mirror of
https://github.com/MariaDB/server.git
synced 2025-11-03 14:33:32 +03:00
579 lines
13 KiB
Plaintext
579 lines
13 KiB
Plaintext
connect con1,localhost,root,,;
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#
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# Bug#20837 Apparent change of isolation level
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# during transaction
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#
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# Bug#53343 completion_type=1, COMMIT/ROLLBACK
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# AND CHAIN don't preserve the isolation
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# level
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connection default;
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SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;
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CREATE TABLE t1 (s1 INT) ENGINE=InnoDB;
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INSERT INTO t1 VALUES (1),(2);
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COMMIT;
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START TRANSACTION;
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SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;
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ERROR 25001: Transaction characteristics can't be changed while a transaction is in progress
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COMMIT;
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SET @@autocommit=0;
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COMMIT;
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SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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START TRANSACTION;
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SELECT @@tx_isolation;
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@@tx_isolation
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REPEATABLE-READ
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Should be REPEATABLE READ
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SELECT * FROM t1;
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s1
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1
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2
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SELECT @@tx_isolation;
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@@tx_isolation
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REPEATABLE-READ
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Should be REPEATABLE READ
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INSERT INTO t1 VALUES (-1);
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SELECT @@tx_isolation;
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@@tx_isolation
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REPEATABLE-READ
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Should be REPEATABLE READ
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COMMIT;
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START TRANSACTION;
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SELECT * FROM t1;
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s1
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1
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2
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-1
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SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED;
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connection con1;
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START TRANSACTION;
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INSERT INTO t1 VALUES (1000);
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COMMIT;
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connection default;
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We should not be able to read the '1000'
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SELECT * FROM t1;
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s1
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1
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2
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-1
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COMMIT;
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Now, the '1000' should appear.
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START TRANSACTION;
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SELECT * FROM t1;
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s1
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1
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2
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-1
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1000
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COMMIT;
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SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;
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connection default;
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SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
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START TRANSACTION;
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connection con1;
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START TRANSACTION;
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INSERT INTO t1 VALUES (1001);
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COMMIT;
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connection default;
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SELECT COUNT(*) FROM t1 WHERE s1 = 1001;
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COUNT(*)
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1
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Should be 1
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COMMIT AND CHAIN;
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connection con1;
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INSERT INTO t1 VALUES (1002);
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COMMIT;
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connection default;
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SELECT COUNT(*) FROM t1 WHERE s1 = 1002;
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COUNT(*)
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1
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Should be 1
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COMMIT;
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SELECT * FROM t1;
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s1
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1
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2
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-1
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1000
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1001
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1002
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DELETE FROM t1 WHERE s1 >= 1000;
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COMMIT;
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connection default;
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SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
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START TRANSACTION;
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connection con1;
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START TRANSACTION;
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INSERT INTO t1 VALUES (1001);
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COMMIT;
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connection default;
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SELECT COUNT(*) FROM t1 WHERE s1 = 1001;
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COUNT(*)
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1
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Should be 1
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ROLLBACK AND CHAIN;
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connection con1;
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INSERT INTO t1 VALUES (1002);
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COMMIT;
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connection default;
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SELECT COUNT(*) FROM t1 WHERE s1 = 1002;
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COUNT(*)
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1
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Should be 1
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COMMIT;
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SELECT * FROM t1;
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s1
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1
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2
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-1
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1001
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1002
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DELETE FROM t1 WHERE s1 >= 1000;
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COMMIT;
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SET @@completion_type=1;
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connection default;
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SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
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START TRANSACTION;
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connection con1;
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START TRANSACTION;
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INSERT INTO t1 VALUES (1001);
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COMMIT;
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connection default;
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SELECT * FROM t1 WHERE s1 >= 1000;
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s1
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1001
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Should see 1001
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COMMIT AND NO CHAIN;
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default transaction is now in REPEATABLE READ
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connection con1;
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INSERT INTO t1 VALUES (1002);
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COMMIT;
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connection default;
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SELECT * FROM t1 WHERE s1 >= 1000;
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s1
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1001
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1002
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Should see 1001 and 1002
