drop table if exists t1;
create temporary table t1(n int not null primary key);
drop table if exists t2;
create table t2(n int);
insert into t2 values(3);
select * from t1;
n
3
flush tables with read lock;
drop table t2;
Table 't2' was locked with a READ lock and can't be updated
 drop table t2;
unlock tables;
drop database if exists mysqltest;
create database mysqltest;
create table mysqltest.t1(n int);
insert into mysqltest.t1 values (23);
flush tables with read lock;
 drop database mysqltest;
select * from mysqltest.t1;
n
23
unlock tables;
create table t1 (n int);
flush tables with read lock;
insert into t1 values (345);
select * from t1;
n
345
drop table t1;