englefly commented on code in PR #64849:
URL: https://github.com/apache/doris/pull/64849#discussion_r3533344874
##########
fe/fe-core/src/test/java/org/apache/doris/nereids/rules/rewrite/EliminateGroupByKeyTest.java:
##########
@@ -181,6 +183,25 @@ void testEliminateByEqual() {
&&
agg.getGroupByExpressions().get(0).toSql().equals("name")));
}
+ @Test
+ void testEliminateByPkWithOutputNeeded() throws Exception {
+ // Regression: when a group-by key (name) is FD-redundant (id -> name)
+ // but still appears in SELECT, it should be removed from group-by
+ // and wrapped with ANY_VALUE in the output.
+ addConstraint("alter table t1 add constraint pk2 primary key (id)");
+ PlanChecker.from(connectContext)
+ .analyze("select id, name, count(*) from t1 group by id, name")
+ .customRewrite(new EliminateGroupByKey())
Review Comment:
review2
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