Commit Graph

423 Commits

Author SHA1 Message Date
Daniele Varrazzo
828415d476 Typo: composible -> composable 2017-01-01 06:32:18 +01:00
Daniele Varrazzo
ad2643266f Fixed sql.compose with no args and added tests 2017-01-01 06:26:54 +01:00
Daniele Varrazzo
8c020ca47a Fixed sql.Composed representation 2017-01-01 06:26:42 +01:00
Daniele Varrazzo
600416aafc Fixed sql stuff in Py3 2017-01-01 05:59:21 +01:00
Daniele Varrazzo
c4a67fc1c1 Added sql.compose() implementation 2017-01-01 05:23:42 +01:00
Daniele Varrazzo
f11e6d82b0 Added basic sql module implementation 2017-01-01 05:23:15 +01:00
Daniele Varrazzo
fad5100079 Adding some boilerplate for the new module 2017-01-01 03:53:08 +01:00
Daniele Varrazzo
21f38a4c07 Don't try to write bytes in the LoggingConnection file
Close #483
2016-12-29 22:42:25 +01:00
Tim Graham
35b4a01b6d Fix "invalid escape sequence" warning in Python 3.6
http://bugs.python.org/issue27364
2016-12-25 20:43:29 +01:00
Daniele Varrazzo
643ba70bad Added ipaddress objects conversion
Close #387
2016-10-11 04:54:41 +01:00
Daniele Varrazzo
86198c1c21 inet adapters deprecated
Close #343
2016-10-11 02:17:56 +01:00
Daniele Varrazzo
91d2158de7 Python source cleanup using flake8 2016-10-11 00:11:55 +01:00
Daniele Varrazzo
78649f8e90 Dropped use of b() "macro" and 2to3 fixer
Just use the b"" strings syntax supported from python 2.6.
2016-08-15 01:56:36 +01:00
Daniele Varrazzo
1d950748af Merge branch 'replication-protocol' 2016-08-14 21:09:54 +01:00
Jonathan Ross Rogers
cde19c4d59 Make Range pickleable 2016-08-07 02:38:52 +01:00
Daniele Varrazzo
2a4d6027a4 Merge branch 'master' into replication-protocol
Conflicts:
	tests/testconfig.py
2016-08-07 01:53:21 +01:00
Daniele Varrazzo
90ee1ebba5 errorcodes map updated to PostgreSQL 9.5. 2016-07-01 20:14:30 +01:00
Oleksandr Shulgin
b21c8f7a4e Move replication-related imports to extras.py 2016-03-08 18:52:29 +01:00
Oleksandr Shulgin
da6e061ee8 Use python-defined make_dsn() for ReplicationConnection class 2016-03-08 18:52:21 +01:00
Oleksandr Shulgin
cb7032554e Merge branch 'master' into feature/replication-protocol-c-connection-object 2016-03-04 10:52:10 +01:00
Daniele Varrazzo
c9fd828f8a Allow make_dsn to take no parameter
The behaviour of connect() is unchanged: either dsn or params must be
specified.
2016-03-03 17:09:15 +00:00
Daniele Varrazzo
7aab934ae5 Validate output result from make_dsn()
The output is not necessarily munged anyway: if no keyword is passed,
validate the input but return it untouched.
2016-03-03 17:09:15 +00:00
Daniele Varrazzo
6893295a87 Added docs about make_dsn
connect() docs updated to document the arguments merging.
2016-03-03 17:09:15 +00:00
Daniele Varrazzo
2c55a1bd53 Verify that the dsn is not manipulated by make_dsn if not necessary 2016-03-03 15:07:38 +00:00
Daniele Varrazzo
1c4523f0ac Implementation of make_dsn in Python
This is equivalent to what proposed in #363, but with a much simpler
implementation.
2016-03-03 04:33:59 +00:00
Federico Di Gregorio
b737757eac Merge pull request #375 from kwotuveang3k4bk/patch-1
Update psycopg1.py
2016-01-31 12:55:52 +01:00
Daniele Varrazzo
5fd0f6c4ee Fixed race condition on import in errorcodes.lookup
Fixes #382.
2015-12-16 12:03:10 +00:00
Jan Janßen
b3def74002 Update psycopg1.py 2015-11-10 17:02:59 +01:00
Oleksandr Shulgin
fbcf99ad07 Move replication connection to C level. 2015-10-27 18:21:24 +01:00
Oleksandr Shulgin
433fb957cb Merge branch 'feature/connect2' into feature/replication-protocol 2015-10-27 17:37:18 +01:00
Oleksandr Shulgin
7aba8b3ed0 Rework psycopg2.connect() interface. 2015-10-27 17:35:57 +01:00
Oleksandr Shulgin
e69dafbecc Move the decode parameter to start_replication().
It makes more sense this way, because otherwise it must be passed to every call
of `read_message()`.
2015-10-23 11:31:55 +02:00
Oleksandr Shulgin
23abe4f501 Add quick start to the replication doc, minor doc fixes. 2015-10-20 12:36:13 +02:00
Oleksandr Shulgin
0bb81fc848 Properly subclass ReplicationCursor on C level. 2015-10-19 20:00:39 +02:00
Oleksandr Shulgin
4ab7cf0157 Replace stop_replication with requirement for an exception. 2015-10-19 15:42:42 +02:00
Oleksandr Shulgin
cf4f2411bf Fix async replication and test. 2015-10-15 18:01:43 +02:00
Oleksandr Shulgin
d14fea31a3 Use quote_ident from psycopg2.extensions 2015-10-15 12:56:21 +02:00
Oleksandr Shulgin
8e518d4954 Merge branch 'master' into feature/replication-protocol 2015-10-15 12:27:43 +02:00
Oleksandr Shulgin
9295bce154 Add psycopg2.extensions.quote_ident. 2015-10-14 17:00:25 +02:00
Oleksandr Shulgin
6ad299945f Remove IDENTIFY_SYSTEM wrapper method (it can't work with async anyway). 2015-10-13 18:05:33 +02:00
Oleksandr Shulgin
0233620c26 Rework replication connection/cursor classes 2015-10-01 19:33:27 +02:00
Oleksandr Shulgin
cac83da5db Use parse_dsn in ReplicationConnectionBase 2015-10-01 19:33:24 +02:00
Oleksandr Shulgin
95ee218c6d Update replication connection/cursor interface and docs. 2015-10-01 19:33:20 +02:00
Oleksandr Shulgin
937a7a9024 Cleanup start replication wrt. slot type a bit. 2015-10-01 19:33:16 +02:00
Oleksandr Shulgin
862eda10c2 Merge remote-tracking branch 'origin/master' into repl 2015-10-01 19:29:17 +02:00
Daniele Varrazzo
f635547ec6 The wait_select callback can cancel a query using Ctrl-C
Fixes #333.
2015-10-01 15:26:13 +01:00
Daniele Varrazzo
9e6c3322d8 Fixed PersistentConnectionPool on Python 3
Fixes ticket #348.
2015-10-01 14:44:14 +01:00
Oleksandr Shulgin
058db56430 Merge remote-tracking branch 'zalando/feature/replication-protocol' into feature/replication-protocol 2015-06-30 10:40:52 +02:00
Oleksandr Shulgin
61e52ce879 Rework replication protocol
This change exposes lower level functions for operating the
(logical) replication protocol, while keeping the high-level
start_replication function that does all the job for you in
case of a synchronous connection.

