1CREATE TABLE t1( 2a INT AUTO_INCREMENT PRIMARY KEY, 3b CHAR(255), 4INDEX(b)) 5ENGINE=InnoDB; 6INSERT INTO t1(b) SELECT UUID(); 7BEGIN; 8INSERT INTO t1(b) SELECT UUID() FROM t1; 9INSERT INTO t1(b) SELECT UUID() FROM t1; 10INSERT INTO t1(b) SELECT UUID() FROM t1; 11INSERT INTO t1(b) SELECT UUID() FROM t1; 12INSERT INTO t1(b) SELECT UUID() FROM t1; 13INSERT INTO t1(b) SELECT UUID() FROM t1; 14INSERT INTO t1(b) SELECT UUID() FROM t1; 15INSERT INTO t1(b) SELECT UUID() FROM t1; 16INSERT INTO t1(b) SELECT UUID() FROM t1; 17INSERT INTO t1(b) SELECT UUID() FROM t1; 18INSERT INTO t1(b) SELECT UUID() FROM t1; 19INSERT INTO t1(b) SELECT UUID() FROM t1; 20INSERT INTO t1(b) SELECT UUID() FROM t1; 21INSERT INTO t1(b) SELECT UUID() FROM t1; 22COMMIT; 23UPDATE t1 SET b=UUID(); 24DROP TABLE t1; 25