diff options
Diffstat (limited to 'lib/sqlalchemy/sql/dml.py')
| -rw-r--r-- | lib/sqlalchemy/sql/dml.py | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/lib/sqlalchemy/sql/dml.py b/lib/sqlalchemy/sql/dml.py index a2a564690..6756f1554 100644 --- a/lib/sqlalchemy/sql/dml.py +++ b/lib/sqlalchemy/sql/dml.py @@ -262,10 +262,14 @@ class ValuesBase(UpdateBase): has the effect of using the DBAPI `executemany() <http://www.python.org/dev/peps/pep-0249/#id18>`_ method, which provides a high-performance system of invoking - a single-row INSERT statement many times against a series + a single-row INSERT or single-criteria UPDATE or DELETE statement + many times against a series of parameter sets. The "executemany" style is supported by - all database backends, as it does not depend on a special SQL - syntax. + all database backends, and works equally well for INSERT, + UPDATE, and DELETE, as it does not depend on a special SQL + syntax. See :ref:`execute_multiple` for an introduction to + the traditional Core method of multiple parameter set invocation + using this system. .. versionadded:: 0.8 Support for multiple-VALUES INSERT statements. |