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Diffstat (limited to 'lib/sqlalchemy/dialects/postgresql/base.py')
| -rw-r--r-- | lib/sqlalchemy/dialects/postgresql/base.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/sqlalchemy/dialects/postgresql/base.py b/lib/sqlalchemy/dialects/postgresql/base.py index 7de5cafad..aa2048d4b 100644 --- a/lib/sqlalchemy/dialects/postgresql/base.py +++ b/lib/sqlalchemy/dialects/postgresql/base.py @@ -36,6 +36,14 @@ PostgreSQL 8.2 supports an ``INSERT...RETURNING`` syntax which SQLAlchemy suppor as well. A future release of SQLA will use this feature by default in lieu of sequence pre-execution in order to retrieve new primary key values, when available. +Transaction Isolation Level +--------------------------- + +:func:`create_engine` accepts an ``isolation_level`` parameter which results in +the command ``SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL <level>`` +being invoked for every new connection. Valid values for this parameter are +``READ_COMMITTED``, ``READ_UNCOMMITTED``, ``REPEATABLE_READ``, and ``SERIALIZABLE``. + INSERT/UPDATE...RETURNING ------------------------- |