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author | Sergey Petrunya <psergey@askmonty.org> | 2012-07-07 08:47:41 +0400 |
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committer | Sergey Petrunya <psergey@askmonty.org> | 2012-07-07 08:47:41 +0400 |
commit | a931467e17c4826ce4fa473de0479953d9bbcc59 (patch) | |
tree | 6e017fc3f244fa2a9a3f940ded632de0b96822a0 /mysql-test/r/show_explain_ps.result | |
parent | ae3bc191613fdec05d4d84a74648d1e84edc8ce4 (diff) | |
download | mariadb-git-a931467e17c4826ce4fa473de0479953d9bbcc59.tar.gz |
Enable PERFORMANCE_SCHEMA tracking for SHOW EXPLAIN's conditions.
Diffstat (limited to 'mysql-test/r/show_explain_ps.result')
-rw-r--r-- | mysql-test/r/show_explain_ps.result | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/mysql-test/r/show_explain_ps.result b/mysql-test/r/show_explain_ps.result new file mode 100644 index 00000000000..625b9cfddae --- /dev/null +++ b/mysql-test/r/show_explain_ps.result @@ -0,0 +1,27 @@ +drop table if exists t0, t1; +select * from performance_schema.setup_instruments where name like '%show_explain%'; +NAME ENABLED TIMED +wait/synch/cond/sql/show_explain YES YES +# We've got no instances +select * from performance_schema.cond_instances where name like '%show_explain%'; +NAME OBJECT_INSTANCE_BEGIN +# 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); +set @show_explain_probe_select_id=1; +set debug_dbug='d,show_explain_probe_join_exec_start'; +select count(*) from t0 where a < 100000; +show explain for $thr2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t0 ALL NULL NULL NULL NULL 10 Using where +Warnings: +Note 1003 select count(*) from t0 where a < 100000 +count(*) +10 +set debug_dbug=''; +select event_name +from performance_schema.events_waits_history_long +where event_name='wait/synch/cond/sql/show_explain'; +event_name +wait/synch/cond/sql/show_explain +drop table t0; |