCardinalityField](class_reference.md#lowcardinalityfield)
|
||||
* [NullableField](class_reference.md#nullablefield)
|
||||
* [StringField](class_reference.md#stringfield)
|
||||
* [UInt16Field](class_reference.md#uint16field)
|
||||
* [UInt32Field](class_reference.md#uint32field)
|
||||
* [UInt64Field](class_reference.md#uint64field)
|
||||
* [UInt8Field](class_reference.md#uint8field)
|
||||
* [UUIDField](class_reference.md#uuidfield)
|
||||
* [infi.clickhouse_orm.engines](class_reference.md#infi.clickhouse_orm.engines)
|
||||
* [Engine](class_reference.md#engine)
|
||||
* [TinyLog](class_reference.md#tinylog)
|
||||
|
|
|
|||
|
|
@ -40,11 +40,19 @@ class ServerError(DatabaseException):
|
|||
self.message = message
|
||||
super(ServerError, self).__init__(message)
|
||||
|
||||
ERROR_PATTERN = re.compile(r'''
|
||||
Code:\ (?P<code>\d+),
|
||||
\ e\.displayText\(\)\ =\ (?P<type1>[^ \n]+):\ (?P<msg>.+?),
|
||||
\ e.what\(\)\ =\ (?P<type2>[^ \n]+)
|
||||
''', re.VERBOSE | re.DOTALL)
|
||||
ERROR_PATTERNS = (
|
||||
# ClickHouse prior to v19.3.3
|
||||
re.compile(r'''
|
||||
Code:\ (?P<code>\d+),
|
||||
\ e\.displayText\(\)\ =\ (?P<type1>[^ \n]+):\ (?P<msg>.+?),
|
||||
\ e.what\(\)\ =\ (?P<type2>[^ \n]+)
|
||||
''', re.VERBOSE | re.DOTALL),
|
||||
# ClickHouse v19.3.3+
|
||||
re.compile(r'''
|
||||
Code:\ (?P<code>\d+),
|
||||
\ e\.displayText\(\)\ =\ (?P<type1>[^ \n]+):\ (?P<msg>.+)
|
||||
''', re.VERBOSE | re.DOTALL),
|
||||
)
|
||||
|
||||
@classmethod
|
||||
def get_error_code_msg(cls, full_error_message):
|
||||
|
|
@ -54,10 +62,11 @@ class ServerError(DatabaseException):
|
|||
See the list of error codes here:
|
||||
https://github.com/yandex/ClickHouse/blob/master/dbms/src/Common/ErrorCodes.cpp
|
||||
"""
|
||||
match = cls.ERROR_PATTERN.match(full_error_message)
|
||||
if match:
|
||||
# assert match.group('type1') == match.group('type2')
|
||||
return int(match.group('code')), match.group('msg')
|
||||
for pattern in cls.ERROR_PATTERNS:
|
||||
match = pattern.match(full_error_message)
|
||||
if match:
|
||||
# assert match.group('type1') == match.group('type2')
|
||||
return int(match.group('code')), match.group('msg').strip()
|
||||
|
||||
return 0, full_error_message
|
||||
|
||||
|
|
@ -74,7 +83,7 @@ class Database(object):
|
|||
|
||||
def __init__(self, db_name, db_url='http://localhost:8123/',
|
||||
username=None, password=None, readonly=False, autocreate=True,
|
||||
timeout=60, verify_ssl_cert=True):
|
||||
timeout=60, verify_ssl_cert=True, log_statements=False):
|
||||
'''
|
||||
Initializes a database instance. Unless it's readonly, the database will be
|
||||
created on the ClickHouse server if it does not already exist.
|
||||
|
|
@ -87,15 +96,17 @@ class Database(object):
|
|||
- `autocreate`: automatically create the database if it does not exist (unless in readonly mode).
|
||||
- `timeout`: the connection timeout in seconds.
|
||||
- `verify_ssl_cert`: whether to verify the server's certificate when connecting via HTTPS.
|
||||
- `log_statements`: when True, all database statements are logged.
|
||||
'''
|
||||
self.db_name = db_name
|
||||
self.db_url = db_url
|
||||
self.username = username
|
||||
self.password = password
|
||||
self.readonly = False
|
||||
self.timeout = timeout
|
||||
self.request_session = requests.Session()
|
||||
self.request_session.verify = verify_ssl_cert
|
||||
if username:
|
||||
self.request_session.auth = (username, password or '')
|
||||
self.log_statements = log_statements
|
||||
self.settings = {}
|
||||
self.db_exists = False # this is required before running _is_existing_database
|
||||
self.db_exists = self._is_existing_database()
|
||||
|
|
@ -109,6 +120,10 @@ class Database(object):
|
|||
self.server_version = self._get_server_version()
|
||||
# Versions 1.1.53981 and below don't have timezone function
|
||||
self.server_timezone = self._get_server_timezone() if self.server_version > (1, 1, 53981) else pytz.utc
|
||||
# Versions 19.1.16 and above support codec compression
|
||||
self.has_codec_support = self.server_version >= (19, 1, 16)
|
||||
# Version 19.0 and above support LowCardinality
|
||||
self.has_low_cardinality_support = self.server_version >= (19, 0)
|
||||
|
||||
def create_database(self):
|
||||
'''
|
||||
|
|
@ -276,7 +291,7 @@ class Database(object):
|
|||
count = self.count(model_class, conditions)
|
||||
pages_total = int(ceil(count / float(page_size)))
|
||||
if page_num == -1:
|
||||
page_num = pages_total
|
||||
page_num = max(pages_total, 1)
|
||||
elif page_num < 1:
|
||||
raise ValueError('Invalid page number: %d' % page_num)
|
||||
offset = (page_num - 1) * page_size
|
||||
|
|
@ -287,7 +302,7 @@ class Database(object):
|
|||
query += ' LIMIT %d, %d' % (offset, page_size)
|
||||
query = self._substitute(query, model_class)
|
||||
return Page(
|
||||
objects=list(self.select(query, model_class, settings)),
|
||||
objects=list(self.select(query, model_class, settings)) if count else [],
|
||||
number_of_objects=count,
|
||||
pages_total=pages_total,
|
||||
number=page_num,
|
||||
|
|
@ -325,6 +340,8 @@ class Database(object):
|
|||
def _send(self, data, settings=None, stream=False):
|
||||
if isinstance(data, string_types):
|
||||
data = data.encode('utf-8')
|
||||
if self.log_statements:
|
||||
logger.info(data)
|
||||
params = self._build_params(settings)
|
||||
r = self.request_session.post(self.db_url, params=params, data=data, stream=stream, timeout=self.timeout)
|
||||
if r.status_code != 200:
|
||||
|
|
@ -336,10 +353,6 @@ class Database(object):
|
|||
params.update(self.settings)
|
||||
if self.db_exists:
|
||||
params['database'] = self.db_name
|
||||
if self.username:
|
||||
params['user'] = self.username
|
||||
if self.password:
|
||||
params['password'] = self.password
|
||||
# Send the readonly flag, unless the connection is already readonly (to prevent db error)
|
||||
if self.readonly and not self.connection_readonly:
|
||||
params['readonly'] = '1'
|
||||
|
|
@ -352,7 +365,10 @@ class Database(object):
|
|||
if '$' in query:
|
||||
mapping = dict(db="`%s`" % self.db_name)
|
||||
if model_class:
|
||||
mapping['table'] = "`%s`.`%s`" % (self.db_name, model_class.table_name())
|
||||
if model_class.is_system_model():
|
||||
mapping['table'] = model_class.table_name()
|
||||
else:
|
||||
mapping['table'] = "`%s`.`%s`" % (self.db_name, model_class.table_name())
|
||||
query = Template(query).safe_substitute(mapping)
|
||||
return query
|
||||
|
||||
|
|
|
|||
|
|
@ -40,7 +40,7 @@ class MergeTree(Engine):
|
|||
assert date_col is None or isinstance(date_col, six.string_types), 'date_col must be string if present'
|
||||
assert partition_key is None or type(partition_key) in (list, tuple),\
|
||||
'partition_key must be tuple or list if present'
|
||||
assert (replica_table_path is None) == (replica_name == None), \
|
||||
assert (replica_table_path is None) == (replica_name is None), \
|
||||
'both replica_table_path and replica_name must be specified'
|
||||
|
||||
# These values conflict with each other (old and new syntax of table engines.
|
||||
|
|
|
|||
|
|
@ -1,15 +1,16 @@
|
|||
from __future__ import unicode_literals
|
||||
from six import string_types, text_type, binary_type
|
||||
from six import string_types, text_type, binary_type, integer_types
|
||||
import datetime
|
||||
import iso8601
|
||||
import pytz
|
||||
import time
|
||||
from calendar import timegm
|
||||
from decimal import Decimal, localcontext
|
||||
|
||||
from uuid import UUID
|
||||
from logging import getLogger
|
||||
from .utils import escape, parse_array, comma_join
|
||||
from .funcs import F, FunctionOperatorsMixin
|
||||
|
||||
logger = getLogger('clickhouse_orm')
|
||||
|
||||
class Field(FunctionOperatorsMixin):
|
||||
'''
|
||||
|
|
@ -21,14 +22,16 @@ class Field(FunctionOperatorsMixin):
|
|||
class_default = 0 # should be overridden by concrete subclasses
|
||||
db_type = None # should be overridden by concrete subclasses
|
||||
|
||||
def __init__(self, default=None, alias=None, materialized=None, readonly=None):
|
||||
def __init__(self, default=None, alias=None, materialized=None, readonly=None, codec=None):
|
||||
assert (None, None) in {(default, alias), (alias, materialized), (default, materialized)}, \
|
||||
"Only one of default, alias and materialized parameters can be given"
|
||||
assert alias is None or isinstance(alias, string_types) and alias != "",\
|
||||
"Alias field must be string field name, if given"
|
||||
assert materialized is None or isinstance(materialized, string_types) and alias != "",\
|
||||
"Alias field must be a string, if given"
|
||||
assert materialized is None or isinstance(materialized, string_types) and materialized != "",\
|
||||
"Materialized field must be string, if given"
|
||||
assert readonly is None or type(readonly) is bool, "readonly parameter must be bool if given"
|
||||
assert codec is None or isinstance(codec, string_types) and codec != "", \
|
||||
"Codec field must be string, if given"
|
||||
|
||||
self.creation_counter = Field.creation_counter
|
||||
Field.creation_counter += 1
|
||||
|
|
@ -36,6 +39,7 @@ class Field(FunctionOperatorsMixin):
|
|||
self.alias = alias
|
||||
self.materialized = materialized
|
||||
self.readonly = bool(self.alias or self.materialized or readonly)
|
||||
self.codec = codec
|
||||
|
||||
def to_python(self, value, timezone_in_use):
|
||||
'''
|
||||
|
|
@ -66,22 +70,30 @@ class Field(FunctionOperatorsMixin):
|
|||
'''
|
||||
return escape(value, quote)
|
||||
|
||||
def get_sql(self, with_default_expression=True):
|
||||
def get_sql(self, with_default_expression=True, db=None):
|
||||
'''
|
||||
Returns an SQL expression describing the field (e.g. for CREATE TABLE).
