-- source include/not_embedded.inc -- source include/have_innodb.inc --disable_warnings drop table if exists t1; --enable_warnings # basic tests of semi-consistent reads connect (a,localhost,root,,); connect (b,localhost,root,,); connection a; set session transaction isolation level read committed; create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; insert into t1 values (1),(2),(3),(4),(5),(6),(7); set autocommit=0; # this should lock the entire table select * from t1 where a=3 lock in share mode; connection b; set session transaction isolation level read committed; set autocommit=0; -- error ER_LOCK_WAIT_TIMEOUT update t1 set a=10 where a=5; connection a; commit; connection b; update t1 set a=10 where a=5; connection a; -- error ER_LOCK_WAIT_TIMEOUT select * from t1 where a=2 for update; # this should lock the records (1),(2) select * from t1 where a=2 limit 1 for update; connection b; update t1 set a=11 where a=6; -- error ER_LOCK_WAIT_TIMEOUT update t1 set a=12 where a=2; -- error ER_LOCK_WAIT_TIMEOUT update t1 set a=13 where a=1; connection a; commit; connection b; update t1 set a=14 where a=1; commit; connection a; select * from t1; drop table t1; connection default; disconnect a; disconnect b;