util/ranger: change BuildRange to build column/index/table range #5509
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Any benchmark result? |
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LGTM |
zimulala
reviewed
Dec 27, 2017
plan/gen_physical_plans.go
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| if err != nil { | ||
| terror.Log(errors.Trace(err)) | ||
| return nil, nil, nil | ||
| } | ||
| indexRanges = ranger.Ranges2NewRanges(ranges) | ||
| indexRanges = ranges |
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Remove it, we can return ranges directly.
plan/physical_plan_builder.go
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| if err != nil { | ||
| return nil, errors.Trace(err) | ||
| } | ||
| is.Ranges = ranger.Ranges2NewRanges(ranges) | ||
| is.Ranges = ranges |
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Can we remove this line? And we can remove ranges.
plan/physical_plan_builder.go
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| if err != nil { | ||
| return nil, errors.Trace(err) | ||
| } | ||
| ts.Ranges = ranges |
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/run-all-tests |
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/run-sqllogic-test |
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Any benchmark result? |
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See this function, it's very inefficient, always make unnecessary conversion.
https://github.com/pingcap/tidb/compare/master...tiancaiamao:build-range?expand=1#diff-9980094f65cdcbb9cd1aaaf4d9d59e35L357
@winoros @hanfei1991