|
||||
:param with_default_expression: If True, adds default value to sql.
|
||||
It doesn't affect fields with alias and materialized values.
|
||||
:param db: Database, used for checking supported features.
|
||||
'''
|
||||
sql = self.db_type
|
||||
if with_default_expression:
|
||||
if self.alias:
|
||||
return '%s ALIAS %s' % (self.db_type, self.alias)
|
||||
elif self.materialized:
|
||||
return '%s MATERIALIZED %s' % (self.db_type, self.materialized)
|
||||
else:
|
||||
default = self.to_db_string(self.default)
|
||||
return '%s DEFAULT %s' % (self.db_type, default)
|
||||
else:
|
||||
return self.db_type
|
||||
sql += self._extra_params(db)
|
||||
return sql
|
||||
|
||||
def _extra_params(self, db):
|
||||
sql = ''
|
||||
if self.alias:
|
||||
sql += ' ALIAS %s' % self.alias
|
||||
elif self.materialized:
|
||||
sql += ' MATERIALIZED %s' % self.materialized
|
||||
elif self.default:
|
||||
default = self.to_db_string(self.default)
|
||||
sql += ' DEFAULT %s' % default
|
||||
if self.codec and db and db.has_codec_support:
|
||||
sql += ' CODEC(%s)' % self.codec
|
||||
return sql
|
||||
|
||||
def isinstance(self, types):
|
||||
"""
|
||||
|
|
@ -154,7 +166,7 @@ class FixedStringField(StringField):
|
|||
class DateField(Field):
|
||||
|
||||
min_value = datetime.date(1970, 1, 1)
|
||||
max_value = datetime.date(2038, 1, 19)
|
||||
max_value = datetime.date(2105, 12, 31)
|
||||
class_default = min_value
|
||||
db_type = 'Date'
|
||||
|
||||
|
|
@ -383,11 +395,11 @@ class BaseEnumField(Field):
|
|||
Abstract base class for all enum-type fields.
|
||||
'''
|
||||
|
||||
def __init__(self, enum_cls, default=None, alias=None, materialized=None, readonly=None):
|
||||
def __init__(self, enum_cls, default=None, alias=None, materialized=None, readonly=None, codec=None):
|
||||
self.enum_cls = enum_cls
|
||||
if default is None:
|
||||
default = list(enum_cls)[0]
|
||||
super(BaseEnumField, self).__init__(default, alias, materialized, readonly)
|
||||
super(BaseEnumField, self).__init__(default, alias, materialized, readonly, codec)
|
||||
|
||||
def to_python(self, value, timezone_in_use):
|
||||
if isinstance(value, self.enum_cls):
|
||||
|
|
@ -406,12 +418,14 @@ class BaseEnumField(Field):
|
|||
def to_db_string(self, value, quote=True):
|
||||
return escape(value.name, quote)
|
||||
|
||||
def get_sql(self, with_default_expression=True):
|
||||
def get_sql(self, with_default_expression=True, db=None):
|
||||
values = ['%s = %d' % (escape(item.name), item.value) for item in self.enum_cls]
|
||||
sql = '%s(%s)' % (self.db_type, ' ,'.join(values))
|
||||
if with_default_expression:
|
||||
default = self.to_db_string(self.default)
|
||||
sql = '%s DEFAULT %s' % (sql, default)
|
||||
if self.codec and db and db.has_codec_support:
|
||||
sql+= ' CODEC(%s)' % self.codec
|
||||
return sql
|
||||
|
||||
@classmethod
|
||||
|
|
@ -421,10 +435,7 @@ class BaseEnumField(Field):
|
|||
this method returns a matching enum field.
|
||||
'''
|
||||
import re
|
||||
try:
|
||||
Enum # exists in Python 3.4+
|
||||
except NameError:
|
||||
from enum import Enum # use the enum34 library instead
|
||||
from enum import Enum
|
||||
members = {}
|
||||
for match in re.finditer("'(\w+)' = (\d+)", db_type):
|
||||
members[match.group(1)] = int(match.group(2))
|
||||
|
|
@ -447,11 +458,11 @@ class ArrayField(Field):
|
|||
|
||||
class_default = []
|
||||
|
||||
def __init__(self, inner_field, default=None, alias=None, materialized=None, readonly=None):
|
||||
def __init__(self, inner_field, default=None, alias=None, materialized=None, readonly=None, codec=None):
|
||||
assert isinstance(inner_field, Field), "The first argument of ArrayField must be a Field instance"
|
||||
assert not isinstance(inner_field, ArrayField), "Multidimensional array fields are not supported by the ORM"
|
||||
self.inner_field = inner_field
|
||||
super(ArrayField, self).__init__(default, alias, materialized, readonly)
|
||||
super(ArrayField, self).__init__(default, alias, materialized, readonly, codec)
|
||||
|
||||
def to_python(self, value, timezone_in_use):
|
||||
if isinstance(value, text_type):
|
||||
|
|
@ -470,9 +481,34 @@ class ArrayField(Field):
|
|||
array = [self.inner_field.to_db_string(v, quote=True) for v in value]
|
||||
return '[' + comma_join(array) + ']'
|
||||
|
||||
def get_sql(self, with_default_expression=True):
|
||||
from .utils import escape
|
||||
return 'Array(%s)' % self.inner_field.get_sql(with_default_expression=False)
|
||||
def get_sql(self, with_default_expression=True, db=None):
|
||||
sql = 'Array(%s)' % self.inner_field.get_sql(with_default_expression=False, db=db)
|
||||
if with_default_expression and self.codec and db and db.has_codec_support:
|
||||
sql+= ' CODEC(%s)' % self.codec
|
||||
return sql
|
||||
|
||||
|
||||
class UUIDField(Field):
|
||||
|
||||
class_default = UUID(int=0)
|
||||
db_type = 'UUID'
|
||||
|
||||
def to_python(self, value, timezone_in_use):
|
||||
if isinstance(value, UUID):
|
||||
return value
|
||||
elif isinstance(value, binary_type):
|
||||
return UUID(bytes=value)
|
||||
elif isinstance(value, string_types):
|
||||
return UUID(value)
|
||||
elif isinstance(value, integer_types):
|
||||
return UUID(int=value)
|
||||
elif isinstance(value, tuple):
|
||||
return UUID(fields=value)
|
||||
else:
|
||||
raise ValueError('Invalid value for UUIDField: %r' % value)
|
||||
|
||||
def to_db_string(self, value, quote=True):
|
||||
return escape(str(value), quote)
|
||||
|
||||
|
||||
class NullableField(Field):
|
||||
|
|
@ -480,12 +516,12 @@ class NullableField(Field):
|
|||
class_default = None
|
||||
|
||||
def __init__(self, inner_field, default=None, alias=None, materialized=None,
|
||||
extra_null_values=None):
|
||||
extra_null_values=None, codec=None):
|
||||
self.inner_field = inner_field
|
||||
self._null_values = [None]
|
||||
if extra_null_values:
|
||||
self._null_values.extend(extra_null_values)
|
||||
super(NullableField, self).__init__(default, alias, materialized, readonly=None)
|
||||
super(NullableField, self).__init__(default, alias, materialized, readonly=None, codec=codec)
|
||||
|
||||
def to_python(self, value, timezone_in_use):
|
||||
if value == '\\N' or value in self._null_values:
|
||||
|
|
@ -500,5 +536,38 @@ class NullableField(Field):
|
|||
return '\\N'
|
||||
return self.inner_field.to_db_string(value, quote=quote)
|
||||
|
||||
def get_sql(self, with_default_expression=True):
|
||||
return 'Nullable(%s)' % self.inner_field.get_sql(with_default_expression=False)
|
||||
def get_sql(self, with_default_expression=True, db=None):
|
||||
sql = 'Nullable(%s)' % self.inner_field.get_sql(with_default_expression=False, db=db)
|
||||
if with_default_expression:
|
||||
sql += self._extra_params(db)
|
||||
return sql
|
||||
|
||||
|
||||
class LowCardinalityField(Field):
|
||||
|
||||
def __init__(self, inner_field, default=None, alias=None, materialized=None, readonly=None, codec=None):
|
||||
assert isinstance(inner_field, Field), "The first argument of LowCardinalityField must be a Field instance. Not: {}".format(inner_field)
|
||||
assert not isinstance(inner_field, LowCardinalityField), "LowCardinality inner fields are not supported by the ORM"
|
||||
assert not isinstance(inner_field, ArrayField), "Array field inside LowCardinality are not supported by the ORM. Use Array(LowCardinality) instead"
|
||||
self.inner_field = inner_field
|
||||
self.class_default = self.inner_field.class_default
|
||||
super(LowCardinalityField, self).__init__(default, alias, materialized, readonly, codec)
|
||||
|
||||
def to_python(self, value, timezone_in_use):
|
||||
return self.inner_field.to_python(value, timezone_in_use)
|
||||
|
||||
def validate(self, value):
|
||||
self.inner_field.validate(value)
|
||||
|
||||
def to_db_string(self, value, quote=True):
|
||||
return self.inner_field.to_db_string(value, quote=quote)
|
||||
|
||||
def get_sql(self, with_default_expression=True, db=None):
|
||||
if db and db.has_low_cardinality_support:
|
||||
sql = 'LowCardinality(%s)' % self.inner_field.get_sql(with_default_expression=False)
