d12b37f90e
Allow delete where clause to refer multiple tables.
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Implemented "DELETE..FROM" syntax for Postgresql, MySQL, MS SQL Server
(as well as within the unsupported Sybase dialect) in a manner similar
to how "UPDATE..FROM" works. A DELETE statement that refers to more than
one table will switch into "multi-table" mode and render the appropriate
"USING" or multi-table "FROM" clause as understood by the database.
Pull request courtesy Pieter Mulder.
For SQL syntaxes see:
Postgresql: https://www.postgresql.org/docs/current/static/sql-delete.html
MySQL: https://dev.mysql.com/doc/refman/5.7/en/delete.html#multiple-table_syntax
MSSQL: https://docs.microsoft.com/en-us/sql/t-sql/statements/delete-transact-sql
Sybase: http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.infocenter.dc00801.1510/html/iqrefso/X315721.htm
Co-authored by: Mike Bayer <mike_mp@zzzcomputing.com >
Change-Id: I6dfd57b49e44a095d076dc493cd2360bb5d920d3
Pull-request: https://github.com/zzzeek/sqlalchemy/pull/392
Fixes : #959
2017-12-05 14:26:28 -05:00
bb5f4392a4
- update the flake8 rules again
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- apply autopep8 + manual fixes to most of test/sql/
2014-07-18 17:40:58 -04:00
55eacc8dbe
- Fixed bug where :meth:.Table.update and :meth:.Table.delete
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would produce an empty WHERE clause when an empty :func:`.and_()`
or :func:`.or_()` or other blank expression were applied. This is
now consistent with that of :func:`.select`.
fixes #3045
2014-05-08 22:44:06 -04:00
e6d6cfbf6b
fixing tests for --db=mysql: VARCHAR requires a length on dialect mysql
2013-03-30 01:01:59 -04:00
0f203d57cd
move the delete tests from CRUDTest into sql/test_delete.py (see #2630 )
2013-03-29 17:25:39 -04:00
inytar