43 lines
1.6 KiB
PL/PgSQL
43 lines
1.6 KiB
PL/PgSQL
-- test that we can insert the result of a get_changes call into a
|
|
-- logged relation. That's really not a good idea in practical terms,
|
|
-- but provides a nice test.
|
|
|
|
-- predictability
|
|
SET synchronous_commit = on;
|
|
|
|
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
|
|
|
|
-- slot works
|
|
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
|
|
|
|
-- create some changes
|
|
CREATE TABLE somechange(id serial primary key);
|
|
INSERT INTO somechange DEFAULT VALUES;
|
|
|
|
CREATE TABLE changeresult AS
|
|
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
|
|
|
|
SELECT * FROM changeresult;
|
|
|
|
INSERT INTO changeresult
|
|
SELECT data FROM pg_logical_slot_peek_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
|
|
INSERT INTO changeresult
|
|
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
|
|
|
|
SELECT * FROM changeresult;
|
|
DROP TABLE changeresult;
|
|
DROP TABLE somechange;
|
|
|
|
-- check calling logical decoding from pl/pgsql
|
|
CREATE FUNCTION slot_changes_wrapper(slot_name name) RETURNS SETOF TEXT AS $$
|
|
BEGIN
|
|
RETURN QUERY
|
|
SELECT data FROM pg_logical_slot_peek_changes(slot_name, NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
|
|
END$$ LANGUAGE plpgsql;
|
|
|
|
SELECT * FROM slot_changes_wrapper('regression_slot');
|
|
|
|
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
|
|
|
|
SELECT 'stop' FROM pg_drop_replication_slot('regression_slot');
|