Github user wuchong commented on a diff in the pull request:
https://github.com/apache/flink/pull/3338#discussion_r101750708
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/ExpressionReducer.scala
---
@@ -106,8 +106,16 @@ class ExpressionReducer(config: TableConfig)
case SqlTypeName.ANY | SqlTypeName.ROW | SqlTypeName.ARRAY =>
reducedValues.add(unreduced)
case _ =>
+ val reducedValue = reduced.getField(reducedIdx)
+ // RexBuilder handle boolean literal incorrectly, convert it
into BigDecimal manually
--- End diff --
Yes, it should be `double`
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