A number of other changes and fixes are put into this commit.
2015-06-30 10:38:18 +02:00
Oleksandr Shulgin
e3c3a2c19e Merge branch 'master' into feature/replication-message-object
Conflicts:
	lib/extensions.py
2015-06-30 10:30:32 +02:00
Oleksandr Shulgin
35a3262fe3 Expose ReplicationMessage type in extras 2015-06-11 12:20:52 +02:00
Oleksandr Shulgin
1ac385d1fb Fix logical decoding plugin options adaptation on python3 2015-06-10 13:39:35 +02:00
Oleksandr Shulgin
453830f80c Add ReplicationMessage object 2015-06-05 17:44:09 +02:00
Oleksandr Shulgin
44b705f88f Improve identify_system: don't hardcode column names 2015-06-02 16:52:48 +02:00
Oleksandr Shulgin
cc08e14162 Merge branch 'master' into feature/parse-dsn
Conflicts:
	lib/extensions.py
2015-06-02 12:42:03 +02:00
Oleksandr Shulgin
4bb6f9cef2 Add libpq version discovery 2015-06-01 18:05:11 +02:00
Oleksandr Shulgin
6a2f21aa14 Move parse_dsn to extensions, add tests 2015-06-01 15:11:12 +02:00
Oleksandr Shulgin
e32e1b834e Add support for streaming replication protocol
Introduce ReplicationConnection and ReplicationCursor classes, that
incapsulate initiation of special type of PostgreSQL connection and
handling of special replication commands only available in this special
connection mode.

