[fix](nereids) derive column stats for 'expr and A is not null' #37235
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Thank you for your contribution to Apache Doris. Since 2024-03-18, the Document has been moved to doris-website. |
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run buildall |
TPC-H: Total hot run time: 39904 ms |
TPC-DS: Total hot run time: 171351 ms |
ClickBench: Total hot run time: 31.46 s |
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run buildall |
TPC-H: Total hot run time: 39719 ms |
TPC-DS: Total hot run time: 173802 ms |
ClickBench: Total hot run time: 30.21 s |
morrySnow
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PR approved by at least one committer and no changes requested. |
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starocean999
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englefly
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…he#37235) the algorithm for computing stats for "expr1 and expr2" predicate is as following: 1. compute output stats of expr1 based on input stats. the result stats is denoted by leftStats 2. compute stats of expr2 based on leftStats after step1, leftStats should be normalized to avoid abnormal cases, such as ndv > rowCount or numNulls > rowCount Issue Number: close #xxx <!--Describe your changes.-->
englefly
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…) (#37498) pick from #37235 the algorithm for computing stats for "expr1 and expr2" predicate is as following: 1. compute output stats of expr1 based on input stats. the result stats is denoted by leftStats 2. compute stats of expr2 based on leftStats after step1, leftStats should be normalized to avoid abnormal cases, such as ndv > rowCount or numNulls > rowCount Issue Number: close #xxx <!--Describe your changes.--> ## Proposed changes Issue Number: close #xxx <!--Describe your changes.-->
dataroaring
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## Proposed changes the algorithm for computing stats for "expr1 and expr2" predicate is as following: 1. compute output stats of expr1 based on input stats. the result stats is denoted by leftStats 2. compute stats of expr2 based on leftStats after step1, leftStats should be normalized to avoid abnormal cases, such as ndv > rowCount or numNulls > rowCount Issue Number: close #xxx <!--Describe your changes.-->
mongo360
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Aug 16, 2024
…e#37235 (apache#37236) ## Proposed changes pick apache#37235 Issue Number: close #xxx <!--Describe your changes.-->
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Proposed changes
the algorithm for computing stats for "expr1 and expr2" predicate is as following:
after step1, leftStats should be normalized to avoid abnormal cases, such as ndv > rowCount or numNulls > rowCount
Issue Number: close #xxx