xiedeyantu commented on code in PR #4730:
URL: https://github.com/apache/calcite/pull/4730#discussion_r2672896679
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core/src/main/java/org/apache/calcite/adapter/enumerable/EnumerableCollect.java:
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@@ -109,15 +109,21 @@ public static Collect create(RelNode input, RelDataType
rowType) {
RelDataType childRecordType =
result.physType.getRowType().getFieldList().get(0).getType();
if (!SqlTypeUtil.sameNamedType(collectionComponentType,
childRecordType)) {
- // In the internal representation of multisets , every element must be
a record. In case the
- // result above is a scalar type we have to wrap it around a physical
type capable of
- // representing records. For this reason the following conversion is
necessary.
+ // In the internal representation of multisets, every element must be
a record.
+ // In case the result above is a scalar type we have to wrap it around
a
+ // physical type capable of representing records.
+ // For ARRAY type with a single field, we use SCALAR format to avoid
Review Comment:
I've added test cases to implement comparisons of complex nested types
within `any`. However, I'm unsure if the current implementation is a good
approach.
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