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synced 2025-08-08 11:22:35 +03:00
MDEV-12067 flashback does not correcly revert update/replace statements
Problem ------- For one-statement contains multiple row events, Flashback didn't reverse the sequence of row events inside one-statement. Solution -------- Using a new array 'events_in_stmt' to store the row events of one-statement, when parsed the last one event, then print from the last one to the first one. In the same time, fixed another bug, without -vv will not insert the table_map into print_event_info->m_table_map, then change_to_flashback_event() will not execute because of Table_map_log_event is empty.
This commit is contained in:
Lixun Peng
@@ -6,7 +6,7 @@ DROP TABLE IF EXISTS t1;
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# We need a fixed timestamp to avoid varying results.
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#
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SET timestamp=1000000000;
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#
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# < CASE 1 >
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# Delete all existing binary logs.
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#
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RESET MASTER;
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@@ -20,22 +20,22 @@ c06 char(10),
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c07 varchar(20),
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c08 TEXT
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) ENGINE=InnoDB;
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#
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# < CASE 1 >
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# Insert data to t1
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#
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INSERT INTO t1 VALUES(0,0,0,0,0,'','','');
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INSERT INTO t1 VALUES(1,2,3,4,5, "abc", "abcdefg", "abcedfghijklmnopqrstuvwxyz");
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INSERT INTO t1 VALUES(127, 32767, 8388607, 2147483647, 9223372036854775807, repeat('a', 10), repeat('a', 20), repeat('a', 255));
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#
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# < CASE 1 >
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# Update t1
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#
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UPDATE t1 SET c01=100 WHERE c02=0 OR c03=3;
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#
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# < CASE 1 >
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# Clear t1
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#
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DELETE FROM t1;
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FLUSH LOGS;
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#
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# < CASE 1 >
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# Show mysqlbinlog result without -B
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#
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/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;
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@@ -258,7 +258,7 @@ DELIMITER ;
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ROLLBACK /* added by mysqlbinlog */;
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/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
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/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;
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#
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# < CASE 1 >
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# Show mysqlbinlog result with -B
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#
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/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;
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@@ -426,14 +426,14 @@ DELIMITER ;
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ROLLBACK /* added by mysqlbinlog */;
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/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
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/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;
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#
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# < CASE 1 >
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# Insert data to t1
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#
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TRUNCATE TABLE t1;
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INSERT INTO t1 VALUES(0,0,0,0,0,'','','');
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INSERT INTO t1 VALUES(1,2,3,4,5, "abc", "abcdefg", "abcedfghijklmnopqrstuvwxyz");
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INSERT INTO t1 VALUES(127, 32767, 8388607, 2147483647, 9223372036854775807, repeat('a', 10), repeat('a', 20), repeat('a', 60));
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#
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# < CASE 1 >
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# Delete all existing binary logs.