|
||||
else:
|
||||
sql = self.inner_field.get_sql(with_default_expression=False)
|
||||
logger.warning('LowCardinalityField not supported on clickhouse-server version < 19.0 using {} as fallback'.format(self.inner_field.__class__.__name__))
|
||||
if with_default_expression:
|
||||
sql += self._extra_params(db)
|
||||
return sql
|
||||
|
|
|
|||
|
|
@ -75,13 +75,16 @@ class AlterTable(Operation):
|
|||
# Identify fields that were added to the model
|
||||
prev_name = None
|
||||
for name, field in iteritems(self.model_class.fields()):
|
||||
is_regular_field = not (field.materialized or field.alias)
|
||||
if name not in table_fields:
|
||||
logger.info(' Add column %s', name)
|
||||
assert prev_name, 'Cannot add a column to the beginning of the table'
|
||||
cmd = 'ADD COLUMN %s %s AFTER %s' % (name, field.get_sql(), prev_name)
|
||||
cmd = 'ADD COLUMN %s %s' % (name, field.get_sql(db=database))
|
||||
if is_regular_field:
|
||||
cmd += ' AFTER %s' % prev_name
|
||||
self._alter_table(database, cmd)
|
||||
|
||||
if not field.materialized and not field.alias:
|
||||
if is_regular_field:
|
||||
# ALIAS and MATERIALIZED fields are not stored in the database, and raise DatabaseError
|
||||
# (no AFTER column). So we will skip them
|
||||
prev_name = name
|
||||
|
|
@ -90,7 +93,7 @@ class AlterTable(Operation):
|
|||
# The order of class attributes can be changed any time, so we can't count on it
|
||||
# Secondly, MATERIALIZED and ALIAS fields are always at the end of the DESC, so we can't expect them to save
|
||||
# attribute position. Watch https://github.com/Infinidat/infi.clickhouse_orm/issues/47
|
||||
model_fields = {name: field.get_sql(with_default_expression=False)
|
||||
model_fields = {name: field.get_sql(with_default_expression=False, db=database)
|
||||
for name, field in iteritems(self.model_class.fields())}
|
||||
for field_name, field_sql in self._get_table_fields(database):
|
||||
# All fields must have been created and dropped by this moment
|
||||
|
|
|
|||
|
|
@ -197,7 +197,7 @@ class Model(with_metaclass(ModelBase)):
|
|||
parts = ['CREATE TABLE IF NOT EXISTS `%s`.`%s` (' % (db.db_name, cls.table_name())]
|
||||
cols = []
|
||||
for name, field in iteritems(cls.fields()):
|
||||
cols.append(' %s %s' % (name, field.get_sql()))
|
||||
cols.append(' %s %s' % (name, field.get_sql(db=db)))
|
||||
parts.append(',\n'.join(cols))
|
||||
parts.append(')')
|
||||
parts.append('ENGINE = ' + cls.engine.create_table_sql(db))
|
||||
|
|
@ -318,9 +318,16 @@ class MergeModel(Model):
|
|||
|
||||
@classmethod
|
||||
def create_table_sql(cls, db):
|
||||
assert isinstance(cls.engine, Merge), "engine must be engines.Merge instance"
|
||||
return super(MergeModel, cls).create_table_sql(db)
|
||||
|
||||
assert isinstance(cls.engine, Merge), "engine must be an instance of engines.Merge"
|
||||
parts = ['CREATE TABLE IF NOT EXISTS `%s`.`%s` (' % (db.db_name, cls.table_name())]
|
||||
cols = []
|
||||
for name, field in iteritems(cls.fields()):
|
||||
if name != '_table':
|
||||
cols.append(' %s %s' % (name, field.get_sql(db=db)))
|
||||
parts.append(',\n'.join(cols))
|
||||
parts.append(')')
|
||||
parts.append('ENGINE = ' + cls.engine.create_table_sql(db))
|
||||
return '\n'.join(parts)
|
||||
|
||||
# TODO: base class for models that require specific engine
|
||||
|
||||
|
|
@ -331,7 +338,7 @@ class DistributedModel(Model):
|
|||
"""
|
||||
|
||||
def set_database(self, db):
|
||||
assert isinstance(self.engine, Distributed), "engine must be engines.Distributed instance"
|
||||
assert isinstance(self.engine, Distributed), "engine must be an instance of engines.Distributed"
|
||||
res = super(DistributedModel, self).set_database(db)
|
||||
return res
|
||||
|
||||
|
|
|
|||
|
|
@ -2,7 +2,7 @@ from __future__ import unicode_literals
|
|||
|
||||
import six
|
||||
import pytz
|
||||
from copy import copy
|
||||
from copy import copy, deepcopy
|
||||
from math import ceil
|
||||
from .engines import CollapsingMergeTree
|
||||
from datetime import date, datetime
|
||||
|
|
@ -185,25 +185,45 @@ class FieldCond(Cond):
|
|||
def to_sql(self, model_cls):
|
||||
return self._operator.to_sql(model_cls, self._field_name, self._value)
|
||||
|
||||
def __deepcopy__(self, memodict={}):
|
||||
res = copy(self)
|
||||
res._value = deepcopy(self._value)
|
||||
return res
|
||||
|
||||
|
||||
class Q(object):
|
||||
|
||||
AND_MODE = ' AND '
|
||||
OR_MODE = ' OR '
|
||||
AND_MODE = 'AND'
|
||||
OR_MODE = 'OR'
|
||||
|
||||
def __init__(self, *filter_funcs, **filter_fields):
|
||||
self._conds = list(filter_funcs) + [self._build_cond(k, v) for k, v in six.iteritems(filter_fields)]
|
||||
self._l_child = None
|
||||
self._r_child = None
|
||||
self._children = []
|
||||
self._negate = False
|
||||
self._mode = self.AND_MODE
|
||||
|
||||
@property
|
||||
def is_empty(self):
|
||||
"""
|
||||
Checks if there are any conditions in Q object
|
||||
:return: Boolean
|
||||
"""
|
||||
return not bool(self._conds or self._children)
|
||||
|
||||
@classmethod
|
||||
def _construct_from(cls, l_child, r_child, mode):
|
||||
q = Q()
|
||||
q._l_child = l_child
|
||||
q._r_child = r_child
|
||||
q._mode = mode # AND/OR
|
||||
if mode == l_child._mode:
|
||||
q = deepcopy(l_child)
|
||||
q._children.append(deepcopy(r_child))
|
||||
elif mode == r_child._mode:
|
||||
q = deepcopy(r_child)
|
||||
q._children.append(deepcopy(l_child))
|
||||
else:
|
||||
# Different modes
|
||||
q = Q()
|
||||
q._children = [l_child, r_child]
|
||||
q._mode = mode # AND/OR
|
||||
|
||||
return q
|
||||
|
||||
def _build_cond(self, key, value):
|
||||
|
|
@ -214,16 +234,27 @@ class Q(object):
|
|||
return FieldCond(field_name, operator, value)
|
||||
|
||||
def to_sql(self, model_cls):
|
||||
condition_sql = []
|
||||
|
||||
if self._conds:
|
||||
sql = self._mode.join(cond.to_sql(model_cls) for cond in self._conds)
|
||||
condition_sql.extend([cond.to_sql(model_cls) for cond in self._conds])
|
||||
|
||||
if self._children:
|
||||
condition_sql.extend([child.to_sql(model_cls) for child in self._children if child])
|
||||
|
||||
if not condition_sql:
|
||||
# Empty Q() object returns everything
|
||||
sql = '1'
|
||||
elif len(condition_sql) == 1:
|
||||
# Skip not needed brackets over single condition
|
||||
sql = condition_sql[0]
|
||||
else:
|
||||
if self._l_child and self._r_child:
|
||||
sql = '({} {} {})'.format(
|
||||
self._l_child.to_sql(model_cls), self._mode, self._r_child.to_sql(model_cls))
|
||||
else:
|
||||
return '1'
|
||||
# Each condition must be enclosed in brackets, or order of operations may be wrong
|
||||
sql = '(%s)' % ') {} ('.format(self._mode).join(condition_sql)
|
||||
|
||||
if self._negate:
|
||||
sql = 'NOT (%s)' % sql
|
||||
|
||||
return sql
|
||||
|
||||
def __or__(self, other):
|
||||
|
|
@ -237,6 +268,20 @@ class Q(object):
|
|||
q._negate = True
|
||||
return q
|
||||
|
||||
def __bool__(self):
|
||||
return not self.is_empty
|
||||
|
||||
def __deepcopy__(self, memodict={}):
|
||||
q = Q()
|
||||
q._conds = [deepcopy(cond) for cond in self._conds]
|
||||
q._negate = self._negate
|
||||
q._mode = self._mode
|
||||
|
||||
if self._children:
|
||||
q._children = [deepcopy(child) for child in self._children]
|
||||
|
||||
return q
|
||||
|
||||
|
||||
@six.python_2_unicode_compatible
|
||||
class QuerySet(object):
|
||||
|
|
@ -254,7 +299,10 @@ class QuerySet(object):
|
|||
self._model_cls = model_cls
|
||||
self._database = database
|
||||
self._order_by = []
|
||||
self._q = []
|
||||
self._where_q = Q()
|
||||
self._prewhere_q = Q()
|
||||
self._grouping_fields = []
|
||||
self._grouping_with_totals = False
|
||||
self._fields = model_cls.fields().keys()
|
||||
self._extra = {}
|
||||
self._limits = None
|
||||
|
|
@ -297,22 +345,49 @@ class QuerySet(object):
|
|||
qs._limits = (start, stop - start)
|
||||
return qs
|
||||
|
||||
def as_sql(self):
|
||||
def select_fields_as_sql(self):
|
||||
"""
|
||||
Returns the whole query as a SQL string.
|
||||
Returns the selected fields or expressions as a SQL string.
