twalthr commented on a change in pull request #7079: [FLINK-10845][table]
Support multiple different DISTINCT aggregates for batch
URL: https://github.com/apache/flink/pull/7079#discussion_r235670192
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File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/calls/ScalarOperators.scala
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@@ -1288,7 +1295,8 @@ object ScalarOperators {
nullCheck: Boolean,
resultType: TypeInformation[_],
left: GeneratedExpression,
- right: GeneratedExpression)
+ right: GeneratedExpression,
+ compareNull: Boolean)
Review comment:
@xueyumusic After looking at the amount of changes, I would suggest to leave
`generateOperatorIfNotNull` untouched. This method is correct as it is. If you
need some special null comparing logic. We can create a specialized method only
for `equals`. We could create a method `generateDistinctFrom` that wraps
`generateEquals`. What do you think?
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