drop table if exists t1; Warnings: Note 1051 Unknown table 'test.t1' # # Test alter sequence # CREATE SEQUENCE t1 nocache engine=myisam; select * from t1; next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count 1 1 9223372036854775806 1 1 0 0 0 select next value for t1; next value for t1 1 alter sequence t1 start=50; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 50 minvalue 1 maxvalue 9223372036854775806 increment by 1 nocache nocycle ENGINE=MyISAM select * from t1; next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count 2 1 9223372036854775806 50 1 0 0 0 select next value for t1; next value for t1 2 alter sequence t1 minvalue=-100; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 50 minvalue -100 maxvalue 9223372036854775806 increment by 1 nocache nocycle ENGINE=MyISAM select * from t1; next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count 3 -100 9223372036854775806 50 1 0 0 0 alter sequence t1 minvalue=100 start=100; ERROR HY000: Sequence 'test.t1' has out of range value for options alter sequence t1 minvalue=100 start=100 restart=100; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 100 minvalue 100 maxvalue 9223372036854775806 increment by 1 nocache nocycle ENGINE=MyISAM select * from t1; next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count 100 100 9223372036854775806 100 1 0 0 0 alter sequence t1 maxvalue=500; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 100 minvalue 100 maxvalue 500 increment by 1 nocache nocycle ENGINE=MyISAM select * from t1; next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count 100 100 500 100 1 0 0 0 drop sequence t1; CREATE SEQUENCE t1 engine=myisam; alter sequence t1 nocache; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 1 minvalue 1 maxvalue 9223372036854775806 increment by 1 nocache nocycle ENGINE=MyISAM alter sequence t1 cache=100; flush tables; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 1 minvalue 1 maxvalue 9223372036854775806 increment by 1 cache 100 nocycle ENGINE=MyISAM alter sequence t1 nocache; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 1 minvalue 1 maxvalue 9223372036854775806 increment by 1 nocache nocycle ENGINE=MyISAM flush tables; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 1 minvalue 1 maxvalue 9223372036854775806 increment by 1 nocache nocycle ENGINE=MyISAM select * from t1; next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count 1 1 9223372036854775806 1 1 0 0 0 select next value for t1; next value for t1 1 select next value for t1; next value for t1 2 select next value for t1; next value for t1 3 select next_not_cached_value, cycle_count from t1; next_not_cached_value cycle_count 4 0 drop sequence t1; CREATE SEQUENCE t1 maxvalue=100 engine=myisam; alter sequence t1 no maxvalue; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 1 minvalue 1 maxvalue 9223372036854775806 increment by 1 cache 1000 nocycle ENGINE=MyISAM select * from t1; next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count 1 1 9223372036854775806 1 1 1000 0 0 alter sequence t1 cycle; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 1 minvalue 1 maxvalue 9223372036854775806 increment by 1 cache 1000 cycle ENGINE=MyISAM alter sequence t1 nocycle; alter sequence t1 start=15 restart minvalue=10 maxvalue=20 cycle; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 15 minvalue 10 maxvalue 20 increment by 1 cache 1000 cycle ENGINE=MyISAM select * from t1; next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count 15 10 20 15 1 1000 1 0 select NEXT VALUE for t1 from seq_1_to_10; NEXT VALUE for t1 15 16 17 18 19 20 10 11 12 13 alter sequence t1 restart with 17 minvalue=10 maxvalue=20 cycle; select NEXT VALUE for t1 from seq_1_to_10; NEXT VALUE for t1 17 18 19 20 10 11 12 13 14 15 drop sequence t1; CREATE SEQUENCE t1 maxvalue=100; alter sequence t1 increment=-2 start with 50 minvalue=-100; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 50 minvalue -100 maxvalue 100 increment by -2 cache 1000 nocycle ENGINE=MyISAM select * from t1; next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count 1 -100 100 50 -2 1000 0 0 select NEXT VALUE for t1 from seq_1_to_10; NEXT VALUE for t1 1 -1 -3 -5 -7 -9 -11 -13 -15 -17 drop sequence t1; # # InnoDB (some things work different with InnoDB) CREATE SEQUENCE t1 cache 10 engine=innodb; select * from t1; next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count 1 1 9223372036854775806 1 1 10 0 0 select next value for t1; next value for t1 1 alter sequence t1 start=100; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 100 minvalue 1 maxvalue 9223372036854775806 increment by 1 cache 10 nocycle ENGINE=InnoDB select * from t1; next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count 11 1 9223372036854775806 100 1 10 0 0 select next value for t1; next value for t1 11 drop sequence t1; # # ALTER TABLE # CREATE SEQUENCE t1 engine=innodb; select next value for t1; next value for t1 1 alter table t1 rename t2; select next value for t2; next value for t2 1001 rename table t2 to t1; select next value for t1; next value for t1 2001 alter table t1 comment="foo"; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 1 minvalue 1 maxvalue 9223372036854775806 increment by 1 cache 1000 nocycle ENGINE=InnoDB COMMENT='foo' alter table t1 engine=myisam; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 1 minvalue 1 maxvalue 9223372036854775806 increment by 1 cache 1000 nocycle ENGINE=MyISAM COMMENT='foo' alter table t1 engine=innodb; show create sequence t1; Table Create Table t1 CREATE SEQUENCE `t1` start with 1 minvalue 1 maxvalue 9223372036854775806 increment by 1 cache 1000 nocycle ENGINE=InnoDB COMMENT='foo' select * from t1; next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count 3001 1 9223372036854775806 1 1 1000 0 0 drop sequence t1; CREATE SEQUENCE t1 engine=myisam; alter sequence t1 minvalue=100; ERROR HY000: Sequence 'test.t1' has out of range value for options drop sequence t1; CREATE SEQUENCE t1 engine=myisam; alter sequence t1 minvalue=25 maxvalue=20; ERROR HY000: Sequence 'test.t1' has out of range value for options drop sequence t1; create table t1 (a int); alter sequence t1 minvalue=100; ERROR 42S02: 'test.t1' is not a SEQUENCE drop table t1; alter sequence if exists t1 minvalue=100; ERROR 42S02: Unknown SEQUENCE: 't1' alter sequence t1 minvalue=100; ERROR 42S02: Unknown SEQUENCE: 't1' create sequence t1; alter sequence t1; 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 drop sequence t1; CREATE SEQUENCE t1 maxvalue=100; alter sequence t1 increment=-2 start with 50; select next value for t1; next value for t1 1 select next value for t1; ERROR HY000: Sequence 'test.t1' has run out select * from t1; next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count 0 1 100 50 -2 1000 0 0 alter sequence t1 restart; select next value for t1; next value for t1 50 alter sequence t1 restart with 90; select next value for t1; next value for t1 90 drop sequence t1; CREATE SEQUENCE t1 engine=innodb; ALTER IGNORE TABLE t1 ADD CHECK (start_value < minimum_value); ERROR HY000: Sequence 'test.t1' table structure is invalid (Sequence tables cannot have any constraints) DROP SEQUENCE t1; CREATE SEQUENCE s; ALTER TABLE s ORDER BY cache_size; ERROR HY000: Sequence 'test.s' table structure is invalid (ORDER BY) SELECT NEXTVAL(s); NEXTVAL(s) 1 DROP SEQUENCE s; # # MDEV-31607 ER_DUP_KEY in mysql.table_stats upon REANME on sequence # CREATE SEQUENCE s1 ENGINE=InnoDB; CREATE SEQUENCE s2 ENGINE=InnoDB; SHOW CREATE SEQUENCE s1; Table Create Table s1 CREATE SEQUENCE `s1` start with 1 minvalue 1 maxvalue 9223372036854775806 increment by 1 cache 1000 nocycle ENGINE=InnoDB SHOW CREATE SEQUENCE s2; Table Create Table s2 CREATE SEQUENCE `s2` start with 1 minvalue 1 maxvalue 9223372036854775806 increment by 1 cache 1000 nocycle ENGINE=InnoDB DROP SEQUENCE s2; RENAME TABLE s1 TO s2; DROP SEQUENCE s2;