chore: import upstream snapshot with attribution

2026-07-13 12:32:25 +08:00
commit e014feafe1
2285 changed files with 1131979 additions and 0 deletions
@@ -0,0 +1,68 @@
+--
+-- Regression tests for schemas (namespaces)
+--
+
+-- set the whitespace-only search_path to test that the
+-- GUC list syntax is preserved during a schema creation
+SELECT pg_catalog.set_config('search_path', ' ', false);
+
+CREATE SCHEMA test_ns_schema_1
+       CREATE UNIQUE INDEX abc_a_idx ON abc (a)
+
+       CREATE VIEW abc_view AS
+              SELECT a+1 AS a, b+1 AS b FROM abc
+
+       CREATE TABLE abc (
+              a serial,
+              b int UNIQUE
+       );
+
+-- verify that the correct search_path restored on abort
+SET search_path to public;
+BEGIN;
+SET search_path to public, test_ns_schema_1;
+CREATE SCHEMA test_ns_schema_2
+       CREATE VIEW abc_view AS SELECT c FROM abc;
+COMMIT;
+SHOW search_path;
+
+-- verify that the correct search_path preserved
+-- after creating the schema and on commit
+BEGIN;
+SET search_path to public, test_ns_schema_1;
+CREATE SCHEMA test_ns_schema_2
+       CREATE VIEW abc_view AS SELECT a FROM abc;
+SHOW search_path;
+COMMIT;
+SHOW search_path;
+DROP SCHEMA test_ns_schema_2 CASCADE;
+
+-- verify that the objects were created
+SELECT COUNT(*) FROM pg_class WHERE relnamespace =
+    (SELECT oid FROM pg_namespace WHERE nspname = 'test_ns_schema_1');
+
+INSERT INTO test_ns_schema_1.abc DEFAULT VALUES;
+INSERT INTO test_ns_schema_1.abc DEFAULT VALUES;
+INSERT INTO test_ns_schema_1.abc DEFAULT VALUES;
+
+SELECT * FROM test_ns_schema_1.abc;
+SELECT * FROM test_ns_schema_1.abc_view;
+
+ALTER SCHEMA test_ns_schema_1 RENAME TO test_ns_schema_renamed;
+SELECT COUNT(*) FROM pg_class WHERE relnamespace =
+    (SELECT oid FROM pg_namespace WHERE nspname = 'test_ns_schema_1');
+
+-- test IF NOT EXISTS cases
+CREATE SCHEMA test_ns_schema_renamed; -- fail, already exists
+CREATE SCHEMA IF NOT EXISTS test_ns_schema_renamed; -- ok with notice
+CREATE SCHEMA IF NOT EXISTS test_ns_schema_renamed -- fail, disallowed
+       CREATE TABLE abc (
+              a serial,
+              b int UNIQUE
+       );
+
+DROP SCHEMA test_ns_schema_renamed CASCADE;
+
+-- verify that the objects were dropped
+SELECT COUNT(*) FROM pg_class WHERE relnamespace =
+    (SELECT oid FROM pg_namespace WHERE nspname = 'test_ns_schema_renamed');