CREATE TABLE t1 (a INT) ENGINE=InnoDB;
CREATE TABLE t2 (b INT) ENGINE=InnoDB;
CREATE TABLE t3 (c INT) ENGINE=InnoDB;
CREATE TRIGGER tr BEFORE INSERT ON t3 FOR EACH ROW BEGIN SAVEPOINT sv; INSERT INTO t2 VALUES (0); END $$
START TRANSACTION;
DELETE FROM t1;
connect  con1,localhost,root,,test;
START TRANSACTION;
INSERT INTO t2 VALUES (2);
UPDATE t2 SET b = b+1;
INSERT INTO t1 VALUES (1);
connection default;
COMMIT;
connection con1;
COMMIT;
disconnect con1;
connection default;
SELECT * FROM t1;
a
1
SELECT * FROM t2;
b
3
SELECT * FROM t3;
c
DROP TABLE t1, t2, t3;
DROP TRIGGER tr;
ERROR HY000: Trigger does not exist