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SET SESSION innodb_lock_wait_timeout=1;
SET SESSION innodb_lock_wait_timeout=1;
# Case 1: Test primary index
CREATE TABLE t1(
seat_id INT,
state INT,
PRIMARY KEY(seat_id)
) ENGINE=InnoDB;
INSERT INTO t1 VALUES(1,0), (2,0), (3,0), (4,0);
BEGIN;
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR SHARE;
seat_id state
1 0
2 0
BEGIN;
SELECT * FROM t1 WHERE state = 0 LIMIT 2 LOCK IN SHARE MODE;
seat_id state
1 0
2 0
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR SHARE;
seat_id state
1 0
2 0
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR SHARE NOWAIT;
seat_id state
1 0
2 0
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR SHARE SKIP LOCKED;
seat_id state
1 0
2 0
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR UPDATE;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR UPDATE NOWAIT;
ERROR HY000: Statement aborted because lock(s) could not be acquired immediately and NOWAIT is set.
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR UPDATE SKIP LOCKED;
seat_id state
3 0
4 0
SELECT * FROM t1 WHERE seat_id > 0 LIMIT 2 FOR UPDATE NOWAIT;
ERROR HY000: Statement aborted because lock(s) could not be acquired immediately and NOWAIT is set.
SELECT * FROM t1 WHERE seat_id > 0 LIMIT 2 FOR UPDATE SKIP LOCKED;
seat_id state
3 0
4 0
COMMIT;
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR UPDATE;
seat_id state
1 0
2 0
SELECT * FROM t1 WHERE state = 0 LIMIT 2 LOCK IN SHARE MODE;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR SHARE;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR SHARE NOWAIT;
ERROR HY000: Statement aborted because lock(s) could not be acquired immediately and NOWAIT is set.
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR SHARE SKIP LOCKED;
seat_id state
3 0
4 0
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR UPDATE;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR UPDATE NOWAIT;
ERROR HY000: Statement aborted because lock(s) could not be acquired immediately and NOWAIT is set.
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR UPDATE SKIP LOCKED;
seat_id state
3 0
4 0
SELECT * FROM t1 WHERE seat_id > 0 LIMIT 2 FOR UPDATE NOWAIT;
ERROR HY000: Statement aborted because lock(s) could not be acquired immediately and NOWAIT is set.
SELECT * FROM t1 WHERE seat_id > 0 LIMIT 2 FOR UPDATE SKIP LOCKED;
seat_id state
3 0
4 0
COMMIT;
COMMIT;
DROP TABLE t1;
# Case 2: Test primary index & secondary index
CREATE TABLE t1(
seat_id INT,
row_id INT,
state INT,
PRIMARY KEY(seat_id),
KEY(row_id)
) ENGINE=InnoDB;
INSERT INTO t1 VALUES(1,1,0), (2,1,0), (3,2,0), (4,2,0);
# Test secondary key
BEGIN;
SELECT * FROM t1 WHERE state = 0 AND row_id = 1 LIMIT 1 FOR UPDATE NOWAIT;
seat_id row_id state
1 1 0
BEGIN;
SELECT * FROM t1 WHERE state = 0 AND row_id = 1 LIMIT 1 FOR UPDATE NOWAIT;
ERROR HY000: Statement aborted because lock(s) could not be acquired immediately and NOWAIT is set.
SELECT * FROM t1 WHERE state = 0 AND row_id = 1 LIMIT 1 FOR UPDATE SKIP LOCKED;
seat_id row_id state
2 1 0
SELECT * FROM t1 WHERE state = 0 AND row_id > 0 LIMIT 1 FOR UPDATE NOWAIT;
ERROR HY000: Statement aborted because lock(s) could not be acquired immediately and NOWAIT is set.
SELECT * FROM t1 WHERE state = 0 AND row_id > 0 LIMIT 1 FOR UPDATE SKIP LOCKED;
seat_id row_id state
2 1 0
SELECT * FROM t1 WHERE state = 0 FOR UPDATE NOWAIT;
ERROR HY000: Statement aborted because lock(s) could not be acquired immediately and NOWAIT is set.
SELECT * FROM t1 WHERE state = 0 FOR UPDATE SKIP LOCKED;
seat_id row_id state
2 1 0
3 2 0
4 2 0
COMMIT;
COMMIT;
BEGIN;
SELECT * FROM t1 WHERE seat_id = 1 FOR UPDATE NOWAIT;
seat_id row_id state
1 1 0
BEGIN;
SELECT * FROM t1 WHERE state = 0 AND row_id = 1 LIMIT 1 FOR UPDATE NOWAIT;
ERROR HY000: Statement aborted because lock(s) could not be acquired immediately and NOWAIT is set.
SELECT * FROM t1 WHERE state = 0 AND row_id = 1 LIMIT 1 FOR UPDATE SKIP LOCKED;
seat_id row_id state
2 1 0
SELECT * FROM t1 WHERE state = 0 FOR UPDATE NOWAIT;
ERROR HY000: Statement aborted because lock(s) could not be acquired immediately and NOWAIT is set.
