Aaaaaaron commented on a change in pull request #2225:
URL: https://github.com/apache/calcite/pull/2225#discussion_r511537147
##########
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:
But is "null" a reasonable int literal? @vlsi 's case,
"isIntLiteral(decimal)" just returns false. My case is "null" is an int literal
but you when you get its value, it is null.
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