Commit graph

4 commits

Author SHA1 Message Date
Sergei Krivonos
73df7a3009 MDEV-27036: resolve duplicated key issues of JSON tracing outputs:
MDEV-27036: repeated "table" key resolve for print_explain_json

MDEV-27036: duplicated keys in best_access_path

MDEV-27036: Explain_aggr_filesort::print_json_members: resolve duplicated "filesort" member in Json object

MDEV-27036: Explain_basic_join::
            print_explain_json_interns fixed start_dups_weedout case for main.explain_json test
2021-11-26 15:11:06 +02:00
Sergei Petrunia
68ed3a81f2 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)
2019-11-12 14:40:00 +03:00
Alexander Barkov
edef6a0074 Merge remote-tracking branch 'origin/10.4' into 10.5 2019-09-24 12:53:11 +04:00
WayneXia
a896bebfa6 MDEV-18844 Implement EXCEPT ALL and INTERSECT ALL operations 2019-08-24 21:44:41 +08:00