SET autocommit = 0;
START TRANSACTION;
*** Disabling result log
SELECT @pk:=`pk`, @unique:=`int1_unique`
    FROM t1
WHERE `pk` MOD 5 <> 0
AND `pk` > 200 + (CONNECTION_ID() MOD 1000)
AND `int1_unique` NOT IN (SELECT `int1_unique` FROM t1 WHERE (`pk` < 1000 AND `pk` MOD 5 = 0) OR `is_consistent` = 0)
AND -`int1_unique` NOT IN (SELECT `int2_unique` FROM t1 WHERE (`pk` < 1000 AND `pk` MOD 5 = 0) OR `is_consistent` = 0)
AND `is_consistent`= 1
LIMIT 1 FOR UPDATE;
*** Enabling result log
REPLACE INTO t1 SET `pk` = @pk,
`id` = 7,
`int1` = 7,
`int1_key` = -7,
`int1_unique` = @unique,
`int2` = -7,
`int2_key` = 7,
`int2_unique` = -@unique,
`connection_id` = CONNECTION_ID(),
`is_consistent` = 1;
COMMIT;
START TRANSACTION;
REPLACE INTO t1
SELECT * FROM t1
WHERE `pk` > 1000 + CONNECTION_ID() MOD 777
AND `int1_unique` NOT IN (SELECT `int1_unique` FROM t1 WHERE `pk` < 1000 OR `is_consistent` = 0)
AND `int2_unique` NOT IN (SELECT `int2_unique` FROM t1 WHERE `pk` < 1000 OR `is_consistent` = 0)
AND `pk` MOD 5 <> 0
AND `is_consistent` = 1
ORDER BY `pk` LIMIT 1;
*** Updating replaced row (if applicable)
COMMIT;