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#
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RESET MASTER;
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@@ -442,7 +442,7 @@ c01 c02 c03 c04 c05 c06 c07 c08
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0 0 0 0 0
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1 2 3 4 5 abc abcdefg abcedfghijklmnopqrstuvwxyz
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127 32767 8388607 2147483647 9223372036854775807 aaaaaaaaaa aaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
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#
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# < CASE 1 >
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# Operate some data
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#
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UPDATE t1 SET c01=20;
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@@ -450,7 +450,7 @@ UPDATE t1 SET c02=200;
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UPDATE t1 SET c03=2000;
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DELETE FROM t1;
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FLUSH LOGS;
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#
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# < CASE 1 >
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# Flashback & Check the result
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#
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SELECT * FROM t1;
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@@ -459,7 +459,7 @@ c01 c02 c03 c04 c05 c06 c07 c08
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1 2 3 4 5 abc abcdefg abcedfghijklmnopqrstuvwxyz
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0 0 0 0 0
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RESET MASTER;
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#
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# < CASE 2 >
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# UPDATE multi-rows in one event
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#
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BEGIN;
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@@ -467,7 +467,7 @@ UPDATE t1 SET c01=10 WHERE c01=0;
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UPDATE t1 SET c01=20 WHERE c01=10;
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COMMIT;
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FLUSH LOGS;
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#
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# < CASE 2 >
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# Flashback & Check the result
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#
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SELECT * FROM t1;
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@@ -476,7 +476,7 @@ c01 c02 c03 c04 c05 c06 c07 c08
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1 2 3 4 5 abc abcdefg abcedfghijklmnopqrstuvwxyz
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0 0 0 0 0
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DROP TABLE t1;
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#
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# < CASE 3 >
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# Self-referencing foreign keys
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#
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CREATE TABLE t1 (a INT PRIMARY KEY, b INT, FOREIGN KEY my_fk(b) REFERENCES t1(a)) ENGINE=InnoDB;
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@@ -493,7 +493,7 @@ a b
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RESET MASTER;
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DELETE FROM t1 ORDER BY a DESC;
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FLUSH LOGS;
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#
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# < CASE 3 >
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# Flashback & Check the result
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#
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SELECT * FROM t1;
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@@ -502,9 +502,180 @@ a b
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2 1
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3 2
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4 3
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DROP TABLE t1;
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# < CASE 4 >
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# Trigger
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#
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CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
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CREATE TABLE t2 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
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BEGIN;
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INSERT INTO t1 VALUES (1, NULL);
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INSERT INTO t1 VALUES (2, 1), (3, 2), (4, 3);
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INSERT INTO t2 VALUES (6, 7), (7, 8), (8, 9);
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COMMIT;
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SELECT * FROM t1;
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a b
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1 NULL
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2 1
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3 2
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4 3
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SELECT * FROM t2;
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a b
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6 7
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7 8
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8 9
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CREATE TRIGGER trg1 BEFORE INSERT ON t1 FOR EACH ROW DELETE FROM t2 WHERE a = NEW.b;
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RESET MASTER;
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INSERT INTO t1 VALUES (5, 6), (7, 8);
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SELECT * FROM t1;
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a b
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1 NULL
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2 1
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3 2
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4 3
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5 6
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7 8
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SELECT * FROM t2;
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a b
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7 8
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FLUSH LOGS;
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# < CASE 4 >
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# Flashback & Check the result
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#
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SELECT * FROM t1;
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a b
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1 NULL
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2 1
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3 2
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4 3
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SELECT * FROM t2;
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a b
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6 7
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7 8
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8 9
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DROP TRIGGER trg1;
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DROP TABLE t1;
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DROP TABLE t2;
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# < CASE 5 >
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# REPLCAE Queries
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#
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CREATE TABLE t1 (a INT PRIMARY KEY, b INT, UNIQUE uk(b)) ENGINE=InnoDB;
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BEGIN;
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INSERT INTO t1 VALUES (1, NULL);
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INSERT INTO t1 VALUES (2, 1), (3, 2), (4, 3);
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INSERT INTO t1 VALUES (5, 4), (6, 5), (7, 6);
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COMMIT;
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SELECT * FROM t1;
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a b
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1 NULL
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2 1
