delta/python-packages/sqlalchemy.git/lib/sqlalchemy/sql/compiler.py, branch pr/295

Work w/ prefetch even for selects, if present

2016-07-12T20:43:49+00:00

Fixed bug in new CTE feature for update/insert/delete stated
as a CTE inside of an enclosing statement (typically SELECT) whereby
oninsert and onupdate values weren't called upon for the embedded
statement.

This is accomplished by consulting prefetch
for all statements.  The collection is also broken into
separate insert/update collections so that we don't need to
consult toplevel self.isinsert to determine if the prefetch
is for an insert or an update.  What we don't yet test for
are CTE combinations that have both insert/update in one
statement, though these should now work in theory provided
the underlying database supports such a statement.

Change-Id: I3b6a860e22c86743c91c56a7ec751ff706f66f64
Fixes: #3745

Don't reorder PrimaryKeyConstraint columns if explicit

2016-06-20T16:52:31+00:00

Dialed back the "order the primary key columns per auto-increment"
described in :ref:`change_mysql_3216` a bit, so that if the
:class:`.PrimaryKeyConstraint` is explicitly defined, the order
of columns is maintained exactly, allowing control of this behavior
when necessary.

Change-Id: I9e7902c57a96c15968a6abf53e319acf15680da0
Fixes: #3726

Add DDLCompiler.create_table_suffix()

2016-06-16T15:43:02+00:00

Allows custom dialects to add keywords after the
CREATE TABLE section.

Change-Id: I6fa66dfcf00ef95122f491a9115410df2746cf88

Add TABLESAMPLE clause support.

2016-06-15T18:42:08+00:00

The TABLESAMPLE clause allows randomly selecting an approximate percentage
of rows from a table. At least DB2, Microsoft SQL Server and recent
Postgresql support this standard clause.

Fixes: #3718
Change-Id: I3fb8b9223e12a57100df30876b461884c58d72fa
Pull-request: https://github.com/zzzeek/sqlalchemy/pull/277

Add ON CONFLICT support for Postgresql

2016-06-14T19:03:14+00:00

Fixes: #3529
Co-authored-by: Mike Bayer 
Change-Id: Ie3bf6ad70d9be9f0e44938830e922db03573991a
Pull-request: https://github.com/zzzeek/sqlalchemy/pull/258

Support range specification in window function

2016-06-07T19:17:22+00:00

Fixes: #3049
Co-authored-by: Mike Bayer 
Change-Id: Ie572095c3e25f70a1e72e1af6858e5edd89fd25e
Pull-request: https://github.com/zzzeek/sqlalchemy/pull/264

Add IS (NOT) DISTINCT FROM operators

2016-06-06T19:53:25+00:00

None / True / False render as literals.
For SQLite, "IS" is used as SQLite lacks
"IS DISTINCT FROM" but its "IS" operator acts
this way for NULL.

Doctext-author: Mike Bayer 
Change-Id: I9227b81f7207b42627a0349d14d40b46aa756cce
Pull-request: https://github.com/zzzeek/sqlalchemy/pull/248

- Added :meth:`.Select.lateral` and related constructs to allow

2016-03-29T21:56:02+00:00

for the SQL standard LATERAL keyword, currently only supported
by Postgresql.  fixes #2857

- Added support for rendering "FULL OUTER JOIN" to both Core and ORM.

2016-03-28T15:50:09+00:00

Pull request courtesy Stefan Urbanek.  fixes #1957

- Fixed bug where the negation of an EXISTS expression would not

2016-03-21T14:57:40+00:00

be properly typed as boolean in the result, and also would fail to be
anonymously aliased in a SELECT list as is the case with a
non-negated EXISTS construct.
fixes #3682