mirror of
https://github.com/MariaDB/server.git
synced 2025-11-03 14:33:32 +03:00
95 lines
2.2 KiB
SQL
95 lines
2.2 KiB
SQL
--disable_warnings
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DROP TABLE IF EXISTS t1, t2;
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DROP VIEW IF EXISTS v1;
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--enable_warnings
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SET autocommit=0;
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# Create additional connections used through test
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CONNECT (root1, localhost, root,,);
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SET autocommit=0;
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--echo connection default;
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CONNECTION default;
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eval CREATE TABLE t1 (k INT NOT NULL PRIMARY KEY, i INT, j INT, l INT) ENGINE=$engine;
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eval $indext1;
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eval CREATE TABLE t2 (k INT NOT NULL PRIMARY KEY, i INT, j INT, l INT) ENGINE=$engine;
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eval $indext2;
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DELIMITER |;
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CREATE PROCEDURE fill_t1 (IN upb int)
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BEGIN
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DECLARE cnt int DEFAULT 0;
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WHILE cnt < upb DO
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INSERT INTO t1 VALUES (cnt, cnt+100, cnt, cnt+100);
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SET cnt= cnt+1;
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END WHILE;
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END;
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CREATE FUNCTION half_t1() RETURNS int
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BEGIN
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DECLARE res int DEFAULT 0;
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SELECT count(*)/2 INTO res FROM t1;
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RETURN res;
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END;
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CREATE PROCEDURE fill_t2 (IN upb int)
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BEGIN
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DECLARE cnt int DEFAULT 0;
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WHILE cnt < upb DO
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INSERT INTO t2 VALUES (cnt, cnt+100, cnt, cnt+100);
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SET cnt= cnt+1;
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END WHILE;
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END;
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CREATE FUNCTION half_t2() RETURNS int
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BEGIN
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DECLARE res int DEFAULT 0;
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SELECT count(*)/2 INTO res FROM t2;
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RETURN res;
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END;
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DELIMITER ;|
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CALL fill_t1 (10);
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CALL fill_t2 (10);
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COMMIT;
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SELECT @@global.tx_isolation;
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# With the two separate selects (without join) the differs from
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# that select with join.
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# Both transaction are able to update the tables
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eval EXPLAIN $select;
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eval $select;
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--echo connection root1;
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CONNECTION root1;
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SELECT k from t1 WHERE k < half_t1();
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SELECT k from t1 WHERE k >= half_t1();
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UPDATE t1,t2 SET t1.i=1111,t2.i=2222 WHERE t1.k < half_t1() AND t2.i=t1.i;
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SELECT * FROM t1 ORDER BY t1.k;
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SELECT * FROM t2 ORDER BY t2.k;
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--echo connection default;
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CONNECTION default;
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UPDATE t1,t2 SET t1.i=3333,t2.i=4444 WHERE t1.k >= half_t1() AND t2.i=t1.i;
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SELECT * FROM t1 ORDER BY t1.k;
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SELECT * FROM t2 ORDER BY t2.k;
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COMMIT;
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--echo connection root1;
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CONNECTION root1;
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ROLLBACK;
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--echo connection default;
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CONNECTION default;
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SELECT * FROM t1 ORDER BY t1.k;
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SELECT * FROM t2 ORDER BY t2.k;
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--echo connection root1;
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CONNECTION root1;
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SELECT * FROM t1 ORDER BY t1.k;
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SELECT * FROM t2 ORDER BY t2.k;
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DISCONNECT root1;
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--echo connection default;
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CONNECTION default;
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DROP VIEW IF EXISTS v1;
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DROP TABLE t1, t2;
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#DROP VIEW v1;
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