Update sql_database.py to support materialized view (#281)

add support for materialized views
see langchain-ai/langchain#32217

---------

Co-authored-by: Mason Daugherty <[email protected]>
Co-authored-by: Mason Daugherty <[email protected]>

Author: groundrace

libs/community/langchain_community/utilities/sql_database.py

@@ -110,6 +110,11 @@ def __init__(
         self._all_tables = set(
             list(self._inspector.get_table_names(schema=schema))
             + (self._inspector.get_view_names(schema=schema) if view_support else [])
+            + (
+                self._inspector.get_materialized_view_names(schema=schema)
+                if view_support
+                else []
+            )
         )
 
         self._include_tables = set(include_tables) if include_tables else set()