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path: root/test/dialect/postgresql/test_query.py
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* Add support for server side cursors to mysqldb and pymysqlRoman Podoliaka2016-11-101-133/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows to skip buffering of the results on the client side, e.g. the following snippet: table = sa.Table( 'testtbl', sa.MetaData(), sa.Column('id', sa.Integer, primary_key=True), sa.Column('a', sa.Integer), sa.Column('b', sa.String(512)) ) table.create(eng, checkfirst=True) with eng.connect() as conn: result = conn.execute(table.select().limit(1)).fetchone() if result is None: for _ in range(1000): conn.execute( table.insert(), [{'a': random.randint(1, 100000), 'b': ''.join(random.choice(string.ascii_letters) for _ in range(100))} for _ in range(1000)] ) with eng.connect() as conn: for row in conn.execution_options(stream_results=True).execute(table.select()): pass now uses ~23 MB of memory instead of ~327 MB on CPython 3.5.2 and PyMySQL 0.7.9. psycopg2 implementation and execution options (stream_results, server_side_cursors) are reused. Change-Id: I4dc23ce3094f027bdff51b896b050361991c62e2
* Change autoincrement compileerror to a warningMike Bayer2016-10-071-33/+48
| | | | | | | | Users are complaining that IntegrityError is no longer raised. Change-Id: I0855d5b7a98d4338f0910501b6e6d404ba33634d Fixes: #3216
* Deprecate FromClause.count()Mike Bayer2016-06-141-17/+17
| | | | | | | | | | | count() here is misleading in that it not only counts from an arbitrary column in the table, it also does not make accommodations for DISTINCT, JOIN, etc. as the ORM-level function does. Core should not be attempting to provide a function like this. Change-Id: I9916fc51ef744389a92c54660ab08e9695b8afc2 Fixes: #3724
* - Add support for PostgreSQL with PyGreSQLChristoph Zwerschke2016-04-151-0/+1
| | | | | Change-Id: I040b75ff3b4110e7e8b26442a4eb226ba8c26715 Pull-request: https://github.com/zzzeek/sqlalchemy/pull/234
* - modernize some very old global-engine tests w/ bad teardownsMike Bayer2015-10-111-238/+260
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* - repair flake8 issuesMike Bayer2015-10-111-44/+49
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* - repair laziness about setting time zone here, which is leakingMike Bayer2015-10-111-9/+17
| | | | out depending on connection pool state
* - The system by which a :class:`.Column` considers itself to be anMike Bayer2015-10-071-30/+35
| | | | | | | | | | | | | | | | | "auto increment" column has been changed, such that autoincrement is no longer implicitly enabled for a :class:`.Table` that has a composite primary key. In order to accommodate being able to enable autoincrement for a composite PK member column while at the same time maintaining SQLAlchemy's long standing behavior of enabling implicit autoincrement for a single integer primary key, a third state has been added to the :paramref:`.Column.autoincrement` parameter ``"auto"``, which is now the default. fixes #3216 - The MySQL dialect no longer generates an extra "KEY" directive when generating CREATE TABLE DDL for a table using InnoDB with a composite primary key with AUTO_INCREMENT on a column that isn't the first column; to overcome InnoDB's limitation here, the PRIMARY KEY constraint is now generated with the AUTO_INCREMENT column placed first in the list of columns.
* - Repaired some typing and test issues related to the pypyMike Bayer2015-06-051-1/+1
| | | | | | | | | psycopg2cffi dialect, in particular that the current 2.7.0 version does not have native support for the JSONB type. The version detection for psycopg2 features has been tuned into a specific sub-version for psycopg2cffi. Additionally, test coverage has been enabled for the full series of psycopg2 features under psycopg2cffi. fixes #3439
* - additional test adjustments for pypy / psycopg2cffi. ThisMike Bayer2015-01-261-15/+17
| | | | | | | | | | consists mainly of adjusting fixtures to ensure connections are closed explicitly. psycopg2cffi also handles unicode bind parameter names differently than psycopg2, and seems to possibly have a little less control over floating point values at least in one test which is marked as a "fail", though will see if it runs differently on linux than osx.. - changelog for psycopg2cffi, fixes #3052
* Added psycopg2cffi dialectShaun Stanworth2015-01-261-0/+1
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* - rework assertsql system, fixes #3293Mike Bayer2015-01-181-126/+162
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* - The :meth:`.Operators.match` operator is now handled such that theMike Bayer2014-12-041-0/+6
| | | | | | | | | | | | | | | | return type is not strictly assumed to be boolean; it now returns a :class:`.Boolean` subclass called :class:`.MatchType`. The type will still produce boolean behavior when used in Python expressions, however the dialect can override its behavior at result time. In the case of MySQL, while the MATCH operator is typically used in a boolean context within an expression, if one actually queries for the value of a match expression, a floating point value is returned; this value is not compatible with SQLAlchemy's C-based boolean processor, so MySQL's result-set behavior now follows that of the :class:`.Float` type. A new operator object ``notmatch_op`` is also added to better allow dialects to define the negation of a match operation. fixes #3263
* - flake8 all of test/dialect/postgresqlMike Bayer2014-07-251-199/+255
| | | | - add __backend__ to most tests so that pg8000 can start coming in
* Fix many typos throughout the codebasepr/85Alex Gaynor2014-04-261-1/+1
| | | | Found using: https://github.com/intgr/topy
* - Support has been improved for Postgresql reflection behavior on very oldMike Bayer2014-02-181-2/+4
| | | | | | | | | | | | (pre 8.1) versions of Postgresql, and potentially other PG engines such as Redshift (assuming Redshift reports the version as < 8.1). The query for "indexes" as well as "primary keys" relies upon inspecting a so-called "int2vector" datatype, which refuses to coerce to an array prior to 8.1 causing failures regarding the "ANY()" operator used in the query. Extensive googling has located the very hacky, but recommended-by-PG-core-developer query to use when PG version < 8.1 is in use, so index and primary key constraint reflection now work on these versions.
* set UTC timezone on the connection here so we can get consistent resultsMike Bayer2013-06-291-6/+9
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* The behavior of :func:`.extract` has been simplified on theMike Bayer2013-06-281-1/+161
| | | | | | | | | Postgresql dialect to no longer inject a hardcoded ``::timestamp`` or similar cast into the given expression, as this interfered with types such as timezone-aware datetimes, but also does not appear to be at all necessary with modern versions of psycopg2. Also in 0.8.2. [ticket:2740]
* refactor test suites for postgresql, mssql, mysql into packages.Mike Bayer2013-06-281-0/+723
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