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
##########
@@ -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 I've updated my PR, please take a look, just add null cond
to "isIntLiteral".
@vlsi 's case(overflow) is not the same, "isIntLiteral(decimal)" just
returns false, we already know it is not an int, you never want its int value.
##########
File path:
core/src/main/java/org/apache/calcite/rel/rules/AggregateCaseToFilterRule.java
##########
@@ -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 condition to "isIntLiteral"
The @vlsi mentioned (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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