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'#--------------------FN_DYNVARS_039_01-------------------------#' SET global innodb_autoinc_lock_mode = 1; ERROR HY000: Variable 'innodb_autoinc_lock_mode' is a read only variable '--innodb_autoinc_lock_mode is 1 (consecutive)--' SELECT @@global.innodb_autoinc_lock_mode; @@global.innodb_autoinc_lock_mode 1 DROP TABLE IF EXISTS t1; CREATE TABLE t1( a INT AUTO_INCREMENT PRIMARY KEY, b CHAR ) ENGINE=INNODB, AUTO_INCREMENT=100; INSERT INTO t1 (a,b) VALUES (5,'a'), (NULL,'b'), (1,'c'), (NULL,'d'); INSERT INTO t1 (a,b) VALUES (NULL,'e'); 'the new auto incremented value should be 104' SELECT * FROM t1; a b 1 c 5 a 100 b 101 d 104 e DROP TABLE t1;