The handling of stream of replication data from the server is modelled
largely after the existing support for "COPY table TO file" command and
pg_recvlogical tool supplied with PostgreSQL (though, it can also be
used for physical replication.)
2015-06-01 11:45:04 +02:00
Oleksandr Shulgin
6c57e4a648 Add parse_dsn module function
Calls PQconninfoParse to parse the dsn into a list of keyword and value
structs, then constructs a dictionary from that.  Can be useful when one
needs to alter some part of the the connection string reliably, but
doesn't want to get into all the details of parsing a dsn string:
quoting, URL format, etc.
2015-06-01 10:16:07 +02:00
andrew deryabin
41639c7610 Fixed MinTimeLoggingCursor.callproc() 2015-05-03 10:30:11 +01:00
Daniele Varrazzo
569fd0975b Python 3.1 bytes.decode() doesn't support keyword arguments
Sucker.
2015-02-08 19:43:09 +00:00
Daniele Varrazzo
7ea56b112e Make Column picklable on Python >= 3.3
Also expose the type from the extensions module, not from the main
module.
2015-02-08 11:27:10 +00:00
Owen Raccuglia
5af5fb4cc6 Allow pickling of cursor.description
This is for people using dtuple.py; a dtuple.DatabaseTuple instance
keeps a reference to cursor.description, which is not picklable because
psycopg2 doesn't export the Column namedtuple it uses.

This commit exports the Column namedtuple, and includes a test to verify
the pickle/unpickle works after exporting Column.
2015-02-08 02:31:33 +00:00
Erik Lee
e9f54a2d6e Correct exausted -> exhausted typo 2014-11-17 17:01:00 +00:00
Daniele Varrazzo
6705e4051d Dropped creation of errcodes with missing spec field
On further inspection these names are just aliases for values already
defined: we don't need the duplication.
2014-08-28 02:17:57 +01:00
Daniele Varrazzo
41a083cec3 Convert pool arguments to int
Failing to do so may cause dangerous misbehaviours such as an unbounded
pool (because of lame comparison operators in Python 2).

Fix ticket #220.
2014-08-13 02:39:16 +01:00
Daniele Varrazzo
9d547469b8 Add register_default_jsonb() and register the type 2014-08-13 02:02:01 +01:00
Daniele Varrazzo
6bca443e37 Added name param to register_json() 2014-08-13 02:01:55 +01:00
Daniele Varrazzo
40dca9924d Add a few missing errcodes
They are used in the code but not defined in the SGML docs so the script
failed to parse them.
2014-07-31 13:34:53 +01:00
Daniele Varrazzo
283dbccf56 Merge branch 'range_sort' 2014-02-22 23:02:19 +00:00
Daniele Varrazzo
dd9e476353 Fixed error message on range parsing failed 2014-02-22 23:02:07 +00:00
Daniele Varrazzo
8937c635df Hardcode the list of attributes to be used in comparison
Comparing Range subclasses may lead to surprises.
2014-02-22 21:52:44 +00:00
Daniele Varrazzo
4545d1636c Added implementation for Range gt and ge operators
Using a common implementation for all the operators. Note that lt is the
one used by sort so it's nice it's the fastest.
2014-02-22 21:51:28 +00:00
Daniele Varrazzo
6192a4fb17 Added str() for the Json adapter
Fixes ticket #191.
2014-02-22 20:45:35 +00:00
Chris Withers
e60266c4c5 New implementation of Range sorting that works for Python 2.5 to 3.3, at least. 2014-02-18 20:55:00 +00:00
Chris Withers
d469c32503 Provide a stable and consistent sort order for Range objects.
This matches postgres server-side behaviour and helps client applications that need to sort based on the primary key of tables where the primary key is or contains a range.
2014-02-12 08:11:59 +00:00
Chris Withers
28276e3eb1 cater for comparison of subclasses 2013-05-26 22:20:07 +01:00
Chris Withers
b6a9e0ffaf raising an exception here rather than returning False causes problems with SQLAlchemy's internal state tracking 2013-05-26 21:58:39 +01:00
Chris Withers
8bb44f3444 more useful error message when comparing ranges with non-ranges 2013-05-26 21:20:40 +01:00
Piotr Kasprzyk
31b6ec63f8 Fix multiple misspellings 2013-04-26 09:59:40 +01:00
Daniele Varrazzo
fc2ca0d2e9 Make sure to return a bytes string from numeric range adapter 2013-04-21 20:30:50 +01:00
Daniele Varrazzo
711c092a79 The UUID adapter returns bytes instead of str in Python 3
Also added __conform__ method to the adapter.
2013-04-07 22:19:04 +01:00
Daniele Varrazzo
884a7f7db6 A couple of typos fixed 2013-04-07 16:05:36 +01:00
Daniele Varrazzo
2b554937f2 Dropped __all__ from modules
They were only used to generate docs with Epydoc, now largely forgotten.

