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Diffstat (limited to 'lib/sqlalchemy/engine')
| -rw-r--r-- | lib/sqlalchemy/engine/__init__.py | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/sqlalchemy/engine/__init__.py b/lib/sqlalchemy/engine/__init__.py index 9c9e03821..68145f5cd 100644 --- a/lib/sqlalchemy/engine/__init__.py +++ b/lib/sqlalchemy/engine/__init__.py @@ -248,6 +248,22 @@ def create_engine(*args, **kwargs): Microsoft SQL Server. Set this to ``False`` to disable the automatic usage of RETURNING. + :param isolation_level: this string parameter is interpreted by various + dialects in order to affect the transaction isolation level of the + database connection. The parameter essentially accepts some subset of + these string arguments: ``"SERIALIZABLE"``, ``"REPEATABLE_READ"``, + ``"READ_COMMITTED"``, ``"READ_UNCOMMITTED"`` and ``"AUTOCOMMIT"``. + Behavior here varies per backend, and + individual dialects should be consulted directly. + + .. seealso:: + + :ref:`SQLite Concurrency <sqlite_concurrency>` + + :ref:`Postgresql Transaction Isolation <postgresql_isolation_level>` + + :ref:`MySQL Transaction Isolation <mysql_isolation_level>` + :param label_length=None: optional integer value which limits the size of dynamically generated column labels to that many characters. If less than 6, labels are generated as |