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DROP TABLE IF EXISTS t1, t2;
SET autocommit=0;
SET autocommit=0;
connection default;
CREATE TABLE t1 (k INT NOT NULL PRIMARY KEY, i INT, j INT, l INT) ENGINE=NDB;
INSERT INTO t1 VALUES (1,123,1,123);
INSERT INTO t1 VALUES (2,124,2,124);
INSERT INTO t1 VALUES (3,125,3,125);
INSERT INTO t1 VALUES (4,126,4,126);
CREATE INDEX ixi ON t1 (i);
CREATE TABLE t2 (k INT NOT NULL PRIMARY KEY, i INT, j INT, l INT) ENGINE=NDB;
INSERT INTO t2 VALUES (1,123,1,123);
INSERT INTO t2 VALUES (2,124,2,124);
INSERT INTO t2 VALUES (3,125,3,125);
INSERT INTO t2 VALUES (4,126,4,126);
CREATE INDEX ixi ON t2 (i);
COMMIT;
SELECT @@global.tx_isolation;
@@global.tx_isolation
REPEATABLE-READ
EXPLAIN SELECT t1.i,t2.i FROM t1 ignore index (ixi),t2 IGNORE INDEX (ixi) WHERE t1.i<125 AND t2.i=t1.i LOCK IN SHARE MODE;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using where
1 SIMPLE t2 ALL NULL NULL NULL NULL 4 Using where
SELECT t1.i,t2.i FROM t1 ignore index (ixi),t2 IGNORE INDEX (ixi) WHERE t1.i<125 AND t2.i=t1.i LOCK IN SHARE MODE;
i i
123 123
124 124
connection root1;
UPDATE t1,t2 SET t1.i=225,t2.i=225 WHERE t1.i=125 AND t2.i=t1.i;
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