|
||||
"""
|
||||
distinct = 'DISTINCT ' if self._distinct else ''
|
||||
fields = '*'
|
||||
if self._fields:
|
||||
fields = comma_join('`%s`' % field for field in self._fields)
|
||||
for name, func in self._extra.items():
|
||||
fields += ', %s AS %s' % (func.to_sql(), name)
|
||||
ordering = '\nORDER BY ' + self.order_by_as_sql() if self._order_by else ''
|
||||
limit = '\nLIMIT %d, %d' % self._limits if self._limits else ''
|
||||
return fields
|
||||
|
||||
def as_sql(self):
|
||||
"""
|
||||
Returns the whole query as a SQL string.
|
||||
"""
|
||||
distinct = 'DISTINCT ' if self._distinct else ''
|
||||
final = ' FINAL' if self._final else ''
|
||||
params = (distinct, fields, self._model_cls.table_name(), final,
|
||||
self.conditions_as_sql(), ordering, limit)
|
||||
return u'SELECT %s%s\nFROM `%s`%s\nWHERE %s%s%s' % params
|
||||
table_name = self._model_cls.table_name()
|
||||
if not self._model_cls.is_system_model():
|
||||
table_name = '`%s`' % table_name
|
||||
|
||||
params = (distinct, self.select_fields_as_sql(), table_name, final)
|
||||
sql = u'SELECT %s%s\nFROM %s%s' % params
|
||||
|
||||
if self._prewhere_q and not self._prewhere_q.is_empty:
|
||||
sql += '\nPREWHERE ' + self.conditions_as_sql(prewhere=True)
|
||||
|
||||
if self._where_q and not self._where_q.is_empty:
|
||||
sql += '\nWHERE ' + self.conditions_as_sql(prewhere=False)
|
||||
|
||||
if self._grouping_fields:
|
||||
sql += '\nGROUP BY %s' % comma_join('`%s`' % field for field in self._grouping_fields)
|
||||
|
||||
if self._grouping_with_totals:
|
||||
sql += ' WITH TOTALS'
|
||||
|
||||
if self._order_by:
|
||||
sql += '\nORDER BY ' + self.order_by_as_sql()
|
||||
|
||||
if self._limits:
|
||||
sql += '\nLIMIT %d, %d' % self._limits
|
||||
|
||||
return sql
|
||||
|
||||
def order_by_as_sql(self):
|
||||
"""
|
||||
|
|
@ -323,14 +398,12 @@ class QuerySet(object):
|
|||
for field in self._order_by
|
||||
])
|
||||
|
||||
def conditions_as_sql(self):
|
||||
def conditions_as_sql(self, prewhere=False):
|
||||
"""
|
||||
Returns the contents of the query's `WHERE` clause as a string.
|
||||
Returns the contents of the query's `WHERE` or `PREWHERE` clause as a string.
|
||||
"""
|
||||
if self._q:
|
||||
return u' AND '.join([q.to_sql(self._model_cls) for q in self._q])
|
||||
else:
|
||||
return u'1'
|
||||
q_object = self._prewhere_q if prewhere else self._where_q
|
||||
return q_object.to_sql(self._model_cls)
|
||||
|
||||
def count(self):
|
||||
"""
|
||||
|
|
@ -341,8 +414,10 @@ class QuerySet(object):
|
|||
sql = u'SELECT count() FROM (%s)' % self.as_sql()
|
||||
raw = self._database.raw(sql)
|
||||
return int(raw) if raw else 0
|
||||
|
||||
# Simple case
|
||||
return self._database.count(self._model_cls, self.conditions_as_sql())
|
||||
conditions = (self._where_q & self._prewhere_q).to_sql(self._model_cls)
|
||||
return self._database.count(self._model_cls, conditions)
|
||||
|
||||
def order_by(self, *field_names):
|
||||
"""
|
||||
|
|
@ -367,32 +442,50 @@ class QuerySet(object):
|
|||
qs._extra = kwargs
|
||||
return qs
|
||||
|
||||
def filter(self, *q, **filter_fields):
|
||||
"""
|
||||
Returns a copy of this queryset that includes only rows matching the conditions.
|
||||
Add q object to query if it specified.
|
||||
"""
|
||||
from infi.clickhouse_orm.funcs import F
|
||||
def _filter_or_exclude(self, *q, **kwargs):
|
||||
from .funcs import F
|
||||
|
||||
inverse = kwargs.pop('_inverse', False)
|
||||
prewhere = kwargs.pop('prewhere', False)
|
||||
|
||||
qs = copy(self)
|
||||
qs._q = list(self._q)
|
||||
|
||||
condition = Q()
|
||||
for arg in q:
|
||||
if isinstance(arg, Q):
|
||||
qs._q.append(arg)
|
||||
condition &= arg
|
||||
elif isinstance(arg, F):
|
||||
qs._q.append(Q(arg))
|
||||
condition &= Q(arg)
|
||||
else:
|
||||
raise TypeError('Invalid argument "%r" to queryset filter' % arg)
|
||||
if filter_fields:
|
||||
qs._q += [Q(**filter_fields)]
|
||||
|
||||
if kwargs:
|
||||
condition &= Q(**kwargs)
|
||||
|
||||
if inverse:
|
||||
condition = ~condition
|
||||
|
||||
condition = copy(self._prewhere_q if prewhere else self._where_q) & condition
|
||||
if prewhere:
|
||||
qs._prewhere_q = condition
|
||||
else:
|
||||
qs._where_q = condition
|
||||
|
||||
return qs
|
||||
|
||||
def exclude(self, **filter_fields):
|
||||
def filter(self, *q, **kwargs):
|
||||
"""
|
||||
Returns a copy of this queryset that includes only rows matching the conditions.
|
||||
Pass `prewhere=True` to apply the conditions as PREWHERE instead of WHERE.
|
||||
"""
|
||||
return self._filter_or_exclude(*q, **kwargs)
|
||||
|
||||
def exclude(self, *q, **kwargs):
|
||||
"""
|
||||
Returns a copy of this queryset that excludes all rows matching the conditions.
|
||||
Pass `prewhere=True` to apply the conditions as PREWHERE instead of WHERE.
|
||||
"""
|
||||
qs = copy(self)
|
||||
qs._q = list(self._q) + [~Q(**filter_fields)]
|
||||
return qs
|
||||
return self._filter_or_exclude(*q, _inverse=True, **kwargs)
|
||||
|
||||
def paginate(self, page_num=1, page_size=100):
|
||||
"""
|
||||
|
|
@ -486,7 +579,8 @@ class AggregateQuerySet(QuerySet):
|
|||
self._grouping_fields = grouping_fields
|
||||
self._calculated_fields = calculated_fields
|
||||
self._order_by = list(base_qs._order_by)
|
||||
self._q = list(base_qs._q)
|
||||
self._where_q = base_qs._where_q
|
||||
self._prewhere_q = base_qs._prewhere_q
|
||||
self._limits = base_qs._limits
|
||||
self._distinct = base_qs._distinct
|
||||
|
||||
|
|
@ -515,26 +609,11 @@ class AggregateQuerySet(QuerySet):
|
|||
"""
|
||||
raise NotImplementedError('Cannot re-aggregate an AggregateQuerySet')
|
||||
|
||||
def as_sql(self):
|
||||
def select_fields_as_sql(self):
|
||||
"""
|
||||
Returns the whole query as a SQL string.
|
||||
Returns the selected fields or expressions as a SQL string.
|
||||
"""
|
||||
distinct = 'DISTINCT ' if self._distinct else ''
|
||||
grouping = comma_join('`%s`' % field for field in self._grouping_fields)
|
||||
fields = comma_join(list(self._fields) + ['%s AS %s' % (v, k) for k, v in self._calculated_fields.items()])
|
||||
params = dict(
|
||||
distinct=distinct,
|
||||
grouping=grouping or "''",
|
||||
fields=fields,
|
||||
table=self._model_cls.table_name(),
|
||||
conds=self.conditions_as_sql()
|
||||
)
|
||||
sql = u'SELECT %(distinct)s%(fields)s\nFROM `%(table)s`\nWHERE %(conds)s\nGROUP BY %(grouping)s' % params
|
||||
if self._order_by:
|
||||
sql += '\nORDER BY ' + self.order_by_as_sql()
|
||||
if self._limits:
|
||||
sql += '\nLIMIT %d, %d' % self._limits
|
||||
return sql
|
||||
return comma_join(list(self._fields) + ['%s AS %s' % (v, k) for k, v in self._calculated_fields.items()])
|
||||
|
||||
def __iter__(self):
|
||||
return self._database.select(self.as_sql()) # using an ad-hoc model
|
||||
|
|
@ -547,4 +626,12 @@ class AggregateQuerySet(QuerySet):
|
|||
raw = self._database.raw(sql)
|
||||
return int(raw) if raw else 0
|
||||
|
||||
|
||||
def with_totals(self):
|
||||
"""
|
||||
Adds WITH TOTALS modifier ot GROUP BY, making query return extra row
|
||||
with aggregate function calculated across all the rows. More information:
|
||||
https://clickhouse.yandex/docs/en/query_language/select/#with-totals-modifier
|
||||
"""
|
||||
qs = copy(self)
|
||||
qs._grouping_with_totals = True
|
||||
return qs
|
||||
|
|
|
|||
|
|
@ -19,8 +19,8 @@ class SystemPart(Model):
|
|||
"""
|
||||
OPERATIONS = frozenset({'DETACH', 'DROP', 'ATTACH', 'FREEZE', 'FETCH'})
|
||||
|
||||
readonly = True
|
||||
system = True
|
||||
_readonly = True
|
||||
_system = True
|
||||
|
||||
database = StringField() # Name of the database where the table that this part belongs to is located.
|
||||
table = StringField() # Name of the table that this part belongs to.
