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--source include/not_embedded.inc
--source include/have_innodb.inc
#--source include/have_metadata_lock_info.inc
#
# Testing of problems with ALTER TABLE and events on the same table(s)
#
#
# MDEV-24452 ALTER TABLE event take infinite time which for example breaks
# mysql_upgrade
#
SET GLOBAL event_scheduler=1;
CREATE TABLE t1 (a int primary key, b int) engine=innodb;
insert into t1 values (1,1),(2,2),(3,3);
CREATE TABLE t2 (a int primary key) engine=innodb;
CREATE EVENT e_t1 ON SCHEDULE EVERY 1 SECOND DO insert ignore into test.t2 select a from test.t1;
let $wait_condition=SELECT count(*) > 0 from t2;
--source include/wait_condition.inc
select * from t2;
drop event e_t1;
# select * from information_schema.metadata_lock_info;
ALTER TABLE mysql.event DROP PRIMARY KEY, ADD PRIMARY KEY(db,name);
drop table t1,t2;
SET GLOBAL event_scheduler=default;
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