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connection con1;
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INSERT INTO t1 VALUES (1003);
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COMMIT;
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connection default;
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SELECT * FROM t1 WHERE s1 >= 1000;
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s1
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1001
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1002
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Should see 1001 and 1002, but NOT 1003
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COMMIT;
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SELECT * FROM t1;
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s1
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1
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2
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-1
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1001
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1002
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1003
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DELETE FROM t1 WHERE s1 >= 1000;
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COMMIT AND NO CHAIN;
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SET @@completion_type=0;
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COMMIT;
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connection default;
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SET @@completion_type=1;
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COMMIT AND NO CHAIN;
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SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
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START TRANSACTION;
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connection con1;
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START TRANSACTION;
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INSERT INTO t1 VALUES (1001);
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COMMIT;
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connection default;
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SELECT * FROM t1 WHERE s1 >= 1000;
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s1
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1001
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Should see 1001
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ROLLBACK AND NO CHAIN;
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default transaction is now in REPEATABLE READ
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connection con1;
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INSERT INTO t1 VALUES (1002);
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COMMIT;
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connection default;
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SELECT * FROM t1 WHERE s1 >= 1000;
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s1
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1001
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1002
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Should see 1001 and 1002
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connection con1;
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INSERT INTO t1 VALUES (1003);
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COMMIT;
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connection default;
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SELECT * FROM t1 WHERE s1 >= 1000;
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s1
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1001
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1002
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Should see 1001 and 1002, but NOT 1003
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COMMIT;
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SELECT * FROM t1;
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s1
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1
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2
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-1
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1001
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1002
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1003
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DELETE FROM t1 WHERE s1 >= 1000;
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COMMIT AND NO CHAIN;
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SET @@completion_type=0;
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COMMIT;
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connection default;
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SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
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SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;
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START TRANSACTION;
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SELECT * FROM t1;
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s1
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1
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2
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-1
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connection con1;
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INSERT INTO t1 VALUES (1000);
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COMMIT;
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connection default;
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SELECT * FROM t1;
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s1
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1
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2
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-1
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Should get same result as above (i.e should not read '1000')
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COMMIT;
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DELETE FROM t1 WHERE s1 >= 1000;
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COMMIT;
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SET @@completion_type=1;
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COMMIT AND NO CHAIN;
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SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
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START TRANSACTION;
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TRUNCATE TABLE t1;
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INSERT INTO t1 VALUES (1000);
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SELECT * FROM t1;
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s1
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1000
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Should read '1000'
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connection con1;
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INSERT INTO t1 VALUES (1001);
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COMMIT;
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connection default;
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SELECT * FROM t1;
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s1
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1000
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Should only read the '1000' as this transaction is now in REP READ
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COMMIT AND NO CHAIN;
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SET @@completion_type=0;
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COMMIT AND NO CHAIN;
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SET @@autocommit=1;
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COMMIT;
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disconnect con1;
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DROP TABLE t1;
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#
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# End of test cases for Bug#20837
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#
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#
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# WL#5968 Implement START TRANSACTION READ (WRITE|ONLY);
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#
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#
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# Test 1: Check supported syntax
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START TRANSACTION;
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COMMIT;
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START TRANSACTION READ ONLY;
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COMMIT;
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START TRANSACTION READ WRITE;
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COMMIT;
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START TRANSACTION READ ONLY, READ WRITE;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1
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START TRANSACTION READ ONLY, WITH CONSISTENT SNAPSHOT;
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COMMIT;
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START TRANSACTION READ WRITE, WITH CONSISTENT SNAPSHOT;
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COMMIT;
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START TRANSACTION WITH CONSISTENT SNAPSHOT, READ ONLY;
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COMMIT;
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START TRANSACTION WITH CONSISTENT SNAPSHOT, READ WRITE;
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COMMIT;
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START TRANSACTION READ ONLY, WITH CONSISTENT SNAPSHOT, READ WRITE;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1
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SET TRANSACTION READ ONLY;
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SET TRANSACTION READ WRITE;
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SET TRANSACTION ISOLATION LEVEL SERIALIZABLE, READ ONLY;
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SET TRANSACTION ISOLATION LEVEL SERIALIZABLE, READ WRITE;
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SET TRANSACTION READ ONLY, ISOLATION LEVEL READ COMMITTED;
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SET TRANSACTION READ WRITE, ISOLATION LEVEL READ COMMITTED;
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SET TRANSACTION READ ONLY, READ WRITE;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'READ WRITE' at line 1
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COMMIT;
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#
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# Test 2: Check setting of variable.