|
||||
|
|
|
|||
|
|
@ -14,7 +14,7 @@ logging.getLogger("requests").setLevel(logging.WARNING)
|
|||
class TestCaseWithData(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db')
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
self.database.create_table(Person)
|
||||
|
||||
def tearDown(self):
|
||||
|
|
|
|||
7
tests/sample_migrations/0015.py
Normal file
7
tests/sample_migrations/0015.py
Normal file
|
|
@ -0,0 +1,7 @@
|
|||
from infi.clickhouse_orm import migrations
|
||||
from ..test_migrations import *
|
||||
|
||||
operations = [
|
||||
migrations.AlterTable(Model4_compressed),
|
||||
migrations.AlterTable(Model2LowCardinality)
|
||||
]
|
||||
|
|
@ -11,7 +11,7 @@ from infi.clickhouse_orm.engines import *
|
|||
class MaterializedFieldsTest(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db')
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
self.database.create_table(ModelWithAliasFields)
|
||||
|
||||
def tearDown(self):
|
||||
|
|
|
|||
|
|
@ -11,7 +11,7 @@ from infi.clickhouse_orm.engines import *
|
|||
class ArrayFieldsTest(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db')
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
self.database.create_table(ModelWithArrays)
|
||||
|
||||
def tearDown(self):
|
||||
|
|
|
|||
123
tests/test_compressed_fields.py
Normal file
123
tests/test_compressed_fields.py
Normal file
|
|
@ -0,0 +1,123 @@
|
|||
from __future__ import unicode_literals
|
||||
import unittest
|
||||
import datetime
|
||||
import pytz
|
||||
|
||||
from infi.clickhouse_orm.database import Database
|
||||
from infi.clickhouse_orm.models import Model
|
||||
from infi.clickhouse_orm.fields import *
|
||||
from infi.clickhouse_orm.engines import *
|
||||
from infi.clickhouse_orm.utils import parse_tsv
|
||||
|
||||
|
||||
class CompressedFieldsTestCase(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
self.database.create_table(CompressedModel)
|
||||
|
||||
def tearDown(self):
|
||||
self.database.drop_database()
|
||||
|
||||
def test_defaults(self):
|
||||
# Check that all fields have their explicit or implicit defaults
|
||||
instance = CompressedModel()
|
||||
self.database.insert([instance])
|
||||
self.assertEqual(instance.date_field, datetime.date(1970, 1, 1))
|
||||
self.assertEqual(instance.datetime_field, datetime.datetime(1970, 1, 1, tzinfo=pytz.utc))
|
||||
self.assertEqual(instance.string_field, 'dozo')
|
||||
self.assertEqual(instance.int64_field, 42)
|
||||
self.assertEqual(instance.float_field, 0)
|
||||
self.assertEqual(instance.nullable_field, None)
|
||||
self.assertEqual(instance.array_field, [])
|
||||
|
||||
def test_assignment(self):
|
||||
# Check that all fields are assigned during construction
|
||||
kwargs = dict(
|
||||
uint64_field=217,
|
||||
date_field=datetime.date(1973, 12, 6),
|
||||
datetime_field=datetime.datetime(2000, 5, 24, 10, 22, tzinfo=pytz.utc),
|
||||
string_field='aloha',
|
||||
int64_field=-50,
|
||||
float_field=3.14,
|
||||
nullable_field=-2.718281,
|
||||
array_field=['123456789123456','','a']
|
||||
)
|
||||
instance = CompressedModel(**kwargs)
|
||||
self.database.insert([instance])
|
||||
for name, value in kwargs.items():
|
||||
self.assertEqual(kwargs[name], getattr(instance, name))
|
||||
|
||||
def test_string_conversion(self):
|
||||
# Check field conversion from string during construction
|
||||
instance = CompressedModel(date_field='1973-12-06', int64_field='100', float_field='7', nullable_field=None, array_field='[a,b,c]')
|
||||
self.assertEqual(instance.date_field, datetime.date(1973, 12, 6))
|
||||
self.assertEqual(instance.int64_field, 100)
|
||||
self.assertEqual(instance.float_field, 7)
|
||||
self.assertEqual(instance.nullable_field, None)
|
||||
self.assertEqual(instance.array_field, ['a', 'b', 'c'])
|
||||
# Check field conversion from string during assignment
|
||||
instance.int64_field = '99'
|
||||
self.assertEqual(instance.int64_field, 99)
|
||||
|
||||
def test_to_dict(self):
|
||||
instance = CompressedModel(date_field='1973-12-06', int64_field='100', float_field='7', array_field='[a,b,c]')
|
||||
self.assertDictEqual(instance.to_dict(), {
|
||||
"date_field": datetime.date(1973, 12, 6),
|
||||
"int64_field": 100,
|
||||
"float_field": 7.0,
|
||||
"datetime_field": datetime.datetime(1970, 1, 1, 0, 0, 0, tzinfo=pytz.utc),
|
||||
"alias_field": 0.0,
|
||||
'string_field': 'dozo',
|
||||
'nullable_field': None,
|
||||
'uint64_field': 0,
|
||||
'array_field': ['a','b','c']
|
||||
})
|
||||
self.assertDictEqual(instance.to_dict(include_readonly=False), {
|
||||
"date_field": datetime.date(1973, 12, 6),
|
||||
"int64_field": 100,
|
||||
"float_field": 7.0,
|
||||
"datetime_field": datetime.datetime(1970, 1, 1, 0, 0, 0, tzinfo=pytz.utc),
|
||||
'string_field': 'dozo',
|
||||
'nullable_field': None,
|
||||
'uint64_field': 0,
|
||||
'array_field': ['a', 'b', 'c']
|
||||
})
|
||||
self.assertDictEqual(
|
||||
instance.to_dict(include_readonly=False, field_names=('int64_field', 'alias_field', 'datetime_field')), {
|
||||
"int64_field": 100,
|
||||
"datetime_field": datetime.datetime(1970, 1, 1, 0, 0, 0, tzinfo=pytz.utc)
|
||||
})
|
||||
|
||||
# This test will fail on clickhouse version < 19.1.16, use skip test
|
||||
def test_confirm_compression_codec(self):
|
||||
instance = CompressedModel(date_field='1973-12-06', int64_field='100', float_field='7', array_field='[a,b,c]')
|
||||
self.database.insert([instance])
|
||||
r = self.database.raw("select name, compression_codec from system.columns where table = '{}' and database='{}' FORMAT TabSeparatedWithNamesAndTypes".format(instance.table_name(), self.database.db_name))
|
||||
lines = r.splitlines()
|
||||
field_names = parse_tsv(lines[0])
|
||||
field_types = parse_tsv(lines[1])
|
||||
data = [tuple(parse_tsv(line)) for line in lines[2:]]
|
||||
self.assertListEqual(data, [('uint64_field', 'CODEC(ZSTD(10))'),
|
||||
('datetime_field', 'CODEC(Delta(4), ZSTD(1))'),
|
||||
('date_field', 'CODEC(Delta(4), ZSTD(22))'),
|
||||
('int64_field', 'CODEC(LZ4)'),
|
||||
('string_field', 'CODEC(LZ4HC(10))'),
|
||||
('nullable_field', 'CODEC(ZSTD(1))'),
|
||||
('array_field', 'CODEC(Delta(2), LZ4HC(0))'),
|
||||
('float_field', 'CODEC(NONE)'),
|
||||
('alias_field', 'CODEC(ZSTD(4))')])
|
||||
|
||||
|
||||
class CompressedModel(Model):
|
||||
uint64_field = UInt64Field(codec='ZSTD(10)')
|
||||
datetime_field = DateTimeField(codec='Delta,ZSTD')
|
||||
date_field = DateField(codec='Delta(4),ZSTD(22)')
|
||||
int64_field = Int64Field(default=42, codec='LZ4')
|
||||
string_field = StringField(default='dozo', codec='LZ4HC(10)')
|
||||
nullable_field = NullableField(Float32Field(), codec='ZSTD')
|
||||
array_field = ArrayField(FixedStringField(length=15), codec='Delta(2),LZ4HC')
|
||||
float_field = Float32Field(codec='NONE')
|
||||
alias_field = Float32Field(alias='float_field', codec='ZSTD(4)')
|
||||
|
||||
engine = MergeTree('datetime_field', ('uint64_field', 'datetime_field'))
|
||||
|
|
@ -1,18 +1,15 @@
|
|||
from __future__ import unicode_literals
|
||||
import unittest
|
||||
import six
|
||||
from uuid import UUID
|
||||
from infi.clickhouse_orm.database import Database
|
||||
from infi.clickhouse_orm.fields import Field, Int16Field
|
||||
from infi.clickhouse_orm.models import Model
|
||||
from infi.clickhouse_orm.engines import Memory
|
||||
from infi.clickhouse_orm.utils import escape
|
||||
|
||||
|
||||
class CustomFieldsTest(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db')
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
|
||||
def tearDown(self):
|
||||
self.database.drop_database()
|
||||
|
|
@ -35,37 +32,6 @@ class CustomFieldsTest(unittest.TestCase):
|
|||
with self.assertRaises(ValueError):
|
||||
TestModel(i=1, f=value)
|
||||
|
||||
def test_uuid_field(self):
|
||||
# Create a model
|
||||
class TestModel(Model):
|
||||
i = Int16Field()
|
||||
f = UUIDField()
|
||||
engine = Memory()
|
||||
self.database.create_table(TestModel)
|
||||
# Check valid values (all values are the same UUID)
|
||||
values = [
|
||||
'{12345678-1234-5678-1234-567812345678}',
|
||||
'12345678123456781234567812345678',
|
||||
'urn:uuid:12345678-1234-5678-1234-567812345678',
|
||||
'\x12\x34\x56\x78'*4,
|
||||
(0x12345678, 0x1234, 0x5678, 0x12, 0x34, 0x567812345678),
|
||||
0x12345678123456781234567812345678,
|
||||
]
|
||||
for index, value in enumerate(values):
|
||||
rec = TestModel(i=index, f=value)
|
||||
self.database.insert([rec])
|
||||
for rec in TestModel.objects_in(self.database):
|
||||
self.assertEqual(rec.f, UUID(values[0]))
|
||||
# Check that ClickHouse encoding functions are supported
|
