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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2019-03-08 18:36:33 -0500 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2019-03-08 23:45:25 -0500 |
| commit | cbc31716c2cef29f45506c6227c2154e3093c845 (patch) | |
| tree | 9df380e01965a2c8b4641953722b090c2ad0d4a4 /lib/sqlalchemy | |
| parent | d514c032cd0349afc93f89d5b99835198ae70112 (diff) | |
| download | sqlalchemy-cbc31716c2cef29f45506c6227c2154e3093c845.tar.gz | |
Commit transaction after SNAPSHOT isolation change
A commit() is emitted after an isolation level change to SNAPSHOT, as both
pyodbc and pymssql open an implicit transaction which blocks subsequent SQL
from being emitted in the current transaction.
Fixes: #4536
Change-Id: If3ba70f495bce2a35a873a3a72d1b30406e678c8
Diffstat (limited to 'lib/sqlalchemy')
| -rw-r--r-- | lib/sqlalchemy/dialects/mssql/base.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/sqlalchemy/dialects/mssql/base.py b/lib/sqlalchemy/dialects/mssql/base.py index 2d883309d..992b97188 100644 --- a/lib/sqlalchemy/dialects/mssql/base.py +++ b/lib/sqlalchemy/dialects/mssql/base.py @@ -2235,6 +2235,8 @@ class MSDialect(default.DefaultDialect): cursor = connection.cursor() cursor.execute("SET TRANSACTION ISOLATION LEVEL %s" % level) cursor.close() + if level == "SNAPSHOT": + connection.commit() def get_isolation_level(self, connection): if self.server_version_info < MS_2005_VERSION: |