statistics, planner: use the correct IndexInfo in GenerateHistCollFromColumnInfo() | tidb-test=pr/2219 (#44441)
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Signed-off-by: Yang Keao <yangkeao@chunibyo.icu>
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IndexInfo in GenerateHistCollFromColumnInfo() | tidb-test=pr/2149 (#44441)IndexInfo in GenerateHistCollFromColumnInfo() | tidb-test=pr/2219 (#44441)
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This is an automated cherry-pick of #44441
What problem does this PR solve?
Issue Number: close #44369
Problem Summary:
We saved the
IndexInfoin the stats cache, and use it in the query.But it may be outdated after DDL, which will cause some strange and unexpected result.
In this bug, we generated an incomplete
HistColl.Idx2ColumnIDs.The following estimation logic panicked when trying to get the needed column that was missing in it.
What is changed and how it works?
Use the
IndexInfofrom theDataSource.tableInfo.IndicesinGenerateHistCollFromColumnInfo.Check List
Tests
Side effects
Documentation
Release note
Please refer to Release Notes Language Style Guide to write a quality release note.