GROUP BY cardinality estimation improvement

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Title GROUP BY cardinality estimation improvement
Topic Performance
Created 2016-02-24 18:04:30
Last modified 2016-04-04 11:56:03 (2 years, 8 months ago)
Latest email 2016-04-02 14:59:16 (2 years, 8 months ago)
Status
2016-03: Committed
Authors Tomas Vondra (fuzzycz)
Reviewers Alexander Korotkov (smagen), Dean Rasheed (deanr)Become reviewer
Committer Dean Rasheed (deanr)
Links
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
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