sbroeder commented on code in PR #5271:
URL: https://github.com/apache/calcite/pull/5271#discussion_r4135751696
##########
core/src/main/java/org/apache/calcite/sql/validate/AliasNamespace.java:
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@@ -111,6 +111,7 @@ protected AliasNamespace(
rowType.getFieldList().get(0).getType())
.build();
aliasedType = node.getKind() == SqlKind.COLLECTION_TABLE
+ || (node.getKind() == SqlKind.UNNEST &&
isUnnestOfStructArray((SqlCall) node))
? new SingleColumnAliasRelDataType(rowType, singleColumnAlias) :
singleColumnAlias;
// If the sub-query is UNNEST with ordinality
Review Comment:
For a struct-array UNNEST WITH ORDINALITY, the data column no longer gets
renamed to the alias. Also added a test
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