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| author | Sergei Petrunia <psergey@askmonty.org> | 2019-11-09 21:03:23 +0300 |
|---|---|---|
| committer | Sergei Petrunia <psergey@askmonty.org> | 2019-11-12 14:40:00 +0300 |
| commit | 68ed3a81f2113ecdcd5fce0f0cab636d57ff77da (patch) | |
| tree | 6a1ec5f927a864018475f908c005b314b1feaacf /mysql-test/main/except.test | |
| parent | 0117d0e65ac8051bc9f6d14764a2ab05e69bd895 (diff) | |
| download | mariadb-git-68ed3a81f2113ecdcd5fce0f0cab636d57ff77da.tar.gz | |
MDEV-20854: ANALYZE for statements: not clear where the time is spent
Count the "gap" time between table accesses and display it as
r_other_time_ms in the "table" element.
* The advantage of this approach is that it doesn't add any new
my_timer_cycles() calls.
* The disadvantage is that the definition of what is done during
"other time" is not that clear: it includes checking the WHERE
(for this table), constructing index lookup tuple (for the next table)
writing to GROUP BY temporary table (as we dont account for that time
separately [yet], etc)
Diffstat (limited to 'mysql-test/main/except.test')
| -rw-r--r-- | mysql-test/main/except.test | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mysql-test/main/except.test b/mysql-test/main/except.test index 97e4ffcc3f2..090826ce94d 100644 --- a/mysql-test/main/except.test +++ b/mysql-test/main/except.test @@ -13,9 +13,9 @@ EXPLAIN extended (select a,b from t1) except (select c,d from t2); EXPLAIN extended select * from ((select a,b from t1) except (select c,d from t2)) a; EXPLAIN format=json (select a,b from t1) except (select c,d from t2); ---replace_regex /"r_total_time_ms": [0-9e\.\-+]*,/"r_total_time_ms": "REPLACED",/ +--source include/analyze-format.inc ANALYZE format=json (select a,b from t1) except (select c,d from t2); ---replace_regex /"r_total_time_ms": [0-9e\.\-+]*,/"r_total_time_ms": "REPLACED",/ +--source include/analyze-format.inc ANALYZE format=json select * from ((select a,b from t1) except (select c,d from t2)) a; select * from ((select a,b from t1) except (select c,d from t2)) a; @@ -45,9 +45,9 @@ EXPLAIN (select a,b,e,f from t1,t3) except (select c,d,g,h from t2,t4); EXPLAIN extended select * from ((select a,b,e,f from t1,t3) except (select c,d,g,h from t2,t4)) a; EXPLAIN format=json (select a,b,e,f from t1,t3) except (select c,d,g,h from t2,t4); ---replace_regex /"r_total_time_ms": [0-9e\.\-+]*,/"r_total_time_ms": "REPLACED",/ +--source include/analyze-format.inc ANALYZE format=json (select a,b,e,f from t1,t3) except (select c,d,g,h from t2,t4); ---replace_regex /"r_total_time_ms": [0-9e\.\-+]*,/"r_total_time_ms": "REPLACED",/ +--source include/analyze-format.inc ANALYZE format=json select * from ((select a,b,e,f from t1,t3) except (select c,d,g,h from t2,t4)) a; select * from ((select a,b,e,f from t1,t3) except (select c,d,g,h from t2,t4)) a; |