xiedeyantu commented on code in PR #4361:
URL: https://github.com/apache/calcite/pull/4361#discussion_r2076468408
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core/src/test/resources/sql/planner.iq:
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@@ -132,12 +132,13 @@ EnumerableCalc(expr#0..2=[{inputs}], $f0=[$t1], $f1=[$t2])
# [CALCITE-7000] Extend IntersectToSemiJoinRule to support n-way inputs
!set planner-rules "-EnumerableRules.ENUMERABLE_INTERSECT_RULE,
+ -CoreRules.INTERSECT_TO_DISTINCT,
+CoreRules.INTERSECT_TO_SEMI_JOIN"
select a from (values (1), (2), (3), (4), (5)) as t1 (a)
intersect
select a from (values (1), (2)) as t2 (a)
intersect
-select a from (values (1), (4)) as t3 (a);
+select a from (values (1), (4), (null)) as t3 (a);
Review Comment:
Sorry, I didn't explain it clearly. It is because the modified rule depends
on INTERSECT_MERGE, and if we had done INTERSECT_TO_SSI_JOIN first, it would
have produced the current result.
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