mariadb/mysql-test/t/show_explain_ps.test

#
# Test how SHOW EXPLAIN is represented in performance schema
#
--source include/have_perfschema.inc

--disable_warnings
drop table if exists t0, t1;
--enable_warnings

select * from performance_schema.setup_instruments where name like '%show_explain%';

--echo # We've got no instances
select * from performance_schema.cond_instances where name like '%show_explain%';

--echo # Check out if our cond is hit.

create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);

let $thr1=`select connection_id()`;
connect (con1, localhost, root,,);
connection con1;
let $thr2=`select connection_id()`;
connection default;

let $wait_condition= select State='show_explain_trap' from information_schema.processlist where id=$thr2;

#
# Test SHOW EXPLAIN for simple queries
#
connection con1;
set @show_explain_probe_select_id=1;
set debug_dbug='d,show_explain_probe_join_exec_start';
send select count(*) from t0 where a < 100000;

connection default;
--source include/wait_condition.inc
evalp show explain for $thr2;
connection con1;
reap;

set debug_dbug='';

select event_name
from performance_schema.events_waits_history_long 
where event_name='wait/synch/cond/sql/show_explain';

drop table t0;