liuyongvs commented on code in PR #3212:
URL: https://github.com/apache/calcite/pull/3212#discussion_r1214409643
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core/src/main/java/org/apache/calcite/sql/type/ReturnTypes.java:
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@@ -500,7 +515,7 @@ public static SqlCall stripSeparator(SqlCall call) {
* Returns the element type of a MULTISET.
*/
public static final SqlReturnTypeInference MULTISET_ELEMENT_NULLABLE =
- MULTISET.andThen(SqlTypeTransforms.TO_MULTISET_ELEMENT_TYPE);
+ MULTISET.andThen(SqlTypeTransforms.TO_COLLECTION_ELEMENT_TYPE);
Review Comment:
@JiajunBernoulli COLLECTION includes array and multiset, both have
getComponentType, but doesn't include map type. map type has getKeyType and
getValueType
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