Imports in extras cleaned up to expose the API only.
2013-04-07 02:59:30 +01:00
Daniele Varrazzo
d5d6a1f4c7 Enable by default the range typecasters
Otherwise it would have been enabled importing psycopg2.extras,
which is a surprising behaviour.
2013-04-07 02:37:55 +01:00
Daniele Varrazzo
9e15f54fe8 Added cursor_factory connection attribute and connect() parameter 2013-04-07 02:30:12 +01:00
Daniele Varrazzo
b6873ee1ab Dropped support for Python 2.4 2013-03-20 23:40:13 +00:00
Daniele Varrazzo
97311967e8 Merge branch 'diagnostics' into devel 2013-03-18 02:21:09 +00:00
Daniele Varrazzo
9e79112e25 Expose the Diagnostics object in the extensions module 2013-03-17 23:58:10 +00:00
Daniele Varrazzo
06bfa801f4 Fixed range adaptation on Python 3 2013-03-16 22:12:41 +00:00
Daniele Varrazzo
e1ff432f4c Merge branch 'dead-bytes' into devel 2013-03-16 16:25:17 +00:00
Daniele Varrazzo
6df6e6adfe Fixed pickling of DictRow objects too 2012-12-11 01:10:45 +00:00
Daniele Varrazzo
99bedd1bb2 Fixed pickling of RealDictRow objects 2012-12-10 23:54:25 +00:00
Daniele Varrazzo
27cd6c4880 Added specific pool implementation for ZPsycopgDA
The implementation is based on psycopg 2.4, which should be less broken
(zope-wise) of the current one.

Instantiating psycopg2.pool.PersistentConnectionPool now raises a warning.

This should fix ticket #123, #125. The issue of the reset on
set_client_encoding() is still present but that's always been there and I'm no
good at fixing it.
2012-12-04 00:30:58 +00:00
Daniele Varrazzo
9a031db8b9 Fixed empty strings handling in composite caster
Closes ticket #141.
2012-12-03 14:19:09 +00:00
Daniele Varrazzo
2a9e5c7203 Dropped configuration of unused logger inside the pool module 2012-12-03 00:39:47 +00:00
Daniele Varrazzo
1feb179fba Fixed pickling of FixedOffsetTimezone objects
I have also verified that the fixed class can unpickle instance pickled with
the buggy one and viceversa.

Fixes ticket #135.
2012-10-21 21:47:32 +01:00
Daniele Varrazzo
a33c0670fd More idiomatic way to call FixedOffsetTimezone.__new__ superclass 2012-10-21 21:16:52 +01:00
Daniele Varrazzo
f5f2e2c092 Dropped redundant call to FixedOffsetTimezone.__init__ 2012-10-21 21:12:02 +01:00
Daniele Varrazzo
9f9da182f1 Using super() in the connection/cursor subclasses
This opens to collaborative subclassing (e.g. you may want to have a
logging namedtuple cursor...)
2012-09-28 02:51:58 +01:00
Daniele Varrazzo
4244d5953a Merge branch 'range-type' into devel 2012-09-27 00:48:05 +01:00
Daniele Varrazzo
dda24f082f Merge branch 'json' into devel 2012-09-27 00:41:04 +01:00
Daniele Varrazzo
33043cd038 Merge branch 'composite-custom' into devel 2012-09-27 00:38:00 +01:00
Daniele Varrazzo
bc1d2f5d3a Merge remote-tracking branch 'github/connect-keywords' into devel 2012-09-26 13:15:33 +01:00
Daniele Varrazzo
20d3d0f66d Raise TypeError instead of InterfaceError on bad params on connect()
TypeError is the standard Python error raised in this case:

