DROP TABLE IF EXISTS t1,t2;
CREATE TABLE t1 (a <INT_COLUMN>, b <CHAR_COLUMN>) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
INSERT INTO t1 (a,b) VALUES (1,'a'),(2,'b'),(3,'c'),(4,'d'),(5,'e'),(10000,'foobar');
INSERT INTO t1 (a,b) SELECT a, b FROM t1;
CREATE TABLE t2 (c <CHAR_COLUMN>, d <INT_COLUMN>) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
INSERT INTO t2 (c,d) SELECT b, a FROM t1;
UPDATE t1, t2 SET t1.a = t2.d+100, t2.c = 'multi' WHERE c < b AND a + d != 1;
SELECT a,b FROM t1;
a	b
1	a
1	a
101	b
101	b
101	c
101	c
101	d
101	d
101	e
101	e
101	foobar
101	foobar
SELECT c,d FROM t2;
c	d
foobar	10000
foobar	10000
multi	1
multi	1
multi	2
multi	2
multi	3
multi	3
multi	4
multi	4
multi	5
multi	5
UPDATE t2, t1 SET t2.d = DEFAULT WHERE c = 'foobar' and b = c;
SELECT a,b FROM t1;
a	b
1	a
1	a
101	b
101	b
101	c
101	c
101	d
101	d
101	e
101	e
101	foobar
101	foobar
SELECT c,d FROM t2;
c	d
foobar	NULL
foobar	NULL
multi	1
multi	1
multi	2
multi	2
multi	3
multi	3
multi	4
multi	4
multi	5
multi	5
DROP TABLE t1, t2;