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#
# Create and check
#
create sequence s1 engine=innodb;
check table s1;
Table Op Msg_type Msg_text
test.s1 check note The storage engine for the table doesn't support check
select next value for s1;
next value for s1
1
flush tables;
check table s1;
Table Op Msg_type Msg_text
test.s1 check note The storage engine for the table doesn't support check
select next value for s1;
next value for s1
1001
flush tables;
repair table s1;
Table Op Msg_type Msg_text
test.s1 repair note The storage engine for the table doesn't support repair
select next value for s1;
next value for s1
2001
drop sequence s1;
create or replace sequence s1 engine=innodb;
select next value for s1;
next value for s1
1
repair table s1;
Table Op Msg_type Msg_text
test.s1 repair note The storage engine for the table doesn't support repair
check table s1;
Table Op Msg_type Msg_text
test.s1 check note The storage engine for the table doesn't support check
select next value for s1;
next value for s1
1001
select * from s1;
next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
2001 1 9223372036854775806 1 1 1000 0 0
drop sequence s1;
#
# INSERT
#
create sequence s1;
create sequence s2;
insert into s1 (next_not_cached_value, minimum_value) values (100,1000);
ERROR HY000: Field 'maximum_value' doesn't have a default value
insert into s1 values (next value for s1, 1,9223372036854775806,1,1,1000,0,0);
ERROR HY000: Table 's1' is specified twice, both as a target for 'INSERT' and as a separate source for data
insert into s1 values (next value for s2, 1,9223372036854775806,1,1,1000,0,0);
ERROR HY000: Wrong INSERT into a SEQUENCE. One can only do single table INSERT into a sequence object (like with mysqldump). If you want to change the SEQUENCE, use ALTER SEQUENCE instead.
insert into s1 select * from s2;
ERROR HY000: Wrong INSERT into a SEQUENCE. One can only do single table INSERT into a sequence object (like with mysqldump). If you want to change the SEQUENCE, use ALTER SEQUENCE instead.
insert into s1 values(1000,9223372036854775806,1,1,1,1000,0,0);
ERROR HY000: Sequence 'test.s1' values are conflicting
insert into s1 values(0,9223372036854775806,1,1,1,1000,0,0);
ERROR HY000: Sequence 'test.s1' values are conflicting
select * from s1;
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
insert into s1 values(1000,1,9223372036854775806,1,1,1000,0,0);
select * from s1;
next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
1000 1 9223372036854775806 1 1 1000 0 0
select next value for s1;
next value for s1
1000
select * from s1;
next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
2000 1 9223372036854775806 1 1 1000 0 0
insert into s2 values(0, 1, 10, 1, 2, 1, 1, 0);
ERROR HY000: Sequence 'test.s2' values are conflicting
drop sequence s1,s2;
#
# UPDATE and DELETE
#
create sequence s1;
update s1 set next_not_cached_value=100;
ERROR HY000: Storage engine SEQUENCE of the table `test`.`s1` doesn't have this option
delete from s1 where next_not_cached_value > 0;
ERROR HY000: Storage engine SEQUENCE of the table `test`.`s1` doesn't have this option
drop sequence s1;
#
# SHOW TABLES
#
create sequence s1;
create table t1 (a int);
create view v1 as select * from s1;
show full tables;
Tables_in_test Table_type
s1 SEQUENCE
t1 BASE TABLE
v1 VIEW
SELECT TABLE_TYPE,ENGINE FROM INFORMATION_SCHEMA.TABLES where table_schema="test" ORDER BY TABLE_NAME;
TABLE_TYPE ENGINE
SEQUENCE MyISAM
BASE TABLE MyISAM
VIEW NULL
drop table t1,s1;
drop view v1;
#
# LOCK TABLES (as in mysqldump)
#
create sequence s1 engine=innodb;
LOCK TABLES s1 READ;
SELECT * from s1;
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
UNLOCK TABLES;
LOCK TABLES s1 WRITE;
insert into s1 values (1,1,9223372036854775806, 1, 1, 1000, 0, 0);
UNLOCK TABLES;
drop table s1;
#
# Many sequence calls with innodb
#
create sequence s1 cache=1000 engine=innodb;
start transaction;
select count(nextval(s1)) from seq_1_to_2000;
count(nextval(s1))
2000
commit;
select * from s1;
next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
2001 1 9223372036854775806 1 1 1000 0 0
drop sequence s1;
create sequence s1 cache=1000 engine=innodb;
start transaction;
select count(nextval(s1)) from seq_1_to_2000;
count(nextval(s1))
2000
connect addconroot, localhost, root,,;
connection addconroot;
start transaction;
select count(nextval(s1)) from seq_1_to_2000;
count(nextval(s1))
2000
select * from s1;
next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
4001 1 9223372036854775806 1 1 1000 0 0
commit;
disconnect addconroot;
connection default;
select * from s1;
next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
4001 1 9223372036854775806 1 1 1000 0 0
commit;
drop sequence s1;
#
# Flush tables with read lock
#
create sequence s1;
select next value for s1;
next value for s1
1
flush tables with read lock;
create sequence s2;
ERROR HY000: Can't execute the query because you have a conflicting read lock
select next value for s1;
ERROR HY000: Can't execute the query because you have a conflicting read lock
unlock tables;
drop sequence s1;
#
# Don't allow SQUENCE to be used with CHECK or virtual fields
#
CREATE SEQUENCE s1 nocache engine=myisam;
CREATE table t1 (a int check (next value for s1 > 0));
ERROR HY000: Function or expression 'nextval()' cannot be used in the CHECK clause of `a`
CREATE table t1 (a int check (previous value for s1 > 0));
ERROR HY000: Function or expression 'lastval()' cannot be used in the CHECK clause of `a`
CREATE table t1 (a int check (setval(s1,10)));
ERROR HY000: Function or expression 'setval()' cannot be used in the CHECK clause of `a`
CREATE TABLE t1 (a int, b int as (next value for s1 > 0));
ERROR HY000: Function or expression 'nextval()' cannot be used in the GENERATED ALWAYS AS clause of `b`
drop sequence s1;
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