SET default_storage_engine=InnoDB; CREATE TABLE t_min ( c01 TINYINT, c02 TINYINT UNSIGNED, c03 SMALLINT, c04 SMALLINT UNSIGNED, c05 MEDIUMINT, c06 MEDIUMINT UNSIGNED, c07 INT, c08 INT UNSIGNED, c09 BIGINT, c10 BIGINT UNSIGNED, PRIMARY KEY(c01, c02, c03, c04, c05, c06, c07, c08, c09, c10) );; INSERT INTO t_min VALUES (-128, 0, -32768, 0, -8388608, 0, -2147483648, 0, -9223372036854775808, 0); CREATE TABLE t_max ( c01 TINYINT, c02 TINYINT UNSIGNED, c03 SMALLINT, c04 SMALLINT UNSIGNED, c05 MEDIUMINT, c06 MEDIUMINT UNSIGNED, c07 INT, c08 INT UNSIGNED, c09 BIGINT, c10 BIGINT UNSIGNED, PRIMARY KEY(c01, c02, c03, c04, c05, c06, c07, c08, c09, c10) );; INSERT INTO t_max VALUES (127, 255, 32767, 65535, 8388607, 16777215, 2147483647, 4294967295, 9223372036854775807, 18446744073709551615); CREATE TABLE ```t'\"_str` ( c1 VARCHAR(32), c2 VARCHAR(32), c3 VARCHAR(32), c4 VARCHAR(32), c5 VARCHAR(32), c6 VARCHAR(32), c7 VARCHAR(32), PRIMARY KEY(c1, c2, c3, c4, c5, c6, c7) ); INSERT INTO ```t'\"_str` VALUES ('1', 'abc', '''abc', 'abc''', 'a''bc', 'a''bc''', '''abc'''''); INSERT INTO ```t'\"_str` VALUES ('2', 'abc', '"abc', 'abc"', 'a"bc', 'a"bc"', '"abc""'); INSERT INTO ```t'\"_str` VALUES ('3', 'abc', '\\abc', 'abc\\', 'a\\bc', 'a\\bc\\', '\\abc\\\\'); INSERT INTO ```t'\"_str` VALUES ('4', 'abc', 0x00616263, 0x61626300, 0x61006263, 0x6100626300, 0x610062630000); connect con_lock,localhost,root,,; connect con_min_trylock,localhost,root,,; connect con_max_trylock,localhost,root,,; connect con_str_insert_supremum,localhost,root,,; connect con_str_lock_row1,localhost,root,,; connect con_str_lock_row2,localhost,root,,; connect con_str_lock_row3,localhost,root,,; connect con_str_lock_row4,localhost,root,,; connect con_verify_innodb_locks,localhost,root,,; connection con_lock; SET autocommit=0; SELECT * FROM t_min FOR UPDATE; c01 c02 c03 c04 c05 c06 c07 c08 c09 c10 -128 0 -32768 0 -8388608 0 -2147483648 0 -9223372036854775808 0 SELECT * FROM t_max FOR UPDATE; c01 c02 c03 c04 c05 c06 c07 c08 c09 c10 127 255 32767 65535 8388607 16777215 2147483647 4294967295 9223372036854775807 18446744073709551615 SELECT * FROM ```t'\"_str` FOR UPDATE; c1 c2 c3 c4 c5 c6 c7 1 abc 'abc abc' a'bc a'bc' 'abc'' 2 abc "abc abc" a"bc a"bc" "abc"" 3 abc \abc abc\ a\bc a\bc\ \abc\\ 4 abc abc abc abc abc abc connection con_min_trylock; SELECT * FROM t_min FOR UPDATE; connection con_max_trylock; SELECT * FROM t_max FOR UPDATE; connection con_str_insert_supremum; INSERT INTO ```t'\"_str` VALUES ('z', 'z', 'z', 'z', 'z', 'z', 'z'); connection con_str_lock_row1; SELECT * FROM ```t'\"_str` WHERE c1 = '1' FOR UPDATE; connection con_str_lock_row2; SELECT * FROM ```t'\"_str` WHERE c1 = '2' FOR UPDATE; connection con_str_lock_row3; SELECT * FROM ```t'\"_str` WHERE c1 = '3' FOR UPDATE; connection con_str_lock_row4; SELECT * FROM ```t'\"_str` WHERE c1 = '4' FOR UPDATE; connection con_verify_innodb_locks; SELECT lock_mode, lock_type, lock_table, lock_index, lock_rec, lock_data FROM INFORMATION_SCHEMA.INNODB_LOCKS ORDER BY lock_data; lock_mode lock_type lock_table lock_index lock_rec lock_data X RECORD `test`.```t'\"_str` PRIMARY 1 # X RECORD `test`.```t'\"_str` PRIMARY 1 # X RECORD `test`.```t'\"_str` PRIMARY 2 # X RECORD `test`.```t'\"_str` PRIMARY 2 # X RECORD `test`.```t'\"_str` PRIMARY 3 # X RECORD `test`.```t'\"_str` PRIMARY 3 # X RECORD `test`.```t'\"_str` PRIMARY 4 # X RECORD `test`.```t'\"_str` PRIMARY 4 # X RECORD `test`.```t'\"_str` PRIMARY 5 # X RECORD `test`.```t'\"_str` PRIMARY 5 # X RECORD `test`.`t_max` PRIMARY 2 # X RECORD `test`.`t_max` PRIMARY 2 # X RECORD `test`.`t_min` PRIMARY 2 # X RECORD `test`.`t_min` PRIMARY 2 # SELECT lock_table,COUNT(*) FROM INFORMATION_SCHEMA.INNODB_LOCKS GROUP BY lock_table; lock_table COUNT(*) `test`.