||||
for rec in self.database.select("SELECT i, UUIDNumToString(f) AS f FROM testmodel", TestModel):
|
||||
self.assertEqual(rec.f, UUID(values[0]))
|
||||
for rec in self.database.select("SELECT 1 as i, UUIDStringToNum('12345678-1234-5678-1234-567812345678') AS f", TestModel):
|
||||
self.assertEqual(rec.f, UUID(values[0]))
|
||||
# Check invalid values
|
||||
for value in [None, 'zzz', -1, '123']:
|
||||
with self.assertRaises(ValueError):
|
||||
TestModel(i=1, f=value)
|
||||
|
||||
|
||||
class BooleanField(Field):
|
||||
|
||||
|
|
@ -88,32 +54,3 @@ class BooleanField(Field):
|
|||
# The value was already converted by to_python, so it's a bool
|
||||
return '1' if value else '0'
|
||||
|
||||
|
||||
class UUIDField(Field):
|
||||
|
||||
# The ClickHouse column type to use
|
||||
db_type = 'FixedString(16)'
|
||||
|
||||
# The default value if empty
|
||||
class_default = UUID(int=0)
|
||||
|
||||
def to_python(self, value, timezone_in_use):
|
||||
# Convert valid values to UUID instance
|
||||
if isinstance(value, UUID):
|
||||
return value
|
||||
elif isinstance(value, six.string_types):
|
||||
return UUID(bytes=value.encode('latin1')) if len(value) == 16 else UUID(value)
|
||||
elif isinstance(value, six.integer_types):
|
||||
return UUID(int=value)
|
||||
elif isinstance(value, tuple):
|
||||
return UUID(fields=value)
|
||||
else:
|
||||
raise ValueError('Invalid value for UUIDField: %r' % value)
|
||||
|
||||
def to_db_string(self, value, quote=True):
|
||||
# The value was already converted by to_python, so it's a UUID instance
|
||||
val = value.bytes
|
||||
if six.PY3:
|
||||
val = str(val, 'latin1')
|
||||
return escape(val, quote)
|
||||
|
||||
|
|
|
|||
|
|
@ -112,6 +112,14 @@ class DatabaseTestCase(TestCaseWithData):
|
|||
self.assertEqual([obj.to_tsv() for obj in page_a.objects],
|
||||
[obj.to_tsv() for obj in page_b.objects])
|
||||
|
||||
def test_pagination_empty_page(self):
|
||||
for page_num in (-1, 1, 2):
|
||||
page = self.database.paginate(Person, 'first_name, last_name', page_num, 10, conditions="first_name = 'Ziggy'")
|
||||
self.assertEqual(page.number_of_objects, 0)
|
||||
self.assertEqual(page.objects, [])
|
||||
self.assertEqual(page.pages_total, 0)
|
||||
self.assertEqual(page.number, max(page_num, 1))
|
||||
|
||||
def test_pagination_invalid_page(self):
|
||||
self._insert_and_check(self._sample_data(), len(data))
|
||||
for page_num in (0, -2, -100):
|
||||
|
|
@ -142,7 +150,7 @@ class DatabaseTestCase(TestCaseWithData):
|
|||
|
||||
exc = cm.exception
|
||||
self.assertEqual(exc.code, 193)
|
||||
self.assertEqual(exc.message, 'Wrong password for user default')
|
||||
self.assertTrue(exc.message.startswith('Wrong password for user default'))
|
||||
|
||||
def test_nonexisting_db(self):
|
||||
db = Database('db_not_here', autocreate=False)
|
||||
|
|
@ -150,7 +158,7 @@ class DatabaseTestCase(TestCaseWithData):
|
|||
db.create_table(Person)
|
||||
exc = cm.exception
|
||||
self.assertEqual(exc.code, 81)
|
||||
self.assertEqual(exc.message, "Database db_not_here doesn't exist")
|
||||
self.assertTrue(exc.message.startswith("Database db_not_here doesn't exist"))
|
||||
# Create and delete the db twice, to ensure db_exists gets updated
|
||||
for i in range(2):
|
||||
# Now create the database - should succeed
|
||||
|
|
|
|||
|
|
@ -10,7 +10,7 @@ from infi.clickhouse_orm.engines import *
|
|||
class DateFieldsTest(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db')
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
self.database.create_table(ModelWithDate)
|
||||
|
||||
def tearDown(self):
|
||||
|
|
|
|||
|
|
@ -12,7 +12,7 @@ from infi.clickhouse_orm.engines import *
|
|||
class DecimalFieldsTest(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db')
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
try:
|
||||
self.database.create_table(DecimalModel)
|
||||
except ServerError as e:
|
||||
|
|
|
|||
|
|
@ -14,7 +14,7 @@ logging.getLogger("requests").setLevel(logging.WARNING)
|
|||
class _EnginesHelperTestCase(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db')
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
|
||||
def tearDown(self):
|
||||
self.database.drop_database()
|
||||
|
|
@ -115,8 +115,8 @@ class EnginesTestCase(_EnginesHelperTestCase):
|
|||
TestModel2(date='2017-01-02', event_id=2, event_group=2, event_count=2, event_version=2)
|
||||
])
|
||||
# event_uversion is materialized field. So * won't select it and it will be zero
|
||||
res = self.database.select('SELECT *, event_uversion FROM $table ORDER BY event_id', model_class=TestMergeModel)
|
||||
res = [row for row in res]
|
||||
res = self.database.select('SELECT *, _table, event_uversion FROM $table ORDER BY event_id', model_class=TestMergeModel)
|
||||
res = list(res)
|
||||
self.assertEqual(2, len(res))
|
||||
self.assertDictEqual({
|
||||
'_table': 'testmodel1',
|
||||
|
|
@ -161,9 +161,9 @@ class EnginesTestCase(_EnginesHelperTestCase):
|
|||
|
||||
self.assertEqual(2, len(parts))
|
||||
self.assertEqual('testcollapsemodel', parts[0].table)
|
||||
self.assertEqual('(201701, 13)', parts[0].partition)
|
||||
self.assertEqual('(201701, 13)'.replace(' ', ''), parts[0].partition.replace(' ', ''))
|
||||
self.assertEqual('testmodel', parts[1].table)
|
||||
self.assertEqual('(201701, 13)', parts[1].partition)
|
||||
self.assertEqual('(201701, 13)'.replace(' ', ''), parts[1].partition.replace(' ', ''))
|
||||
|
||||
|
||||
class SampleModel(Model):
|
||||
|
|
@ -209,7 +209,7 @@ class DistributedTestCase(_EnginesHelperTestCase):
|
|||
|
||||
exc = cm.exception
|
||||
self.assertEqual(exc.code, 170)
|
||||
self.assertEqual(exc.message, "Requested cluster 'cluster_name' not found")
|
||||
self.assertTrue(exc.message.startswith("Requested cluster 'cluster_name' not found"))
|
||||
|
||||
def test_verbose_engine_two_superclasses(self):
|
||||
class TestModel2(SampleModel):
|
||||
|
|
|
|||
|
|
@ -6,16 +6,13 @@ from infi.clickhouse_orm.models import Model
|
|||
from infi.clickhouse_orm.fields import *
|
||||
from infi.clickhouse_orm.engines import *
|
||||
|
||||
try:
|
||||
Enum # exists in Python 3.4+
|
||||
except NameError:
|
||||
from enum import Enum # use the enum34 library instead
|
||||
from enum import Enum
|
||||
|
||||
|
||||
class EnumFieldsTest(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db')
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
self.database.create_table(ModelWithEnum)
|
||||
self.database.create_table(ModelWithEnumArray)
|
||||
|
||||
|
|
|
|||
|
|
@ -11,7 +11,7 @@ from infi.clickhouse_orm.engines import *
|
|||
class FixedStringFieldsTest(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db')
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
self.database.create_table(FixedStringModel)
|
||||
|
||||
def tearDown(self):
|
||||
|
|
|
|||
|
|
@ -24,7 +24,7 @@ class FuncsTestCase(TestCaseWithData):
|
|||
sql = 'SELECT %s AS value' % func.to_sql()
|
||||
logger.info(sql)
|
||||
result = list(self.database.select(sql))
|
||||
logger.info('\t==> %s', result[0].value)
|
||||
logger.info('\t==> %s', result[0].value if result else '<empty>')
|
||||
if expected_value is not None:
|
||||
self.assertEqual(result[0].value, expected_value)
|
||||
|
||||
|
|
@ -255,7 +255,7 @@ class FuncsTestCase(TestCaseWithData):
|
|||
try:
|
||||
self._test_func(F.base64Decode(F.base64Encode('Hello')), 'Hello')
|
||||
self._test_func(F.tryBase64Decode(F.base64Encode('Hello')), 'Hello')
|
||||
self._test_func(F.tryBase64Decode('zzz'), '')
|
||||
self._test_func(F.tryBase64Decode('zzz'), None)
|
||||
except ServerError as e:
|
||||
# ClickHouse version that doesn't support these functions
|
||||
raise unittest.SkipTest(e.message)
|
||||
|
|
|
|||
|
|
@ -9,7 +9,7 @@ from infi.clickhouse_orm import database, engines, fields, models
|
|||
class JoinTest(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = database.Database('test-db')
|
||||
self.database = database.Database('test-db', log_statements=True)
|
||||
self.database.create_table(Foo)
|
||||
self.database.create_table(Bar)
|
||||
self.database.insert([Foo(id=i) for i in range(3)])
|
||||
|
|
|
|||
|
|
@ -11,7 +11,7 @@ from infi.clickhouse_orm.engines import *
|
|||
class MaterializedFieldsTest(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db')
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
self.database.create_table(ModelWithMaterializedFields)
|
||||
|
||||
def tearDown(self):
|
||||
|
|
|
|||
|
|
@ -7,14 +7,11 @@ from infi.clickhouse_orm.fields import *
|
|||
from infi.clickhouse_orm.engines import *