    $ python -c "(lambda a: None)(b=10)"
    TypeError: <lambda>() got an unexpected keyword argument 'b'

We only used to raise InterfaceError when connect was used without
any parameter at all, so it's hard to think a program depending on
that design. Furthermore the function has always raised (and still
does) OperationalError too, if the bad argument is detected by the
libpq, and that cannot be changed because we can't tell the
difference from a normal connection error.
2012-09-26 11:55:21 +01:00
Daniele Varrazzo
cf3c6f86ff Improved error message on connect when kwargs are passed together with dns 2012-09-26 11:47:06 +01:00
Daniele Varrazzo
cd316a94f1 Dropped quirks in connection arguments handling
Now connect() raises an exception instead of swallowing keyword arguments
when a connection string is specified as well

Closes ticket #131.
2012-09-25 23:46:46 +01:00
Daniele Varrazzo
b894539007 Fixed json doc error 2012-09-25 00:12:57 +01:00
Daniele Varrazzo
b8b669611e More helpful error messasge on Range order attempts 2012-09-25 00:07:08 +01:00
Daniele Varrazzo
7b1973354f Fixed SQL_IN when getquoted() is called without prepare() 2012-09-24 16:55:01 +01:00
Daniele Varrazzo
71e2f190c2 Json documentation improved 2012-09-24 11:51:35 +01:00
Daniele Varrazzo
a3418052e9 Don't create/register a json array typecaster if no oid provided 2012-09-24 11:23:09 +01:00
Daniele Varrazzo
c756d580f2 Added documentation for range types and adaptation 2012-09-24 00:49:44 +01:00
Daniele Varrazzo
b1953640d2 Don't need to implement __new__ to make an immutable class 2012-09-24 00:49:02 +01:00
Daniele Varrazzo
a858987844 Fixed search of types into schemas.
We don't need to look for stuff implicitly into pg_catalog as all
the builtin ranges are already registered. So just search into
'public' if the schema is not specified.
2012-09-24 00:49:02 +01:00
Daniele Varrazzo
841ddaba87 Range objects cannot be ordered 2012-09-23 22:54:50 +01:00
Daniele Varrazzo
25ef540aa3 Range objects are nonzero when not empty 2012-09-23 22:43:23 +01:00
Daniele Varrazzo
a96a4349ed Range objects are immutable and hashable 2012-09-23 22:40:13 +01:00
Daniele Varrazzo
e002ea5937 Dropped Range._empty attribute
We can do with just _bounds: it will make eq and hash easier to
implement in a consistent way
2012-09-23 22:10:33 +01:00
Daniele Varrazzo
d2cee6f9ad Added in operator for ranges 2012-09-23 22:01:39 +01:00
Daniele Varrazzo
94c6353d55 NumberRange renamed to NumericRange
I was avoiding Numeric to avoid conflicting with the 'numeric'
Postgres type, which is an alias for 'decimal'. But now that there
is a single numeric range I can use the preferred name
2012-09-23 21:11:06 +01:00
Daniele Varrazzo
45cbcc0713 Dropped Range classes for specific numeric types 2012-09-23 21:08:18 +01:00
Daniele Varrazzo
5e7c1d0b51 Added first implementation of Range type, adapter, typecaster 2012-09-23 21:03:36 +01:00
Daniele Varrazzo
9949e04c70 Added schema attribute to CompositeCaster 2012-09-22 15:10:40 +01:00
Daniele Varrazzo
59151886a0 Info about hstore versions history moved from code to docs 2012-09-22 02:10:58 +01:00
Daniele Varrazzo
26cfdc1234 Info about versions history moved from code to docs 2012-09-22 02:08:21 +01:00
Daniele Varrazzo
fa9393b587 Added documentation about CompositeCaster subclassing 2012-09-22 02:01:04 +01:00
Daniele Varrazzo
1b2c2c34b6 Make CompositeCaster easier to subclass 2012-09-22 01:46:53 +01:00
Daniele Varrazzo
7de8611607 errorcodes map updated to PostgreSQL 9.2 2012-09-21 01:59:02 +01:00
Daniele Varrazzo
526e270934 Use namedtuple._make in NamedTupleCursor and CompositeCaster
Makes things more natural as _make has the same signature of the tuple (see
_ctor in CompositeCaster) and is probably more efficient with less
intermediate sequences to build.
2012-09-20 16:27:50 +01:00
Daniele Varrazzo
5645e7adef Pasto fixed 2012-09-20 03:44:50 +01:00
Daniele Varrazzo
9b2ad7abb5 Fixed json typecaster with NULL input 2012-09-20 00:39:34 +01:00
Daniele Varrazzo
7386b8327c Dropped keywords passthrough in Json adapter
Pass a dumps function instead. Allow customizing by either arg passing or
subclassing.

