Fix table reflection on oracle <10.2

zeehio · CaselIT · commit f9a865c3d4eb · 2024-07-02T22:11:41.000+02:00
Fixed table reflection on Oracle 10.2 and older where compression options are not supported. Fixes: sqlalchemy#11557 Closes: sqlalchemy#11558 Pull-request: sqlalchemy#11558 Pull-request-sha: 44e4f51 Change-Id: I34c6a367bef158a0c6cf01f185e18392552b7cc7
diff --git a/doc/build/changelog/unreleased_20/11557.txt b/doc/build/changelog/unreleased_20/11557.txt
@@ -0,0 +1,6 @@
+.. change::
+    :tags: bug, reflection, oracle
+    :tickets: 11557
+
+    Fixed table reflection on Oracle 10.2 and older where compression options
+    are not supported.
diff --git a/lib/sqlalchemy/dialects/oracle/base.py b/lib/sqlalchemy/dialects/oracle/base.py
@@ -2051,8 +2051,16 @@ def _table_options_query(
     ):
         query = select(
             dictionary.all_tables.c.table_name,
-            dictionary.all_tables.c.compression,
-            dictionary.all_tables.c.compress_for,
+            (
+                dictionary.all_tables.c.compression
+                if self._supports_table_compression
+                else sql.null().label("compression")
+            ),
+            (
+                dictionary.all_tables.c.compress_for
+                if self._supports_table_compress_for
+                else sql.null().label("compress_for")
+            ),
         ).where(dictionary.all_tables.c.owner == owner)
         if has_filter_names:
             query = query.where(
