[MDEV-13933] Wrong results in COUNT() query with EXISTS and exists_to_in - Jira

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Type: Bug
Status: Closed (View Workflow)
Priority: Critical
Resolution: Fixed
Affects Version/s: 10.1.26, 5.5(EOL), 10.0(EOL), 10.1(EOL), 10.2(EOL)
Fix Version/s: 5.5.59, 10.0.34, 10.3.4, 10.1.31, 10.2.13
Component/s: Optimizer
Labels:
None
Environment:
Linux

Sprint:
10.2.10, 5.5.58, 10.1.29, 10.1.30, 10.2.12, 5.5.59

Description

A COUNT() query containing EXISTS and subqueries returns wrong results.
Sometimes disabling the optimizer switch exists_to_in works as expected, I can't always reproduce this behaviour thou.
Dropping an index (see sample.txt) also seems to fix, but there it's still 1 row off: 468 vs 469)

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test_case_scr.sql
2017-09-28 07:30
486 kB
Claudio Nanni
sample.txt
2017-09-28 07:30
5 kB
Claudio Nanni

Activity

People

Assignee:: Oleksandr Byelkin

Reporter:: Claudio Nanni

Votes:: 0 Vote for this issue

Watchers:: 6 Start watching this issue

Dates

Created:: 2017-09-28 07:35

Updated:: 2024-07-08 00:37

Resolved:: 2018-01-10 16:05

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