TechQA.

Question

Why does adding a JOIN completely modify the query planner behaviour?

score 56 · Answer 1 · 2015-06-08 14:27:03

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Why does adding a JOIN completely modify the query planner behaviour?

56 views Asked by Gagaro At 08 June 2015 at 14:27

score 349 · Answer 2 · 2015-06-18 15:14:03

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

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

score 4686 · Answer 3 · 2017-09-06 12:00:12

Mysql index hints in Hibernate query

4.6k views Asked by Vijay Kansal At 06 September 2017 at 12:00

score 328 · Answer 4 · 2017-09-05 08:46:52

Create MySQL Workbench query plan image from command line / terminal

328 views Asked by Stranger At 05 September 2017 at 08:46

score 47 · Answer 5 · 2020-09-29 21:06:35

Query planner differences in similar queries

47 views Asked by moray95 At 29 September 2020 at 21:06

score 237 · Answer 6 · 2020-09-30 20:50:45

PostgreSQL 12.4 query planner ignores sub-partition constraint, resulting in table scan

237 views Asked by Niels Voorhoeve At 30 September 2020 at 20:50

score 704 · Answer 7 · 2020-10-12 10:55:44

Postgresql, manually use analyze $table_name after each update both on indexes or on structure to update query planner? Really?

704 views Asked by Fred Hors At 12 October 2020 at 10:55

score 39 · Answer 8 · 2023-12-16 00:02:16

Postgres order of execution in query that computes a function and locks rows

39 views Asked by Andrew At 16 December 2023 at 00:02

score 1258 · Answer 9 · 2020-12-13 13:06:56

How many disk pages are read by a query in Postgres?

1.2k views Asked by Settembre Nero At 13 December 2020 at 13:06

score 720 · Answer 10 · 2022-04-13 13:40:23

Is there a shared query plan cache for Postgres?

720 views Asked by Rol At 13 April 2022 at 13:40

TechQA.

List Question

Why does adding a JOIN completely modify the query planner behaviour?

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

Mysql index hints in Hibernate query

Create MySQL Workbench query plan image from command line / terminal

Query planner differences in similar queries

PostgreSQL 12.4 query planner ignores sub-partition constraint, resulting in table scan

Postgresql, manually use analyze $table_name after each update both on indexes or on structure to update query planner? Really?

Postgres order of execution in query that computes a function and locks rows

How many disk pages are read by a query in Postgres?

Is there a shared query plan cache for Postgres?

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