planner/core: support partition pruning for partition expression floor(unix_timestamp()) (#16402) #16523
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Signed-off-by: sre-bot <sre-bot@pingcap.com>
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@tiancaiamao please fix conflict |
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PTAL @jackysp |
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cherry-pick #16402 to release-4.0
What problem does this PR solve?
Issue Number: close #16354
Problem Summary:
Support partition pruning for
floor(unix_timestamp()What is changed and how it works?
What's Changed:
Take function
floor(unix_timestamp())as monotoneIncFuncs, special handle for this case.How it Works:
If the partition function is monotoneous, i.e.
That partition function can be used by the partition pruning algorithm.
If we view
floor(unix_timestamp())as a single function, it basicly conform to the definition.Related changes
pingcap/docs/pingcap/docs-cn:pingcap/tidb-ansible:Check List
Tests
Release note