vvysotskyi commented on a change in pull request #1453: DRILL-6710: Disallow
negative scale for decimal data type
URL: https://github.com/apache/drill/pull/1453#discussion_r214175568
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/expr/fn/output/DecimalReturnTypeInference.java
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@@ -277,7 +277,7 @@
return TypeProtos.MajorType.newBuilder()
.setMinorType(attributes.getReturnValue().getType().getMinorType())
- .setScale(scale)
+ .setScale(Math.max(scale, 0))
Review comment:
Checks for type inference rules in this class were added only for the cases
when resulting scale/precision depends on the input scale/precision and may
become incorrect for correct values of the scale/precision.
But for the cases when resulting scale/precision is the same as the input
scale/precision, there is no need to add checks since it should be validated at
the stage when such scale/precision is set to the major type.
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