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----
-- Regression test to Global Temporary Table implementation
--
-- Test for transaction manamgement on GTT.
--
-- Test that the creation a GTT in rollbacked transaction
-- will not preserve it.
--
----
BEGIN;
-- Register the Global temporary table in a transaction
CREATE /*GLOBAL*/ TEMPORARY TABLE t_glob_temptable1 (id integer, lbl text) ON COMMIT PRESERVE ROWS;
-- Look at Global Temporary Table definition
SELECT nspname, relname, preserved, code FROM pgtt_schema.pg_global_temp_tables;
nspname | relname | preserved | code
-------------+-------------------+-----------+----------------------
pgtt_schema | t_glob_temptable1 | t | id integer, lbl text
(1 row)
-- A "template" unlogged table should exists
SELECT n.nspname, c.relname FROM pg_class c JOIN pg_namespace n ON (c.relnamespace=n.oid) WHERE relname = 't_glob_temptable1';
nspname | relname
-------------+-------------------
pgtt_schema | t_glob_temptable1
(1 row)
-- Insert some value will create the temporary table
INSERT INTO t_glob_temptable1 VALUES (1, 'One');
INSERT INTO t_glob_temptable1 VALUES (2, 'Two');
-- Look at content of the template for Global Temporary Table, must be empty
SET pgtt.enabled TO off;
SELECT * FROM pgtt_schema.t_glob_temptable1;
id | lbl
----+-----
(0 rows)
SET pgtt.enabled TO on;
-- Look at content of the Global Temporary Table
SELECT * FROM t_glob_temptable1;
id | lbl
----+-----
1 | One
2 | Two
(2 rows)
ROLLBACK;
-- The GTT must not exists
SELECT * FROM t_glob_temptable1;
ERROR: relation "t_glob_temptable1" does not exist
LINE 1: SELECT * FROM t_glob_temptable1;
^
-- Return nothing
SELECT n.nspname, c.relname FROM pg_class c JOIN pg_namespace n ON (c.relnamespace=n.oid) WHERE relname = 't_glob_temptable1';
nspname | relname
---------+---------
(0 rows)
-- Register the Global temporary table outside the transaction
CREATE /*GLOBAL*/ TEMPORARY TABLE t_glob_temptable1 (id integer, lbl text) ON COMMIT PRESERVE ROWS;
BEGIN;
-- Drop the GTT
DROP TABLE t_glob_temptable1;
ROLLBACK;
-- Insert some value will create the temporary table
INSERT INTO t_glob_temptable1 VALUES (1, 'One');
INSERT INTO t_glob_temptable1 VALUES (2, 'Two');
-- The GTT must not exists
SELECT * FROM t_glob_temptable1;
id | lbl
----+-----
1 | One
2 | Two
(2 rows)
-- Both tables muste exists
SELECT n.nspname, c.relname FROM pg_class c JOIN pg_namespace n ON (c.relnamespace=n.oid) WHERE relname = 't_glob_temptable1';
nspname | relname
-------------+-------------------
pgtt_schema | t_glob_temptable1
(1 row)
-- Reconnect and drop it
\c - -
-- Cleanup
DROP TABLE t_glob_temptable1;
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