diff options
| author | Federico Caselli <cfederico87@gmail.com> | 2020-04-16 23:16:32 +0200 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2020-04-20 11:28:51 -0400 |
| commit | 07d6d211f23f1d9d1d69fd54e8054bccd515bc8c (patch) | |
| tree | 321a19e49f8918ec38bba96bf4c062633801bd26 /lib/sqlalchemy/sql/selectable.py | |
| parent | 2f617f56f2acdce00b88f746c403cf5ed66d4d27 (diff) | |
| download | sqlalchemy-07d6d211f23f1d9d1d69fd54e8054bccd515bc8c.tar.gz | |
Deprecate ``DISTINCT ON`` when not targeting PostgreSQL
Deprecate usage of ``DISTINCT ON`` in dialect other than PostgreSQL.
Previously this was silently ignored.
Deprecate old usage of string distinct in MySQL dialect
Fixes: #4002
Change-Id: I38fc64aef75e77748083c11d388ec831f161c9c9
Diffstat (limited to 'lib/sqlalchemy/sql/selectable.py')
| -rw-r--r-- | lib/sqlalchemy/sql/selectable.py | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/selectable.py b/lib/sqlalchemy/sql/selectable.py index 89ee7e28f..c8df637ba 100644 --- a/lib/sqlalchemy/sql/selectable.py +++ b/lib/sqlalchemy/sql/selectable.py @@ -4138,6 +4138,9 @@ class Select( the PostgreSQL dialect will render a ``DISTINCT ON (<expressions>>)`` construct. + .. deprecated:: 1.4 Using \*expr in other dialects is deprecated + and will raise :class:`_exc.CompileError` in a future version. + """ if expr: self._distinct = True |