Aaaaaaron commented on a change in pull request #2225:
URL: https://github.com/apache/calcite/pull/2225#discussion_r511537448
##########
File path:
core/src/main/java/org/apache/calcite/rel/rules/AggregateCaseToFilterRule.java
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@@ -227,8 +227,11 @@ protected AggregateCaseToFilterRule(RelBuilderFactory
relBuilderFactory,
RelCollations.EMPTY, aggregateCall.getType(),
aggregateCall.getName());
} else if (kind == SqlKind.SUM // Case B
- && isIntLiteral(arg1) && RexLiteral.intValue(arg1) == 1
- && isIntLiteral(arg2) && RexLiteral.intValue(arg2) == 0) {
+ && isIntLiteral(arg1)
+ && RexLiteral.intValue(arg1) == 1
+ && isIntLiteral(arg2)
+ && !RexLiteral.isNullLiteral(arg2)
Review comment:
@julianhyde If we think null is not a reasonable int literal, I can add
this cond to "isIntLiteral", but the decimal case is not the same, if
isIntLiteral(decimal) returns false, we already know it is not an int, why do
we still use intValue(decimal)?
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