YiwenWu commented on code in PR #3650:
URL: https://github.com/apache/calcite/pull/3650#discussion_r1481239292
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core/src/main/java/org/apache/calcite/sql/type/ReturnTypes.java:
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@@ -620,6 +620,13 @@ public static SqlCall stripSeparator(SqlCall call) {
public static final SqlReturnTypeInference MULTISET_ELEMENT_NULLABLE =
Review Comment:
This is a minor suggestion that can be ignored.
I'm not sure about the removal policy either. Not deleting can avoid
version upgrade issues, but maintenance may be lengthy.
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