From 668872fe0108c3885adcf6cb10b653b812dc258f Mon Sep 17 00:00:00 2001 From: Gord Thompson Date: Sun, 19 Apr 2020 11:47:19 -0600 Subject: 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 --- lib/sqlalchemy/engine/default.py | 3 +++ 1 file changed, 3 insertions(+) (limited to 'lib/sqlalchemy/engine/default.py') diff --git a/lib/sqlalchemy/engine/default.py b/lib/sqlalchemy/engine/default.py index d0f5cfe96..c682a8ee1 100644 --- a/lib/sqlalchemy/engine/default.py +++ b/lib/sqlalchemy/engine/default.py @@ -23,6 +23,7 @@ from . import cursor as _cursor from . import interfaces from .. import event from .. import exc +from .. import Integer from .. import pool from .. import processors from .. import types as sqltypes @@ -58,6 +59,8 @@ class DefaultDialect(interfaces.Dialect): # not cx_oracle. execute_sequence_format = tuple + sequence_default_column_type = Integer + supports_views = True supports_sequences = False sequences_optional = False -- cgit v1.2.1