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58532f36d0
Instead of restart_mysqld.inc, truncate the P_S tables that are used by the test. We don't want to query some irrelevant data.
60 lines
1.7 KiB
Text
60 lines
1.7 KiB
Text
#
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# Test how SHOW EXPLAIN is represented in performance schema
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#
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--source include/have_debug.inc
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--source include/have_perfschema.inc
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# Like all other perfschema tests, we don't work on embedded server:
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--source include/not_embedded.inc
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# There is a query below that selects from P_S tables.
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# Remove possible history that could confuse it
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truncate table performance_schema.events_statements_history_long;
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truncate table performance_schema.events_stages_history_long;
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--disable_warnings
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drop table if exists t0, t1;
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--enable_warnings
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select * from performance_schema.setup_instruments where name like '%show_explain%';
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--echo # We've got no instances
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select * from performance_schema.cond_instances where name like '%show_explain%';
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--echo # Check out if our cond is hit.
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create table t0 (a int);
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insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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let $thr1=`select connection_id()`;
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connect (con1, localhost, root,,);
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connection con1;
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let $thr2=`select connection_id()`;
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connection default;
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let $wait_condition= select State='show_explain_trap' from information_schema.processlist where id=$thr2;
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#
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# Test SHOW EXPLAIN for simple queries
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#
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connection con1;
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set @show_explain_probe_select_id=1;
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set debug_dbug='d,show_explain_probe_join_exec_start';
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send select count(*) from t0 where a < 100000;
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connection default;
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--source include/wait_condition.inc
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evalp show explain for $thr2;
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connection con1;
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reap;
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set debug_dbug='';
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select event_name
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from
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performance_schema.events_stages_history_long
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where
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event_name like '%show explain' and
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thread_id in(select thread_id
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from performance_schema.events_statements_history_long
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where EVENT_NAME='statement/sql/show_explain');
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drop table t0;
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