xiedeyantu commented on code in PR #4671:
URL: https://github.com/apache/calcite/pull/4671#discussion_r2612312065
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core/src/main/java/org/apache/calcite/sql/validate/SqlValidatorImpl.java:
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@@ -489,9 +489,10 @@ private boolean expandSelectItem(final SqlNode selectItem,
SqlSelect select,
selectScope = getSelectScope(select);
expanded = expandSelectExpr(selectItem, scope, select, expansions);
- // Non-strict GROUP BY: wrap non-aggregated, non-grouped columns in
ANY_VALUE()
+ // Non-strict GROUP BY or BY clause: wrap non-aggregated, non-grouped
columns in ANY_VALUE()
if (isAggregate(select)
- && config.conformance().isNonStrictGroupBy()
+ && (config.conformance().isNonStrictGroupBy()
+ || select.hasByClause())
Review Comment:
It is still necessary. It seems that in most scenarios, SELECT BY requires
non-standard GROUP BY, so it needs to be enabled.
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