Change Log ========== Unreleased ---------- - Support for model constraints - Support for data skipping indexes - Support for mutations: `QuerySet.update` and `QuerySet.delete` - Added functions for working with external dictionaries - Support FINAL for `ReplacingMergeTree` (chripede) - Added `DateTime64Field` (NiyazNz) - Make `DateTimeField` and `DateTime64Field` timezone-aware (NiyazNz) **Backwards incompatibile changes** Previously, `DateTimeField` always converted its value from the database timezone to UTC. This is no longer the case: the field's value now preserves the timezone it was defined with, or if not specified - the database's global timezone. This change has no effect if your database timezone is set UTC. v2.0.1 ------ - Remove unnecessary import of `six` v2.0.0 ------ - Dropped support for Python 2.x - New flexible syntax for database expressions and functions - Expressions as default values for model fields - Support for IPv4 and IPv6 fields - Automatic generation of models by inspecting existing tables - Convenient ways to import ORM classes See [What's new in version 2](docs/whats_new_in_version_2.md) for details. v1.4.0 ------ - Added primary_key parameter to MergeTree engines (M1hacka) - Support negative enum values (Romamo) v1.3.0 ------ - Support LowCardinality columns in ad-hoc queries - Support for LIMIT BY in querysets (utapyngo) 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 ------ - Bug fix: `QuerySet.count()` ignores slicing - Bug fix: wrong parentheses when building queries using Q objects - Support Decimal fields - Added `Database.add_setting` method v1.0.2 ---------- - Include alias and materialized fields in queryset results - Check for database existence, to allow delayed creation - Added `Database.does_table_exist` method - Support for `IS NULL` and `IS NOT NULL` in querysets (kalombos) v1.0.1 ------ - NullableField: take extra_null_values into account in `validate` and `to_python` - Added `Field.isinstance` method - Validate the inner field passed to `ArrayField` v1.0.0 ------ - Add support for compound filters with Q objects (desile) - Add support for BETWEEN operator (desile) - Distributed engine support (tsionyx) - `_fields` and `_writable_fields` are OrderedDicts - note that this might break backwards compatibility (tsionyx) - Improve error messages returned from the database with the `ServerError` class (tsionyx) - Added support for custom partitioning (M1hacka) - Added attribute `server_version` to Database class (M1hacka) - Changed `Engine.create_table_sql()`, `Engine.drop_table_sql()`, `Model.create_table_sql()`, `Model.drop_table_sql()` parameter to db from db_name (M1hacka) - Fix parsing of datetime column type when it includes a timezone (M1hacka) - Rename `Model.system` to `Model._system` to prevent collision with a column that has the same name - Rename `Model.readonly` to `Model._readonly` to prevent collision with a column that has the same name - The `field_names` argument to `Model.to_tsv` is now mandatory - Improve creation time of model instances by keeping a dictionary of default values - Fix queryset bug when field name contains double underscores (YouCanKeepSilence) - Prevent exception when determining timezone of old ClickHouse versions (vv-p) v0.9.8 ------ - Bug fix: add field names list explicitly to Database.insert method (anci) - Added RunPython and RunSQL migrations (M1hacka) - Allow ISO-formatted datetime values (tsionyx) - Show field name in error message when invalid value assigned (tsionyx) - Bug fix: select query fails when query contains '$' symbol (M1hacka) - Prevent problems with AlterTable migrations related to field order (M1hacka) - Added documentation about custom fields. v0.9.7 ------ - Add `distinct` method to querysets - Add `AlterTableWithBuffer` migration operation - Support Merge engine (M1hacka) v0.9.6 ------ - Fix python3 compatibility (TvoroG) - Nullable arrays not supported in latest ClickHouse version - system.parts table no longer includes "replicated" column in latest ClickHouse version v0.9.5 ------ - Added `QuerySet.paginate()` - Support for basic aggregation in querysets v0.9.4 ------ - Migrations: when creating a table for a `BufferModel`, create the underlying table too if necessary v0.9.3 ------ - Changed license from PSF to BSD - Nullable fields support (yamiou) - Support for queryset slicing v0.9.2 ------ - Added `ne` and `not_in` queryset operators - Querysets no longer have a default order unless `order_by` is called - Added `autocreate` flag to database initializer - Fix some Python 2/3 incompatibilities (TvoroG, tsionyx) - To work around a JOIN bug in ClickHouse, `$table` now inserts only the table name, and the database name is sent in the query params instead v0.9.0 ------ - Major new feature: building model queries using QuerySets - Refactor and expand the documentation - Add support for FixedString fields - Add support for more engine types: TinyLog, Log, Memory - Bug fix: Do not send readonly=1 when connection is already in readonly mode v0.8.2 ------ - Fix broken Python 3 support (M1hacka) v0.8.1 ------ - Add support for ReplacingMergeTree (leenr) - Fix problem with SELECT WITH TOTALS (pilosus) - Update serialization format of DateTimeField to 10 digits, zero padded (nikepan) - Greatly improve performance when inserting large strings (credit to M1hacka for identifying the problem) - Reduce memory footprint of Database.insert() v0.8.0 ------ - Always keep datetime fields in UTC internally, and convert server timezone to UTC when parsing query results - Support for ALIAS and MATERIALIZED fields (M1ha) - Pagination: passing -1 as the page number now returns the last page - Accept datetime values for date fields (Zloool) - Support readonly mode in Database class (tswr) - Added support for the Buffer table engine (emakarov) - Added the SystemPart readonly model, which provides operations on partitions (M1ha) - Added Model.to_dict() that converts a model instance to a dictionary (M1ha) - Added Database.raw() to perform arbitrary queries (M1ha) v0.7.1 ------ - Accept '0000-00-00 00:00:00' as a datetime value (tsionyx) - Bug fix: parse_array fails on int arrays - Improve performance when inserting many rows v0.7.0 ------ - Support array fields - Support enum fields v0.6.3 ------ - Python 3 support