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#74046 · alexey-milovidov opened on Dec 31, 2024
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#38986 · alexey-milovidov opened on Jul 7, 2022
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#87836 · alexey-milovidov opened on Sep 29, 2025
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Labels Milestones New issue

Some SSB queries are hang on 99% of execution

comp-optimizers

unexpected behaviour

#69196

· rudolfninja opened

on Sep 3, 2024

23.1+ join disables PREWHERE optimization

comp-optimizers

#55265

· SaltTan opened

on Oct 5, 2023

The Primary Key Index is not used for IN () operator (WHERE clause) and table created with ORDER BY ( toStartOfInterval (timestamp, ..) )

comp-optimizers

#49928

· wkarut opened

on May 16, 2023

simple count queries are slow after lightweight deletes

comp-optimizers

comp-projections

#47930

· filimonov opened

on Mar 23, 2023

Less reads for read-in-order optimization.

comp-optimizers

#42662

· KochetovNicolai opened

on Oct 25, 2022

A simple query works much faster than a query in a view.

comp-optimizers

#41961

· hardstep33 opened

on Sep 30, 2022

limit 0 performance issue .

comp-optimizers

#39373

· mbtolou opened

on Jul 19, 2022

Select count cost much more time because subquery

comp-optimizers

#38805

· railwayc opened

on Jul 4, 2022

Specifying that a window function should only be computed for certain rows

comp-optimizers

comp-window-functions

#35056

· andrea-s opened

on Mar 4, 2022

Predicate pushdown (Partition pruning) does not work against VIEW with ARRAY JOIN

comp-optimizers

unexpected behaviour

#34271

· den-crane opened

on Feb 2, 2022

Better EXPLAIN ESTIMATE

comp-optimizers

#33670

· den-crane opened

on Jan 15, 2022

Auto optimization the order of joining between tables

comp-optimizers

#33427

· oceanliuyang8 opened

on Jan 6, 2022