drop table if exists s1, t1, t2;
CREATE SEQUENCE s1;
create table t1 (a int);
create table t2 (a int);
LOCK TABLE s1 WRITE, t1 write;
create or replace sequence s1;
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
select * from t1;
a
select * from t2;
ERROR HY000: Table 't2' was not locked with LOCK TABLES
unlock tables;
select * from t1;
a
select * from t2;
a
drop tables s1, t1, t2;
CREATE SEQUENCE s1;
LOCK TABLE s1 READ;
SELECT NEXTVAL(s1);
ERROR HY000: Table 's1' was locked with a READ lock and can't be updated
SELECT NEXTVAL(s);
ERROR HY000: Table 's' was not locked with LOCK TABLES
DROP SEQUENCE s1;
ERROR HY000: Table 's1' was locked with a READ lock and can't be updated
unlock tables;
DROP SEQUENCE s1;