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SET SESSION TRANSACTION READ WRITE;
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SELECT @@tx_read_only;
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@@tx_read_only
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0
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SET SESSION TRANSACTION READ ONLY;
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SELECT @@tx_read_only;
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@@tx_read_only
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1
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SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ, READ WRITE;
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SELECT @@tx_read_only;
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@@tx_read_only
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0
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SET SESSION TRANSACTION READ ONLY, ISOLATION LEVEL REPEATABLE READ;
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SELECT @@tx_read_only;
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@@tx_read_only
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1
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START TRANSACTION;
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# Not allowed inside a transaction
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SET TRANSACTION READ ONLY;
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ERROR 25001: Transaction characteristics can't be changed while a transaction is in progress
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# But these are allowed.
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SET SESSION TRANSACTION READ ONLY;
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SET GLOBAL TRANSACTION READ ONLY;
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COMMIT;
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SET SESSION TRANSACTION READ WRITE;
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SET GLOBAL TRANSACTION READ WRITE;
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#
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# Test 3: Test that write operations are properly blocked.
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CREATE TABLE t1(a INT);
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CREATE TEMPORARY TABLE temp_t2(a INT);
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SET SESSION TRANSACTION READ ONLY;
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# 1: DDL should be blocked, also on temporary tables.
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CREATE TABLE t3(a INT);
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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ALTER TABLE t1 COMMENT "Test";
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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DROP TABLE t1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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CREATE TEMPORARY TABLE temp_t3(a INT);
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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ALTER TABLE temp_t2 COMMENT "Test";
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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DROP TEMPORARY TABLE temp_t2;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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CREATE FUNCTION f1() RETURNS INT RETURN 1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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DROP FUNCTION f1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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CREATE PROCEDURE p1() BEGIN END;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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DROP PROCEDURE p1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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CREATE VIEW v1 AS SELECT 1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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SET SESSION TRANSACTION READ WRITE;
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CREATE VIEW v1 AS SELECT 1;
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SET SESSION TRANSACTION READ ONLY;
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DROP VIEW v1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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SET SESSION TRANSACTION READ WRITE;
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DROP VIEW v1;
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SET SESSION TRANSACTION READ ONLY;
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RENAME TABLE t1 TO t2;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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RENAME TABLE temp_t2 TO temp_t3;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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TRUNCATE TABLE t1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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CREATE DATABASE db1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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DROP DATABASE db1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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SET SESSION TRANSACTION READ WRITE;
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# 2: DML should be blocked on non-temporary tables.
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START TRANSACTION READ ONLY;
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INSERT INTO t1 VALUES (1), (2);
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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UPDATE t1 SET a= 3;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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DELETE FROM t1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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# 3: DML should be allowed on temporary tables.
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INSERT INTO temp_t2 VALUES (1), (2);
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UPDATE temp_t2 SET a= 3;
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DELETE FROM temp_t2;
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# 4: Queries should not be blocked.
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SELECT * FROM t1;
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a
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SELECT * FROM temp_t2;
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a
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HANDLER t1 OPEN;
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HANDLER t1 READ FIRST;
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a
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HANDLER t1 CLOSE;
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HANDLER temp_t2 OPEN;
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HANDLER temp_t2 READ FIRST;
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a
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HANDLER temp_t2 CLOSE;
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# 5: Prepared statements
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PREPARE stmt FROM "DELETE FROM t1";
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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PREPARE stmt FROM "DELETE FROM temp_t2";
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EXECUTE stmt;
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DEALLOCATE PREPARE stmt;
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COMMIT;
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# 6: Stored routines
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CREATE FUNCTION f1() RETURNS INT
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BEGIN
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DELETE FROM t1;
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RETURN 1;
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END|
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CREATE FUNCTION f2() RETURNS INT
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BEGIN
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DELETE FROM temp_t2;
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RETURN 1;
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END|
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CREATE PROCEDURE p1() DELETE FROM t1;
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CREATE PROCEDURE p2() DELETE FROM temp_t2;
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START TRANSACTION READ ONLY;
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SELECT f1();
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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SELECT f2();
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f2()
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1
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CALL p1();
