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| author | Gord Thompson <gord@gordthompson.com> | 2020-04-19 11:47:19 -0600 |
|---|---|---|
| committer | Gord Thompson <gord@gordthompson.com> | 2020-05-29 08:10:38 -0600 |
| commit | 668872fe0108c3885adcf6cb10b653b812dc258f (patch) | |
| tree | 1b70ad2d164b1f9060b29a4535bc55bcf5a11350 /lib/sqlalchemy/dialects/mssql/information_schema.py | |
| parent | 5e1d11573350f8035ed607e9c97b9f8896ab3132 (diff) | |
| download | sqlalchemy-668872fe0108c3885adcf6cb10b653b812dc258f.tar.gz | |
Add support for "real" sequences in mssql
Added support for "CREATE SEQUENCE" and full :class:`.Sequence` support for
Microsoft SQL Server. This removes the deprecated feature of using
:class:`.Sequence` objects to manipulate IDENTITY characteristics which
should now be performed using ``mssql_identity_start`` and
``mssql_identity_increment`` as documented at :ref:`mssql_identity`. The
change includes a new parameter :paramref:`.Sequence.data_type` to
accommodate SQL Server's choice of datatype, which for that backend
includes INTEGER and BIGINT. The default starting value for SQL Server's
version of :class:`.Sequence` has been set at 1; this default is now
emitted within the CREATE SEQUENCE DDL for all backends.
Fixes: #4235
Fixes: #4633
Change-Id: I6aa55c441e8146c2f002e2e201a7f645e667b916
Diffstat (limited to 'lib/sqlalchemy/dialects/mssql/information_schema.py')
| -rw-r--r-- | lib/sqlalchemy/dialects/mssql/information_schema.py | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/sqlalchemy/dialects/mssql/information_schema.py b/lib/sqlalchemy/dialects/mssql/information_schema.py index e9ab6f4f3..6cdde8386 100644 --- a/lib/sqlalchemy/dialects/mssql/information_schema.py +++ b/lib/sqlalchemy/dialects/mssql/information_schema.py @@ -173,3 +173,12 @@ computed_columns = Table( Column("definition", CoerceUnicode), schema="sys", ) + +sequences = Table( + "SEQUENCES", + ischema, + Column("SEQUENCE_CATALOG", CoerceUnicode, key="sequence_catalog"), + Column("SEQUENCE_SCHEMA", CoerceUnicode, key="sequence_schema"), + Column("SEQUENCE_NAME", CoerceUnicode, key="sequence_name"), + schema="INFORMATION_SCHEMA", +) |