1	2
4
1	6
0
ALTER TABLE t_delay_mutations UPDATE v = 3 WHERE 1;	0	0
ALTER TABLE t_delay_mutations UPDATE v = 4 WHERE 1;	0	0
ALTER TABLE t_delay_mutations UPDATE v = 5 WHERE 1;	1	1
ALTER TABLE t_delay_mutations UPDATE v = 6 WHERE 1;	1	1