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Why does Postgresql not use Index Only Scan on my composite index in this case?

score 423 · Answer 1 · 2015-06-18 15:14:03

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423

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Why does Postgresql not use Index Only Scan on my composite index in this case?

423 views Asked by Tomas Kulich At 18 June 2015 at 15:14

score 599 · Answer 2 · 2011-02-16 22:30:55

Do mysql composite indexes make some other indexes completely redundant?

599 views Asked by Brian Deacon At 16 February 2011 at 22:30

score 188 · Answer 3 · 2012-02-02 13:03:51

Is a composite index row created for an entity if one of the properties is missing?

188 views Asked by Mahron At 02 February 2012 at 13:03

score 305 · Answer 4 · 2011-10-08 10:38:44

What is a MYSQL composite index?

305 views Asked by Abhimanyu At 08 October 2011 at 10:38

score 84547 · Answer 5 · 2009-12-01 02:47:07

When should I use a composite index?

84.5k views Asked by Teddy At 01 December 2009 at 02:47

score 166 · Answer 6 · 2020-09-12 13:08:13

Does a MySQL database use a composite index when one of the fields in the WHERE clause is null?

166 views Asked by Maurice At 12 September 2020 at 13:08

score 122 · Answer 7 · 2021-05-21 05:16:15

Optimize my query (indexes, EXPLAIN) Mysql

122 views Asked by Peter At 21 May 2021 at 05:16

score 185 · Answer 8 · 2020-07-27 10:42:29

Define a composite index in EdgeDB

185 views Asked by CodesInChaos At 27 July 2020 at 10:42

score 526 · Answer 9 · 2021-01-21 16:08:40

What is the size of a composite index in MySQL/MariaDB

526 views Asked by lbj99 At 21 January 2021 at 16:08

score 1644 · Answer 10 · 2021-02-17 07:25:58

Composite index on three columns

1.6k views Asked by Venkataraman R At 17 February 2021 at 07:25

TechQA.

List Question

Why does Postgresql not use Index Only Scan on my composite index in this case?

Do mysql composite indexes make some other indexes completely redundant?

Is a composite index row created for an entity if one of the properties is missing?

What is a MYSQL composite index?

When should I use a composite index?

Does a MySQL database use a composite index when one of the fields in the WHERE clause is null?

Optimize my query (indexes, EXPLAIN) Mysql

Define a composite index in EdgeDB

What is the size of a composite index in MySQL/MariaDB

Composite index on three columns

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