bkietz commented on a change in pull request #8311:
URL: https://github.com/apache/arrow/pull/8311#discussion_r497752291
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File path: cpp/src/arrow/dataset/filter.cc
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@@ -1255,14 +1255,42 @@ struct TreeEvaluator::Impl {
}
Result<Datum> operator()(const ComparisonExpression& expr) const {
- ARROW_ASSIGN_OR_RAISE(auto lhs, Evaluate(*expr.left_operand()));
- ARROW_ASSIGN_OR_RAISE(auto rhs, Evaluate(*expr.right_operand()));
+ ARROW_ASSIGN_OR_RAISE(Datum lhs, Evaluate(*expr.left_operand()));
+ ARROW_ASSIGN_OR_RAISE(Datum rhs, Evaluate(*expr.right_operand()));
if (IsNullDatum(lhs) || IsNullDatum(rhs)) {
return Datum(std::make_shared<BooleanScalar>());
}
- DCHECK(lhs.is_array());
+ if (lhs.type()->id() == Type::DICTIONARY && rhs.type()->id() ==
Type::DICTIONARY) {
Review comment:
@wesm What do you think about adding kernels to scalar_compare.cc which
do this inside compute:: ?
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