SELECT * FROM t1 WHERE state = 0 FOR UPDATE SKIP LOCKED;
seat_id row_id state
2 1 0
3 2 0
4 2 0
COMMIT;
COMMIT;
DROP TABLE t1;
# Case 3: Test primary index & spatial index
CREATE TABLE t1(
seat_id INT,
pos POINT NOT NULL SRID 0,
state INT,
PRIMARY KEY(seat_id),
SPATIAL KEY(pos)
) ENGINE=InnoDB;
INSERT INTO t1 VALUES
(1,ST_PointFromText('POINT(1 0)'),0),
(2,ST_PointFromText('POINT(1 1)'),0),
(3,ST_PointFromText('POINT(2 0)'),0),
(4,ST_PointFromText('POINT(2 1)'),0),
(5,ST_PointFromText('POINT(3 0)'),0),
(6,ST_PointFromText('POINT(3 1)'),0);
BEGIN;
SET @g = ST_GeomFromText('POLYGON((0 0,0 2,2 2,0 2,0 0))');
SELECT seat_id, state, ST_AsText(pos) FROM t1 FORCE INDEX (pos)
WHERE state = 0 AND MBRWithin(pos, @g) FOR UPDATE NOWAIT;
seat_id state ST_AsText(pos)
2 0 POINT(1 1)
BEGIN;
SET @g = ST_GeomFromText('POLYGON((0 0,0 4,4 4,0 4,0 0))');
SELECT seat_id, state, ST_AsText(pos) FROM t1 FORCE INDEX (pos)
WHERE state = 0 AND MBRWithin(pos, @g) FOR UPDATE NOWAIT;
ERROR HY000: Statement aborted because lock(s) could not be acquired immediately and NOWAIT is set.
SELECT seat_id, state, ST_AsText(pos) FROM t1 FORCE INDEX (pos)
WHERE state = 0 AND MBRWithin(pos, @g) FOR UPDATE SKIP LOCKED;
seat_id state ST_AsText(pos)
6 0 POINT(3 1)
SELECT seat_id, state, ST_AsText(pos) FROM t1
WHERE state = 0 FOR UPDATE NOWAIT;
ERROR HY000: Statement aborted because lock(s) could not be acquired immediately and NOWAIT is set.
SELECT seat_id, state, ST_AsText(pos) FROM t1
WHERE state = 0 FOR UPDATE SKIP LOCKED;
seat_id state ST_AsText(pos)
5 0 POINT(3 0)
6 0 POINT(3 1)
COMMIT;
COMMIT;
SET @g = ST_GeomFromText('POLYGON((0 0,0 3,3 3,0 3,0 0))');
SELECT seat_id, state, ST_AsText(pos) FROM t1 FORCE INDEX (pos)
WHERE state = 0 AND MBRWithin(pos, @g) FOR UPDATE;
seat_id state ST_AsText(pos)
4 0 POINT(2 1)
2 0 POINT(1 1)
BEGIN;
SELECT seat_id, state, ST_AsText(pos) FROM t1
WHERE seat_id = 4 FOR UPDATE NOWAIT;
seat_id state ST_AsText(pos)
4 0 POINT(2 1)
SELECT seat_id, state, ST_AsText(pos) FROM t1 FORCE INDEX (pos)
WHERE state = 0 AND MBRWithin(pos, @g) FOR UPDATE NOWAIT;
ERROR HY000: Statement aborted because lock(s) could not be acquired immediately and NOWAIT is set.
SELECT seat_id, state, ST_AsText(pos) FROM t1 FORCE INDEX (pos)
WHERE state = 0 AND MBRWithin(pos, @g) FOR UPDATE SKIP LOCKED;
seat_id state ST_AsText(pos)
2 0 POINT(1 1)
SELECT seat_id, state, ST_AsText(pos) FROM t1
WHERE state = 0 FOR UPDATE NOWAIT;
ERROR HY000: Statement aborted because lock(s) could not be acquired immediately and NOWAIT is set.
SELECT seat_id, state, ST_AsText(pos) FROM t1
WHERE state = 0 FOR UPDATE SKIP LOCKED;
seat_id state ST_AsText(pos)
1 0 POINT(1 0)
2 0 POINT(1 1)
3 0 POINT(2 0)
5 0 POINT(3 0)
6 0 POINT(3 1)
COMMIT;
DROP TABLE t1;
# Case 4: Test high priority transaction
CREATE TABLE t1(
seat_id INT,
state INT,
PRIMARY KEY(seat_id)
) ENGINE=InnoDB;
INSERT INTO t1 VALUES(1,0), (2,0), (3,0), (4,0);
BEGIN;
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR UPDATE;
seat_id state
1 0
2 0
include/start_transaction_high_prio.inc
START TRANSACTION /* HIGH PRIORITY */;
SELECT * FROM t1 WHERE seat_id = 1 AND state = 0 FOR UPDATE NOWAIT;
seat_id state
1 0
SELECT * FROM t1 WHERE state = 0 LIMIT 2 FOR UPDATE SKIP LOCKED;
seat_id state
1 0
2 0
COMMIT;
COMMIT;
ERROR HY000: Got error 149 - 'Lock deadlock; Retry transaction' during COMMIT
ROLLBACK;
DROP TABLE t1;
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