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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CALL p2();
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COMMIT;
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DROP FUNCTION f1;
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DROP FUNCTION f2;
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DROP PROCEDURE p1;
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DROP PROCEDURE p2;
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# 7: Views
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CREATE VIEW v1 AS SELECT a FROM t1;
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START TRANSACTION READ ONLY;
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INSERT INTO v1 VALUES (1), (2);
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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SELECT * FROM v1;
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a
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COMMIT;
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DROP VIEW v1;
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# 8: LOCK TABLE
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SET SESSION TRANSACTION READ ONLY;
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LOCK TABLE t1 WRITE;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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LOCK TABLE t1 READ;
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UNLOCK TABLES;
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SET SESSION TRANSACTION READ WRITE;
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DROP TABLE temp_t2, t1;
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#
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# Test 4: SET TRANSACTION, CHAINing transactions
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CREATE TABLE t1(a INT);
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SET SESSION TRANSACTION READ ONLY;
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START TRANSACTION;
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DELETE FROM t1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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COMMIT;
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START TRANSACTION READ WRITE;
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DELETE FROM t1;
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COMMIT;
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SET SESSION TRANSACTION READ WRITE;
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SET TRANSACTION READ ONLY;
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START TRANSACTION;
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DELETE FROM t1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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COMMIT;
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START TRANSACTION READ WRITE;
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DELETE FROM t1;
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COMMIT;
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START TRANSACTION READ ONLY;
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SELECT * FROM t1;
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a
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COMMIT AND CHAIN;
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DELETE FROM t1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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COMMIT;
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START TRANSACTION READ ONLY;
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SELECT * FROM t1;
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a
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ROLLBACK AND CHAIN;
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DELETE FROM t1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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COMMIT;
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DROP TABLE t1;
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#
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# Test 5: Test that reserved keyword ONLY is still allowed as
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# identifier - both directly and in SPs.
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SET @only= 1;
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CREATE TABLE t1 (only INT);
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INSERT INTO t1 (only) values (1);
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SELECT only FROM t1 WHERE only = 1;
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only
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1
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DROP TABLE t1;
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CREATE PROCEDURE p1()
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BEGIN
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DECLARE only INT DEFAULT 1;
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END|
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CALL p1();
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DROP PROCEDURE p1;
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#
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# Test 6: Check that XA transactions obey default access mode.
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CREATE TABLE t1(a INT);
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SET TRANSACTION READ ONLY;
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XA START 'test1';
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INSERT INTO t1 VALUES (1);
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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UPDATE t1 SET a=2;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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DELETE FROM t1;
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ERROR 25006: Cannot execute statement in a READ ONLY transaction
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XA END 'test1';
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XA PREPARE 'test1';
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XA COMMIT 'test1';
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DROP TABLE t1;
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#
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# Test 7: SET TRANSACTION inside stored routines
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CREATE PROCEDURE p1() SET SESSION TRANSACTION READ ONLY;
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CALL p1();
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SELECT @@tx_read_only;
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@@tx_read_only
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1
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SET SESSION TRANSACTION READ WRITE;
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DROP PROCEDURE p1;
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CREATE PROCEDURE p1() SET SESSION TRANSACTION READ ONLY,
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ISOLATION LEVEL SERIALIZABLE;
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CALL p1();
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SELECT @@tx_read_only;
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@@tx_read_only
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1
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SET SESSION TRANSACTION READ WRITE, ISOLATION LEVEL REPEATABLE READ;
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DROP PROCEDURE p1;
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CREATE FUNCTION f1() RETURNS INT
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BEGIN
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SET SESSION TRANSACTION READ ONLY;
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RETURN 1;
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END|
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SELECT f1();
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f1()
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1
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SELECT @@tx_read_only;
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@@tx_read_only
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1
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SET SESSION TRANSACTION READ WRITE;
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DROP FUNCTION f1;
|
|
CREATE FUNCTION f1() RETURNS INT
|
|
BEGIN
|
|
SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE, READ ONLY;
|
|
RETURN 1;
|
|
END|
|
|
SELECT f1();
|
|
f1()
|
|
1
|
|
SELECT @@tx_read_only;
|
|
@@tx_read_only
|
|
1
|
|
SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ, READ WRITE;
|
|
DROP FUNCTION f1;
|
|
#
|
|
# Test 8: SET TRANSACTION and auto-commit
|
|
SELECT @@autocommit;
|
|
@@autocommit
|
|
1
|
|
CREATE TABLE t1(a INT) engine=InnoDB;
|
|
SET TRANSACTION READ ONLY;
|
|
SELECT * FROM t1;
|
|
a
|
|
# This statement should work, since last statement committed.
|
|
INSERT INTO t1 VALUES (1);
|
|
DROP TABLE t1;
|