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drop table if exists t1,t2;
create table t1(n int);
insert into t1 values (1);
lock tables t1 write;
update low_priority t1 set n = 4;
select n from t1;
unlock tables;
n
4
drop table t1;
create table t1(n int);
insert into t1 values (1);
lock tables t1 read;
update low_priority t1 set n = 4;
select n from t1;
unlock tables;
n
1
drop table t1;
create table t1 (a int);
create table t2 (a int);
lock table t1 write, t2 write;
insert t1 select * from t2;
drop table t2;
ERROR 42S02: Table 'test.t2' doesn't exist
drop table t1;
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