|
||||
from infi.clickhouse_orm.migrations import MigrationHistory
|
||||
|
||||
from enum import Enum
|
||||
# Add tests to path so that migrations will be importable
|
||||
import sys, os
|
||||
sys.path.append(os.path.dirname(__file__))
|
||||
|
||||
try:
|
||||
Enum # exists in Python 3.4+
|
||||
except NameError:
|
||||
from enum import Enum # use the enum34 library instead
|
||||
|
||||
import logging
|
||||
logging.basicConfig(level=logging.DEBUG, format='%(message)s')
|
||||
|
|
@ -24,7 +21,7 @@ logging.getLogger("requests").setLevel(logging.WARNING)
|
|||
class MigrationsTestCase(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db')
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
self.database.drop_table(MigrationHistory)
|
||||
|
||||
def tearDown(self):
|
||||
|
|
@ -93,10 +90,21 @@ class MigrationsTestCase(unittest.TestCase):
|
|||
self.database.migrate('tests.sample_migrations', 14)
|
||||
self.assertTrue(self.tableExists(MaterializedModel1))
|
||||
self.assertEqual(self.getTableFields(MaterializedModel1),
|
||||
[('date_time', "DateTime"), ('int_field', 'Int8'), ('date', 'Date')])
|
||||
[('date_time', 'DateTime'), ('int_field', 'Int8'), ('date', 'Date'), ('int_field_plus_one', 'Int8')])
|
||||
self.assertTrue(self.tableExists(AliasModel1))
|
||||
self.assertEqual(self.getTableFields(AliasModel1),
|
||||
[('date', 'Date'), ('int_field', 'Int8'), ('date_alias', "Date")])
|
||||
[('date', 'Date'), ('int_field', 'Int8'), ('date_alias', 'Date'), ('int_field_plus_one', 'Int8')])
|
||||
self.database.migrate('tests.sample_migrations', 15)
|
||||
self.assertTrue(self.tableExists(Model4_compressed))
|
||||
if self.database.has_low_cardinality_support:
|
||||
self.assertEqual(self.getTableFields(Model2LowCardinality),
|
||||
[('date', 'Date'), ('f1', 'LowCardinality(Int32)'), ('f3', 'LowCardinality(Float32)'),
|
||||
('f2', 'LowCardinality(String)'), ('f4', 'LowCardinality(Nullable(String))'), ('f5', 'Array(LowCardinality(UInt64))')])
|
||||
else:
|
||||
logging.warning('No support for low cardinality')
|
||||
self.assertEqual(self.getTableFields(Model2),
|
||||
[('date', 'Date'), ('f1', 'Int32'), ('f3', 'Float32'), ('f2', 'String'), ('f4', 'Nullable(String)'),
|
||||
('f5', 'Array(UInt64)')])
|
||||
|
||||
|
||||
# Several different models with the same table name, to simulate a table that changes over time
|
||||
|
|
@ -183,6 +191,7 @@ class MaterializedModel1(Model):
|
|||
date_time = DateTimeField()
|
||||
date = DateField(materialized='toDate(date_time)')
|
||||
int_field = Int8Field()
|
||||
int_field_plus_one = Int8Field(materialized='int_field + 1')
|
||||
|
||||
engine = MergeTree('date', ('date',))
|
||||
|
||||
|
|
@ -206,6 +215,7 @@ class AliasModel1(Model):
|
|||
date = DateField()
|
||||
date_alias = DateField(alias='date')
|
||||
int_field = Int8Field()
|
||||
int_field_plus_one = Int8Field(alias='int_field + 1')
|
||||
|
||||
engine = MergeTree('date', ('date',))
|
||||
|
||||
|
|
@ -256,3 +266,31 @@ class Model4Buffer_changed(BufferModel, Model4_changed):
|
|||
@classmethod
|
||||
def table_name(cls):
|
||||
return 'model4buffer'
|
||||
|
||||
|
||||
class Model4_compressed(Model):
|
||||
|
||||
date = DateField()
|
||||
f3 = DateTimeField(codec='Delta,ZSTD(10)')
|
||||
f2 = StringField(codec='LZ4HC')
|
||||
|
||||
engine = MergeTree('date', ('date',))
|
||||
|
||||
@classmethod
|
||||
def table_name(cls):
|
||||
return 'model4'
|
||||
|
||||
|
||||
class Model2LowCardinality(Model):
|
||||
date = DateField()
|
||||
f1 = LowCardinalityField(Int32Field())
|
||||
f3 = LowCardinalityField(Float32Field())
|
||||
f2 = LowCardinalityField(StringField())
|
||||
f4 = LowCardinalityField(NullableField(StringField()))
|
||||
f5 = ArrayField(LowCardinalityField(UInt64Field()))
|
||||
|
||||
engine = MergeTree('date', ('date',))
|
||||
|
||||
@classmethod
|
||||
def table_name(cls):
|
||||
return 'mig'
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@ from infi.clickhouse_orm.database import Database
|
|||
from infi.clickhouse_orm.models import Model
|
||||
from infi.clickhouse_orm.fields import *
|
||||
from infi.clickhouse_orm.engines import *
|
||||
from infi.clickhouse_orm.utils import comma_join
|
||||
|
||||
from datetime import date, datetime
|
||||
|
||||
|
|
@ -13,7 +14,7 @@ from datetime import date, datetime
|
|||
class NullableFieldsTest(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db')
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
self.database.create_table(ModelWithNullable)
|
||||
|
||||
def tearDown(self):
|
||||
|
|
@ -95,14 +96,19 @@ class NullableFieldsTest(unittest.TestCase):
|
|||
ModelWithNullable(date_field='2016-08-30', null_str='', null_int=42, null_date=dt),
|
||||
ModelWithNullable(date_field='2016-08-30', null_str='nothing', null_int=None, null_date=None),
|
||||
ModelWithNullable(date_field='2016-08-31', null_str=None, null_int=42, null_date=dt),
|
||||
ModelWithNullable(date_field='2016-08-31', null_str=None, null_int=None, null_date=None)
|
||||
ModelWithNullable(date_field='2016-08-31', null_str=None, null_int=None, null_date=None, null_default=None)
|
||||
])
|
||||
|
||||
def _assert_sample_data(self, results):
|
||||
for r in results:
|
||||
print(r.to_dict())
|
||||
dt = date(1970, 1, 1)
|
||||
self.assertEqual(len(results), 4)
|
||||
self.assertIsNone(results[0].null_str)
|
||||
self.assertEqual(results[0].null_int, 42)
|
||||
self.assertEqual(results[0].null_default, 7)
|
||||
self.assertEqual(results[0].null_alias, 21)
|
||||
self.assertEqual(results[0].null_materialized, 420)
|
||||
self.assertEqual(results[0].null_date, dt)
|
||||
self.assertIsNone(results[1].null_date)
|
||||
self.assertEqual(results[1].null_str, 'nothing')
|
||||
|
|
@ -110,19 +116,27 @@ class NullableFieldsTest(unittest.TestCase):
|
|||
self.assertIsNone(results[2].null_str)
|
||||
self.assertEqual(results[2].null_date, dt)
|
||||
self.assertEqual(results[2].null_int, 42)
|
||||
self.assertEqual(results[2].null_default, 7)
|
||||
self.assertEqual(results[2].null_alias, 21)
|
||||
self.assertEqual(results[0].null_materialized, 420)
|
||||
self.assertIsNone(results[3].null_int)
|
||||
self.assertIsNone(results[3].null_default)
|
||||
self.assertIsNone(results[3].null_alias)
|
||||
self.assertIsNone(results[3].null_materialized)
|
||||
self.assertIsNone(results[3].null_str)
|
||||
self.assertIsNone(results[3].null_date)
|
||||
|
||||
def test_insert_and_select(self):
|
||||
self._insert_sample_data()
|
||||
query = 'SELECT * from $table ORDER BY date_field'
|
||||
fields = comma_join(ModelWithNullable.fields().keys())
|
||||
query = 'SELECT %s from $table ORDER BY date_field' % fields
|
||||
results = list(self.database.select(query, ModelWithNullable))
|
||||
self._assert_sample_data(results)
|
||||
|
||||
def test_ad_hoc_model(self):
|
||||
self._insert_sample_data()
|
||||
query = 'SELECT * from $db.modelwithnullable ORDER BY date_field'
|
||||
fields = comma_join(ModelWithNullable.fields().keys())
|
||||
query = 'SELECT %s from $db.modelwithnullable ORDER BY date_field' % fields
|
||||
results = list(self.database.select(query))
|
||||
self._assert_sample_data(results)
|
||||
|
||||
|
|
@ -133,5 +147,8 @@ class ModelWithNullable(Model):
|
|||
null_str = NullableField(StringField(), extra_null_values={''})
|
||||
null_int = NullableField(Int32Field())
|
||||
null_date = NullableField(DateField())
|
||||
null_default = NullableField(Int32Field(), default=7)
|
||||
null_alias = NullableField(Int32Field(), alias='null_int/2')
|
||||
null_materialized = NullableField(Int32Field(), alias='null_int*10')
|
||||
|
||||
engine = MergeTree('date_field', ('date_field',))
|
||||
|
|
|
|||
|
|
@ -3,17 +3,15 @@ from __future__ import unicode_literals, print_function
|
|||
import unittest
|
||||
|
||||
from infi.clickhouse_orm.database import Database
|
||||
from infi.clickhouse_orm.query import Q, F
|
||||
from infi.clickhouse_orm.query import Q
|
||||
from infi.clickhouse_orm.funcs import F
|
||||
from .base_test_with_data import *
|
||||
from datetime import date, datetime
|
||||
from enum import Enum
|
||||
|
||||
from logging import getLogger
|
||||
logger = getLogger('tests')
|
||||
|
||||
try:
|
||||
Enum # exists in Python 3.4+
|
||||
except NameError:
|
||||
from enum import Enum # use the enum34 library instead
|
||||
|
||||
|
||||
class QuerySetTestCase(TestCaseWithData):
|
||||
|
|
@ -31,6 +29,13 @@ class QuerySetTestCase(TestCaseWithData):
|
|||
self.assertEqual(count, expected_count)
|
||||
self.assertEqual(qs.count(), expected_count)
|
||||
|
||||
def test_prewhere(self):
