DonnyZone commented on a change in pull request #1556: [CALCITE-3438] Validator
should disallow use of the GROUPING function inside a FILTER clause
URL: https://github.com/apache/calcite/pull/1556#discussion_r347199979
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File path: core/src/main/java/org/apache/calcite/sql/validate/AggVisitor.java
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@@ -44,6 +44,9 @@
* or group auxiliary functions (e.g. {@code TUMBLE_START}). */
protected final boolean group;
protected final SqlNameMatcher nameMatcher;
+ /** Whether to find grouping functions (i.e., {@code GROUP_ID},
+ * {@code GROUPING_ID}, {@code GROUPING}).*/
+ private boolean grouping = false;
Review comment:
@hsyuan It is not the same purpose. The `group` variable is used for group
functions like `TUMBLE_START`.
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