`t_max` 2 `test`.`t_min` 2 `test`.```t'\"_str` 10 set @save_sql_mode = @@sql_mode; SET SQL_MODE='ANSI_QUOTES'; SELECT lock_table,COUNT(*) FROM INFORMATION_SCHEMA.INNODB_LOCKS GROUP BY lock_table; lock_table COUNT(*) "test"."t_max" 2 "test"."t_min" 2 "test"."`t'\""_str" 10 SET @@sql_mode=@save_sql_mode; connection default; disconnect con_lock; disconnect con_min_trylock; disconnect con_max_trylock; disconnect con_str_insert_supremum; disconnect con_str_lock_row1; disconnect con_str_lock_row2; disconnect con_str_lock_row3; disconnect con_str_lock_row4; disconnect con_verify_innodb_locks; DROP TABLE t_min, t_max, ```t'\"_str`; DESCRIBE INFORMATION_SCHEMA.INNODB_TRX; Field Type Null Key Default Extra trx_id bigint(21) unsigned NO NULL trx_state varchar(13) NO NULL trx_started datetime NO NULL trx_requested_lock_id varchar(81) YES NULL trx_wait_started datetime YES NULL trx_weight bigint(21) unsigned NO NULL trx_mysql_thread_id bigint(21) unsigned NO NULL trx_query varchar(1024) YES NULL trx_operation_state varchar(64) YES NULL trx_tables_in_use bigint(21) unsigned NO NULL trx_tables_locked bigint(21) unsigned NO NULL trx_lock_structs bigint(21) unsigned NO NULL trx_lock_memory_bytes bigint(21) unsigned NO NULL trx_rows_locked bigint(21) unsigned NO NULL trx_rows_modified bigint(21) unsigned NO NULL trx_concurrency_tickets bigint(21) unsigned NO NULL trx_isolation_level enum('READ UNCOMMITTED','READ COMMITTED','REPEATABLE READ','SERIALIZABLE') NO NULL trx_unique_checks int(1) NO NULL trx_foreign_key_checks int(1) NO NULL trx_last_foreign_key_error varchar(256) YES NULL trx_is_read_only int(1) NO NULL trx_autocommit_non_locking int(1) NO NULL DROP TABLE IF EXISTS t1; CREATE TABLE t1 ( c01 INT, c02 INT, PRIMARY KEY (c01) ) ENGINE = InnoDB; INSERT INTO t1 VALUES (1,2),(2,4),(3,6),(4,8); CREATE TABLE t2 ( c01 INT, c02 INT, PRIMARY KEY (c01), FOREIGN KEY fk1 (c02) REFERENCES t1 (c01) ) ENGINE = InnoDB; INSERT INTO t2 VALUES (1,1),(2,2),(3,3); connect con_trx,localhost,root,,; connect con_verify_innodb_trx,localhost,root,,; connection con_trx; SET autocommit=0; INSERT INTO t1 VALUES (5,10); SELECT * FROM t1 FOR UPDATE; c01 c02 1 2 2 4 3 6 4 8 5 10 connection con_verify_innodb_trx; SELECT trx_state, trx_weight, trx_tables_in_use, trx_tables_locked, trx_rows_locked, trx_rows_modified, trx_concurrency_tickets, trx_isolation_level, trx_unique_checks, trx_foreign_key_checks FROM INFORMATION_SCHEMA.INNODB_TRX; trx_state trx_weight trx_tables_in_use trx_tables_locked trx_rows_locked trx_rows_modified trx_concurrency_tickets trx_isolation_level trx_unique_checks trx_foreign_key_checks RUNNING 3 0 1 6 1 0 REPEATABLE READ 1 1 connection con_trx; ROLLBACK; SET FOREIGN_KEY_CHECKS = 0; SET UNIQUE_CHECKS = 0; SET TRANSACTION ISOLATION LEVEL SERIALIZABLE; BEGIN; INSERT INTO t1 VALUES (6,12); connection con_verify_innodb_trx; SELECT trx_isolation_level, trx_unique_checks, trx_foreign_key_checks FROM INFORMATION_SCHEMA.INNODB_TRX; trx_isolation_level trx_unique_checks trx_foreign_key_checks SERIALIZABLE 0 0 connection con_trx; ROLLBACK; SET FOREIGN_KEY_CHECKS = 1; SET UNIQUE_CHECKS = 1; BEGIN; INSERT INTO t2 VALUES (4,10); ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk1` FOREIGN KEY (`c02`) REFERENCES `t1` (`c01`)) connection con_verify_innodb_trx; SELECT trx_state, trx_isolation_level, trx_last_foreign_key_error FROM INFORMATION_SCHEMA.INNODB_TRX; trx_state trx_isolation_level trx_last_foreign_key_error RUNNING REPEATABLE READ `test`.`t2`, CONSTRAINT `fk1` FOREIGN KEY (`c02`) REFERENCES `t1` (`c01`) connection default; disconnect con_trx; disconnect con_verify_innodb_trx; DROP TABLE t2; DROP TABLE t1;