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--
-- 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);
 set_config 
------------
  
(1 row)

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;
ERROR:  column "c" does not exist
LINE 2:        CREATE VIEW abc_view AS SELECT c FROM abc;
                                              ^
COMMIT;
SHOW search_path;
 search_path 
-------------
 public
(1 row)

-- 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;
       search_path        
--------------------------
 public, test_ns_schema_1
(1 row)

COMMIT;
SHOW search_path;
       search_path        
--------------------------
 public, test_ns_schema_1
(1 row)

DROP SCHEMA test_ns_schema_2 CASCADE;
NOTICE:  drop cascades to view test_ns_schema_2.abc_view
-- verify that the objects were created
SELECT COUNT(*) FROM pg_class WHERE relnamespace =
    (SELECT oid FROM pg_namespace WHERE nspname = 'test_ns_schema_1');
 count 
-------
     5
(1 row)

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;
 a | b 
---+---
 1 |  
 2 |  
 3 |  
(3 rows)

SELECT * FROM test_ns_schema_1.abc_view;
 a | b 
---+---
 2 |  
 3 |  
 4 |  
(3 rows)

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');
 count 
-------
     0
(1 row)

-- test IF NOT EXISTS cases
CREATE SCHEMA test_ns_schema_renamed; -- fail, already exists
ERROR:  schema "test_ns_schema_renamed" already exists
CREATE SCHEMA IF NOT EXISTS test_ns_schema_renamed; -- ok with notice
NOTICE:  schema "test_ns_schema_renamed" already exists, skipping
CREATE SCHEMA IF NOT EXISTS test_ns_schema_renamed -- fail, disallowed
       CREATE TABLE abc (
              a serial,
              b int UNIQUE
       );
ERROR:  CREATE SCHEMA IF NOT EXISTS cannot include schema elements
LINE 2:        CREATE TABLE abc (
               ^
DROP SCHEMA test_ns_schema_renamed CASCADE;
NOTICE:  drop cascades to 2 other objects
DETAIL:  drop cascades to table test_ns_schema_renamed.abc
drop cascades to view test_ns_schema_renamed.abc_view
-- verify that the objects were dropped
SELECT COUNT(*) FROM pg_class WHERE relnamespace =
    (SELECT oid FROM pg_namespace WHERE nspname = 'test_ns_schema_renamed');
 count 
-------
     0
(1 row)