xiedeyantu commented on code in PR #4361:
URL: https://github.com/apache/calcite/pull/4361#discussion_r2080612399
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core/src/test/resources/sql/planner.iq:
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@@ -128,9 +128,64 @@ EnumerableCalc(expr#0..2=[{inputs}], $f0=[$t1], $f1=[$t2])
EnumerableCalc(expr#0=[{inputs}], expr#1=[IS NOT NULL($t0)],
DEPTNO=[$t0], $condition=[$t1])
EnumerableValues(tuples=[[{ 10 }, { 10 }, { 20 }, { 30 }, { 30 }, {
50 }, { 50 }, { 60 }, { null }]])
!plan
+!set planner-rules original
+
+# [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 (1.0), (2.0), (3.0), (4.0), (5.0)) as t1 (a)
+intersect
+select a from (values (1), (2)) as t2 (a)
+intersect
+select a from (values (1.0), (4.0), (null)) as t3 (a);
++-----+
+| A |
++-----+
+| 1.0 |
++-----+
+(1 row)
+!ok
+
+EnumerableCalc(expr#0=[{inputs}], expr#1=[CAST($t0):DECIMAL(11, 1)], A=[$t1])
Review Comment:
In fact, it is also generated by new rules, but it matches 2-way multiple
times and does not match 3-way.
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