diff options
Diffstat (limited to 'lib/sqlalchemy/engine/interfaces.py')
| -rw-r--r-- | lib/sqlalchemy/engine/interfaces.py | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/lib/sqlalchemy/engine/interfaces.py b/lib/sqlalchemy/engine/interfaces.py index c32b1a1fb..c1de13221 100644 --- a/lib/sqlalchemy/engine/interfaces.py +++ b/lib/sqlalchemy/engine/interfaces.py @@ -1790,15 +1790,19 @@ class Dialect(EventTarget): published so that third-party dialects may provide an implementation. It is **not** the public API for checking for table presence. Please use the :meth:`.Inspector.has_table` method. - Alternatively, for legacy cross-compatibility, the - :meth:`_engine.Engine.has_table` method may be used. - .. versionchanged:: 2.0 + .. versionchanged:: 2.0:: :meth:`_engine.Dialect.has_table` now + formally supports checking for additional table-like objects: - The :meth:`_engine.Dialect.has_table` method should also check - for the presence of views. In previous versions this - behavior was dialect specific. New dialect suite tests were added - to ensure that dialects conform with this behavior consistently. + * any type of views (plain or materialized) + * temporary tables of any kind + + Previously, these two checks were not formally specified and + different dialects would vary in their behavior. The dialect + testing suite now includes tests for all of these object types, + and dialects to the degree that the backing database supports views + or temporary tables should seek to support locating these objects + for full compliance. """ |