|
||||
# We can't distinguish prewhere and where results, it affects performance only.
|
||||
# So let's control prewhere acts like where does
|
||||
qs = Person.objects_in(self.database)
|
||||
self.assertTrue(qs.filter(first_name='Connor', prewhere=True))
|
||||
self.assertFalse(qs.filter(first_name='Willy', prewhere=True))
|
||||
|
||||
def test_no_filtering(self):
|
||||
qs = Person.objects_in(self.database)
|
||||
self._test_qs(qs, len(data))
|
||||
|
|
@ -222,7 +227,7 @@ class QuerySetTestCase(TestCaseWithData):
|
|||
qs = Person.objects_in(self.database).order_by('first_name', 'last_name')
|
||||
# Try different page sizes
|
||||
for page_size in (1, 2, 7, 10, 30, 100, 150):
|
||||
# Iterate over pages and collect all intances
|
||||
# Iterate over pages and collect all instances
|
||||
page_num = 1
|
||||
instances = set()
|
||||
while True:
|
||||
|
|
@ -296,7 +301,7 @@ class QuerySetTestCase(TestCaseWithData):
|
|||
qs = Person.objects_in(self.database)
|
||||
qs = qs.filter(Q(first_name='a'), F('greater', Person.height, 1.7), last_name='b')
|
||||
self.assertEqual(qs.conditions_as_sql(),
|
||||
"first_name = 'a' AND greater(`height`, 1.7) AND last_name = 'b'")
|
||||
"(first_name = 'a') AND (greater(`height`, 1.7)) AND (last_name = 'b')")
|
||||
|
||||
def test_invalid_filter(self):
|
||||
qs = Person.objects_in(self.database)
|
||||
|
|
@ -417,6 +422,17 @@ class AggregateTestCase(TestCaseWithData):
|
|||
print(qs.as_sql())
|
||||
self.assertEqual(qs.count(), 1)
|
||||
|
||||
def test_aggregate_with_totals(self):
|
||||
qs = Person.objects_in(self.database).aggregate('first_name', count='count()').\
|
||||
with_totals().order_by('-count')[:5]
|
||||
print(qs.as_sql())
|
||||
result = list(qs)
|
||||
self.assertEqual(len(result), 6)
|
||||
for row in result[:-1]:
|
||||
self.assertEqual(2, row.count)
|
||||
|
||||
self.assertEqual(100, result[-1].count)
|
||||
|
||||
def test_double_underscore_field(self):
|
||||
class Mdl(Model):
|
||||
the__number = Int32Field()
|
||||
|
|
@ -463,9 +479,9 @@ class FuncsTestCase(TestCaseWithData):
|
|||
# Numeric args
|
||||
self.assertEqual(F('func', 1, 1.1, Decimal('3.3')).to_sql(), "func(1, 1.1, 3.3)")
|
||||
# Date args
|
||||
self.assertEqual(F('func', date(2018, 12, 31)).to_sql(), "func('2018-12-31')")
|
||||
self.assertEqual(F('func', date(2018, 12, 31)).to_sql(), "func(toDate('2018-12-31'))")
|
||||
# Datetime args
|
||||
self.assertEqual(F('func', datetime(2018, 12, 31)).to_sql(), "func('1546214400')")
|
||||
self.assertEqual(F('func', datetime(2018, 12, 31)).to_sql(), "func(toDateTime('1546214400'))")
|
||||
# Boolean args
|
||||
self.assertEqual(F('func', True, False).to_sql(), "func(1, 0)")
|
||||
# Null args
|
||||
|
|
|
|||
|
|
@ -36,9 +36,9 @@ class ReadonlyTestCase(TestCaseWithData):
|
|||
def _check_db_readonly_err(self, exc, drop_table=None):
|
||||
self.assertEqual(exc.code, 164)
|
||||
if drop_table:
|
||||
self.assertEqual(exc.message, 'Cannot drop table in readonly mode')
|
||||
self.assertTrue(exc.message.startswith('Cannot drop table in readonly mode'))
|
||||
else:
|
||||
self.assertEqual(exc.message, 'Cannot insert into table in readonly mode')
|
||||
self.assertTrue(exc.message.startswith('Cannot insert into table in readonly mode'))
|
||||
|
||||
def test_readonly_db_with_default_user(self):
|
||||
self._test_readonly_db('default')
|
||||
|
|
|
|||
32
tests/test_server_errors.py
Normal file
32
tests/test_server_errors.py
Normal file
|
|
@ -0,0 +1,32 @@
|
|||
from __future__ import unicode_literals
|
||||
import unittest
|
||||
|
||||
from infi.clickhouse_orm.database import ServerError
|
||||
|
||||
|
||||
class ServerErrorTest(unittest.TestCase):
|
||||
|
||||
def test_old_format(self):
|
||||
|
||||
code, msg = ServerError.get_error_code_msg("Code: 81, e.displayText() = DB::Exception: Database db_not_here doesn't exist, e.what() = DB::Exception (from [::1]:33458)")
|
||||
self.assertEqual(code, 81)
|
||||
self.assertEqual(msg, "Database db_not_here doesn't exist")
|
||||
|
||||
code, msg = ServerError.get_error_code_msg("Code: 161, e.displayText() = DB::Exception: Limit for number of columns to read exceeded. Requested: 11, maximum: 1, e.what() = DB::Exception\n")
|
||||
self.assertEqual(code, 161)
|
||||
self.assertEqual(msg, "Limit for number of columns to read exceeded. Requested: 11, maximum: 1")
|
||||
|
||||
|
||||
def test_new_format(self):
|
||||
|
||||
code, msg = ServerError.get_error_code_msg("Code: 164, e.displayText() = DB::Exception: Cannot drop table in readonly mode")
|
||||
self.assertEqual(code, 164)
|
||||
self.assertEqual(msg, "Cannot drop table in readonly mode")
|
||||
|
||||
code, msg = ServerError.get_error_code_msg("Code: 48, e.displayText() = DB::Exception: Method write is not supported by storage Merge")
|
||||
self.assertEqual(code, 48)
|
||||
self.assertEqual(msg, "Method write is not supported by storage Merge")
|
||||
|
||||
code, msg = ServerError.get_error_code_msg("Code: 60, e.displayText() = DB::Exception: Table default.zuzu doesn't exist.\n")
|
||||
self.assertEqual(code, 60)
|
||||
self.assertEqual(msg, "Table default.zuzu doesn't exist.")
|
||||
|
|
@ -13,8 +13,9 @@ from infi.clickhouse_orm.system_models import SystemPart
|
|||
|
||||
|
||||
class SystemTest(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db')
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
|
||||
def tearDown(self):
|
||||
self.database.drop_database()
|
||||
|
|
@ -38,7 +39,7 @@ class SystemPartTest(unittest.TestCase):
|
|||
BACKUP_DIRS = ['/var/lib/clickhouse/shadow', '/opt/clickhouse/shadow/']
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db')
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
self.database.create_table(TestTable)
|
||||
self.database.create_table(CustomPartitionedTable)
|
||||
self.database.insert([TestTable(date_field=date.today())])
|
||||
|
|
@ -54,6 +55,12 @@ class SystemPartTest(unittest.TestCase):
|
|||
return dirnames
|
||||
raise unittest.SkipTest('Cannot find backups dir')
|
||||
|
||||
def test_is_read_only(self):
|
||||
self.assertTrue(SystemPart.is_read_only())
|
||||
|
||||
def test_is_system_model(self):
|
||||
self.assertTrue(SystemPart.is_system_model())
|
||||
|
||||
def test_get_all(self):
|
||||
parts = SystemPart.get(self.database)
|
||||
self.assertEqual(len(list(parts)), 2)
|
||||
|
|
@ -62,7 +69,8 @@ class SystemPartTest(unittest.TestCase):
|
|||
parts = list(SystemPart.get_active(self.database))
|
||||
self.assertEqual(len(parts), 2)
|
||||
parts[0].detach()
|
||||
self.assertEqual(len(list(SystemPart.get_active(self.database))), 1)
|
||||
parts = list(SystemPart.get_active(self.database))
|
||||
self.assertEqual(len(parts), 1)
|
||||
|
||||
def test_get_conditions(self):
|
||||
parts = list(SystemPart.get(self.database, conditions="table='testtable'"))
|
||||
|
|
@ -101,6 +109,10 @@ class SystemPartTest(unittest.TestCase):
|
|||
# TODO Not tested, as I have no replication set
|
||||
pass
|
||||
|
||||
def test_query(self):
|
||||
SystemPart.objects_in(self.database).count()
|
||||
list(SystemPart.objects_in(self.database).filter(table='testtable'))
|
||||
|
||||
|
||||
class TestTable(Model):
|
||||
date_field = DateField()
|
||||
|
|
|
|||
45
tests/test_uuid_fields.py
Normal file
45
tests/test_uuid_fields.py
Normal file
|
|
@ -0,0 +1,45 @@
|
|||
from __future__ import unicode_literals
|
||||
import unittest
|
||||
from uuid import UUID
|
||||
from infi.clickhouse_orm.database import Database
|
||||
from infi.clickhouse_orm.fields import Int16Field, UUIDField
|
||||
from infi.clickhouse_orm.models import Model
|
||||
from infi.clickhouse_orm.engines import Memory
|
||||
|
||||
|
||||
class UUIDFieldsTest(unittest.TestCase):
|
||||
|
||||
def setUp(self):
|
||||
self.database = Database('test-db', log_statements=True)
|
||||
|
||||
def tearDown(self):
|
||||
self.database.drop_database()
|
||||
|
||||
def test_uuid_field(self):
|
||||
# Create a model
|
||||
class TestModel(Model):
|
||||
i = Int16Field()
|
||||
f = UUIDField()
|
||||
engine = Memory()
|
||||
self.database.create_table(TestModel)
|
||||
# Check valid values (all values are the same UUID)
|
||||
values = [
|
||||
'12345678-1234-5678-1234-567812345678',
|
||||
'{12345678-1234-5678-1234-567812345678}',
|
||||
'12345678123456781234567812345678',
|
||||
'urn:uuid:12345678-1234-5678-1234-567812345678',
|
||||
b'\x12\x34\x56\x78'*4,
|
||||
(0x12345678, 0x1234, 0x5678, 0x12, 0x34, 0x567812345678),
|
||||
0x12345678123456781234567812345678,
|
||||
UUID(int=0x12345678123456781234567812345678),
|
||||
]
|
||||
for index, value in enumerate(values):
|
||||
rec = TestModel(i=index, f=value)
|
||||
self.database.insert([rec])
|
||||
for rec in TestModel.objects_in(self.database):
|
||||
self.assertEqual(rec.f, UUID(values[0]))
|
||||
# Check invalid values
|
||||
for value in [None, 'zzz', -1, '123']:
|
||||
with self.assertRaises(ValueError):
|
||||
TestModel(i=1, f=value)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user