[multistage] disable calcite float to double cast #11518
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@@ Coverage Diff @@
## master #11518 +/- ##
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- Coverage 63.08% 63.07% -0.02%
Complexity 1108 1108
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Files 2320 2320
Lines 124597 124598 +1
Branches 19022 19022
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- Hits 78604 78586 -18
- Misses 40385 40411 +26
+ Partials 5608 5601 -7
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xiangfu0
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Sep 6, 2023
zhtaoxiang
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This was referenced Jul 16, 2024
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We are going to rollback this change in #13616 |
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Map float and double to the same RelDataType to disable calcite float to double cast so that queries like
select count(*) from table where aFloatColumn = 0.05works correctly in multi-stage query engine.Without this PR,
select count(*) from table where aFloatColumn = 0.05will be converted toselect count(*) from table where CAST(aFloatColumn as "DOUBLE") = 0.05. While casting from float to double does not always produce the same double value as the original float value, this leads to wrong query result.With this PR, the behavior in multi-stage query engine will be the same as the query in v1 query engine.