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3 2
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4 3
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5 4
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6 5
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7 6
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RESET MASTER;
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REPLACE INTO t1 VALUES (3, 100);
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REPLACE INTO t1 SET a=4, b=200;
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SELECT * FROM t1;
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a b
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1 NULL
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2 1
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5 4
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6 5
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7 6
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3 100
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4 200
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REPLACE INTO t1 VALUES (5,5);
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SELECT * FROM t1;
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a b
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1 NULL
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2 1
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5 5
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7 6
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3 100
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4 200
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FLUSH LOGS;
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# < CASE 5 >
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# Flashback & Check the result
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#
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SELECT * FROM t1;
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a b
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1 NULL
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2 1
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3 2
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4 3
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5 4
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6 5
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7 6
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DROP TABLE t1;
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# < CASE 6 >
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# Test Case from MDEV-21067
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#
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CREATE DATABASE world;
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CREATE TABLE world.City (
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ID INT AUTO_INCREMENT PRIMARY KEY,
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Name VARCHAR(64),
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CountryCode VARCHAR(64),
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District VARCHAR(64),
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Population INT
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) ENGINE=InnoDB;
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CREATE TABLE test.test (
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ID INT AUTO_INCREMENT PRIMARY KEY,
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REC VARCHAR(64),
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ts TIMESTAMP
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) ENGINE=InnoDB;
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INSERT INTO world.City VALUES (NULL, 'Davenport', 'USA', 'Iowa', 100);
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INSERT INTO world.City VALUES (NULL, 'Boulder', 'USA', 'Colorado', 1000);
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INSERT INTO world.City VALUES (NULL, 'Gweru', 'ZWE', 'Midlands', 10000);
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RESET MASTER;
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CHECKSUM TABLE world.City;
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Table Checksum
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world.City 563256876
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INSERT INTO test.test VALUES (NULL, 'Good record 1', CURRENT_TIMESTAMP());
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INSERT INTO world.City VALUES (NULL, 'Wrong value 1', '000', 'Wrong', 0);
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INSERT INTO world.City VALUES (NULL, 'Wrong value 2', '000', 'Wrong', 0) , (NULL, 'Wrong value 3', '000', 'Wrong', 0);
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INSERT INTO test.test VALUES (NULL, 'Good record 2', CURRENT_TIMESTAMP());
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UPDATE world.City SET Population = 99999999 WHERE ID IN (1, 2, 3);
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INSERT INTO test.test VALUES (NULL, 'Good record 3', CURRENT_TIMESTAMP());
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DELETE FROM world.City WHERE ID BETWEEN 1 AND 2;
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INSERT INTO test.test VALUES (NULL, 'Good record 5', CURRENT_TIMESTAMP());
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REPLACE INTO world.City VALUES (4074, 'Wrong value 4', '000', 'Wrong', 0);
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REPLACE INTO world.City VALUES (4078, 'Wrong value 5', '000', 'Wrong', 0), (NULL, 'Wrong value 6', '000', 'Wrong', 0);
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INSERT INTO test.test VALUES (NULL, 'Good record 6', CURRENT_TIMESTAMP());
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INSERT INTO world.City
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SELECT NULL, Name, CountryCode, District, Population FROM world.City WHERE ID BETWEEN 2 AND 10;
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INSERT INTO test.test VALUES (NULL, 'Good record 7', CURRENT_TIMESTAMP());
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INSERT INTO test.test VALUES (NULL, 'Good record 8', CURRENT_TIMESTAMP());
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DELETE FROM world.City;
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INSERT INTO test.test VALUES (NULL, 'Good record 9', CURRENT_TIMESTAMP());
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FLUSH LOGS;
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# < CASE 6 >
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# Flashback & Check the result
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#
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SELECT * FROM world.City;
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ID Name CountryCode District Population
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1 Davenport USA Iowa 100
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2 Boulder USA Colorado 1000
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3 Gweru ZWE Midlands 10000
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SELECT * FROM test.test;
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ID REC ts
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1 Good record 1 2001-09-09 09:46:40
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2 Good record 2 2001-09-09 09:46:40
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3 Good record 3 2001-09-09 09:46:40
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4 Good record 5 2001-09-09 09:46:40
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5 Good record 6 2001-09-09 09:46:40
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6 Good record 7 2001-09-09 09:46:40
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7 Good record 8 2001-09-09 09:46:40
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8 Good record 9 2001-09-09 09:46:40
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CHECKSUM TABLE world.City;
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Table Checksum
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world.City 563256876
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DROP TABLE test.test;
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DROP TABLE world.City;
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DROP DATABASE world;
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SET binlog_format=statement;
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Warnings:
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Warning 1105 MariaDB Galera and flashback do not support binlog format: STATEMENT
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SET GLOBAL binlog_format=statement;
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ERROR HY000: Flashback does not support binlog_format STATEMENT
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DROP TABLE t1;
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