The basic Json class now raises ImportError on getquoted() if json is not
available, thus allowing using a customized Json subclass even when the json
module is not available.
2012-09-19 16:32:57 +01:00
Daniele Varrazzo
d963b478e2 Added register_default_json() function
Register a typecaster for PostgreSQL 9.2 json.
2012-09-19 15:49:00 +01:00
Daniele Varrazzo
26d71b4cba First parameter of register_json defaults to None 2012-09-19 15:31:28 +01:00
Daniele Varrazzo
024f0dbada Added json typecaster 2012-09-19 04:26:35 +01:00
Daniele Varrazzo
b8e7f02256 Added Json adapter 2012-09-19 04:12:20 +01:00
Daniele Varrazzo
21d323d2c8 Fixed register_hstore and register_composite with non-dbapi objects
Closed ticket #114.
2012-08-14 23:26:17 +01:00
Daniele Varrazzo
ba1fe6fff6 Fixed superclass methods call.
Methods execute() and callproc() in DictCursor and RealDictCursor should
call DictCursorBase methods, not _cursor's ones.

Reported by Alexey Luchko on the ML.
2012-05-08 15:48:07 +01:00
Daniele Varrazzo
c86ca7687f Fixed cursor() arguments propagation to other connection classes 2012-04-11 17:59:16 +01:00
Corry Haines
095cce5605 Allow user to override connection factory cursors
Prior to this change, using a extras.connection_factory would not allow
any other cursor to be used on that connection. It was set in stone.

This change allows all cursor options to pass through and override the
connection factory behaviors. This allows a connection_factory to be
dropped into existing code with no disruption.

This change also standardizes the extras.connection_factories to have
the same behavior and all pass through *args and **kwargs.
2012-04-11 17:36:04 +01:00
Marti Raudsepp
b97599166e Update all links to PostgreSQL docs to the current version.
I also checked all links and anchors to make sure they're still valid.
2012-02-28 18:28:07 +02:00
Daniele Varrazzo
0c337a2029 Added support for inet array 2012-02-23 23:56:55 +00:00
Daniele Varrazzo
36b6c80ed1 register_uuid takes more iterables types as oids argument
Also added docs for the function parameters.
2012-02-23 23:51:28 +00:00
Daniele Varrazzo
b8597dc1d3 Fixed NamedTupleCursor rownumber during iteration.
The correction is similar to the other one for the other subclasses.

Also added tests for rowcount and rownumber during different fetch styles.
Just in case.
2012-02-23 22:58:58 +00:00
Daniele Varrazzo
ebec522a07 Fixed rownumber for cursor subclasses during iterations
Regression introduced to fix ticket #80. Don't use fetchmany to get the
chunks of values. I did it that way because I was ending up into infinite
recursion calling __iter__ from __iter__: the solution has been the
"while 1: yield next()" idiom.
2012-02-23 22:55:13 +00:00
Daniele Varrazzo
dca6cffd6e Dropped custom array parsing for UUID[]
Use the C generic array parsing exposed by new_array_type().
2012-02-23 14:41:55 +00:00
Daniele Varrazzo
f782470d71 Parens don't need escaping in regexp char classes 2012-02-23 14:41:51 +00:00
Daniele Varrazzo
1332d4a0d8 Fixed never raised exception in composite parsing 2012-02-23 14:41:46 +00:00
Menno Smits
bca7200b3f Cache FixedOffsetTimezone instances
Avoid creating new a new FixedOffsetTimezone instance if one with the
same offset and name has been created before. This will save memory
when returning many rows containing "timestamp with timezone" columns,
and also improves comparability.
2012-01-30 13:27:40 +00:00