GROUP BY cardinality estimation improvement

Title

Topic

Performance

Created

2016-02-24 18:04:30

Last modified

2016-04-04 11:56:03 (8 years, 7 months ago)

Latest email

2016-04-02 14:59:16 (8 years, 7 months ago)

Status

2016-03: Committed

Target version

Authors

Tomas Vondra (fuzzycz)

Reviewers

Alexander Korotkov (smagen), Dean Rasheed (deanr)Become reviewer

Committer

Dean Rasheed (deanr)

Links

Checkout latest CFbot patchset

Go to your local checkout of the PostgreSQL repository and run:

git remote add commitfest https://github.com/postgresql-cfbot/postgresql.git
git fetch commitfest cf/538
git checkout commitfest/cf/538

Emails

improving GROUP BY estimation: First at 2016-02-24 01:12:33 by Tomas Vondra <tomas.vondra at 2ndquadrant.com>
Latest at 2016-04-02 14:59:16 by Tom Lane <tgl at sss.pgh.pa.us>
Latest attachment (estimate-num-groups-v5.patch) at 2016-04-02 12:20:13 from Dean Rasheed <dean.a.rasheed at gmail.com>
    Attachment (estimate-num-groups-v5.patch) at 2016-04-02 12:20:13 from Dean Rasheed <dean.a.rasheed at gmail.com> (Patch: Yes)
    Attachment (estimate-num-groups-v4.patch) at 2016-03-30 13:03:41 from Tomas Vondra <tomas.vondra at 2ndquadrant.com> (Patch: Yes)
    Attachment (estimate-num-groups-v3.patch) at 2016-03-18 00:37:56 from Tomas Vondra <tomas.vondra at 2ndquadrant.com> (Patch: Yes)
    Attachment (estimate-num-groups-v2.txt) at 2016-02-25 23:16:05 from Mark Dilger <hornschnorter at gmail.com> (Patch: Yes)
    Attachment (estimate-num-groups-v1.patch) at 2016-02-24 01:12:33 from Tomas Vondra <tomas.vondra at 2ndquadrant.com> (Patch: Yes)

History

When	Who	What
2016-04-04 11:56:03	Dean Rasheed (deanr)	Closed in commitfest 2016-03 with status: Committed
2016-03-31 18:43:36	Dean Rasheed (deanr)	Added deanr as committer
2016-03-31 18:43:32	Dean Rasheed (deanr)	New status: Ready for Committer
2016-03-30 13:06:08	Tomas Vondra (fuzzycz)	New status: Needs review
2016-03-22 14:37:40	Alexander Korotkov (smagen)	New status: Waiting on Author
2016-03-18 00:40:00	Tomas Vondra (fuzzycz)	New status: Needs review
2016-03-13 15:25:14	Dean Rasheed (deanr)	Added deanr as reviewer
2016-03-03 11:53:46	Alexander Korotkov (smagen)	New status: Waiting on Author
2016-03-03 08:37:18	Alexander Korotkov (smagen)	Added smagen as reviewer
2016-02-24 18:04:41	Tomas Vondra (fuzzycz)	Changed authors to Tomas Vondra (fuzzycz)
2016-02-24 18:04:30	Tomas Vondra (fuzzycz)	Attached mail thread 56CD0381.5060502@2ndquadrant.com
2016-02-24 18:04:30	Tomas Vondra (fuzzycz)	Created patch record