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executor: add CTEProducer that shared by all CTEExec (#44643) #44778
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executor: add CTEProducer that shared by all CTEExec (#44643) #44778
ti-chi-bot
merged 4 commits into
pingcap:release-6.1
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ti-chi-bot:cherry-pick-44643-to-release-6.1
Jul 2, 2023
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Signed-off-by: ti-chi-bot <ti-community-prow-bot@tidb.io>
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Signed-off-by: guo-shaoge <shaoge1994@163.com>
rely on this: #44946 |
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This is an automated cherry-pick of #44643
What problem does this PR solve?
Issue Number: close #44649
Problem Summary: As issue comment said: #44649 (comment)
What is changed and how it works?
Before: For different CTE references(a.k.a.
CTEExec
) that use one CTE definition. They will only have one PhysicalPlan of the CTE defition. But we will build CTE definition multiple time for each CTE references.After: Add
CTEProducer
struct, it corresponsds to CTE defition and will only build once. These differentCTEExec
will read from the sameCTEProducer
.Check List
Tests
Side effects
Documentation
Release note
Please refer to Release Notes Language Style Guide to write a quality release note.