-- predictability
SET synchronous_commit = on;
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
 ?column? 
----------
 init
(1 row)

CREATE TABLE xact_test(data text);
INSERT INTO xact_test VALUES ('before-test');
-- bug #13844, xids in non-decoded records need to be inspected
BEGIN;
-- perform operation in xact that creates and logs xid, but isn't decoded
SELECT * FROM xact_test FOR UPDATE;
    data     
-------------
 before-test
(1 row)

SAVEPOINT foo;
-- and now actually insert in subxact, xid is expected to be known
INSERT INTO xact_test VALUES ('after-assignment');
COMMIT;
-- and now show those changes
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
                             data                              
---------------------------------------------------------------
 BEGIN
 table public.xact_test: INSERT: data[text]:'before-test'
 COMMIT
 BEGIN
 table public.xact_test: INSERT: data[text]:'after-assignment'
 COMMIT
(6 rows)

-- bug #14279, do not propagate null snapshot from subtransaction
BEGIN;
-- first insert
INSERT INTO xact_test VALUES ('main-txn');
SAVEPOINT foo;
-- now perform operation in subxact that creates and logs xid, but isn't decoded
SELECT 1 FROM xact_test FOR UPDATE LIMIT 1;
 ?column? 
----------
        1
(1 row)

COMMIT;
-- and now show those changes
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
                         data                          
-------------------------------------------------------
 BEGIN
 table public.xact_test: INSERT: data[text]:'main-txn'
 COMMIT
(3 rows)

DROP TABLE xact_test;
SELECT pg_drop_replication_slot('regression_slot');
 pg_drop_replication_slot 
--------------------------
 
(1 row)