Jackie-Jiang commented on a change in pull request #7972:
URL: https://github.com/apache/pinot/pull/7972#discussion_r796095223
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File path:
pinot-common/src/main/java/org/apache/pinot/sql/parsers/CalciteSqlParser.java
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@@ -146,23 +146,30 @@ static void validate(PinotQuery pinotQuery)
private static void validateGroupByClause(PinotQuery pinotQuery)
throws SqlCompilationException {
- if (pinotQuery.getGroupByList() == null) {
- return;
- }
- // Sanity check group by query: All non-aggregate expression in selection
list should be also included in group
- // by list.
- Set<Expression> groupByExprs = new HashSet<>(pinotQuery.getGroupByList());
+ boolean hasGroupByClause = pinotQuery.getGroupByList() != null;
+ Set<Expression> groupByExprs = hasGroupByClause ? new
HashSet<>(pinotQuery.getGroupByList()) : null;
Review comment:
I prefer separating the logic for readability, but it is optional. If
you prefer the current way, I can also merge as is. Just let me know
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