cloud-fan commented on a change in pull request #31595:
URL: https://github.com/apache/spark/pull/31595#discussion_r581618859
##########
File path: sql/core/src/test/scala/org/apache/spark/sql/SubquerySuite.scala
##########
@@ -1013,118 +1014,120 @@ class SubquerySuite extends QueryTest with
SharedSparkSession with AdaptiveSpark
}
test("SPARK-23957 Remove redundant sort from subquery plan(in subquery)") {
- withTempView("t1", "t2", "t3") {
- Seq((1, 1), (2, 2)).toDF("c1", "c2").createOrReplaceTempView("t1")
- Seq((1, 1), (2, 2)).toDF("c1", "c2").createOrReplaceTempView("t2")
- Seq((1, 1, 1), (2, 2, 2)).toDF("c1", "c2",
"c3").createOrReplaceTempView("t3")
-
- // Simple order by
- val query1 =
- """
- |SELECT c1 FROM t1
- |WHERE
- |c1 IN (SELECT c1 FROM t2 ORDER BY c1)
+ withSQLConf(SQLConf.OPTIMIZER_EXCLUDED_RULES.key ->
RemoveNoopUnion.ruleName) {
+ withTempView("t1", "t2", "t3") {
+ Seq((1, 1), (2, 2)).toDF("c1", "c2").createOrReplaceTempView("t1")
+ Seq((1, 1), (2, 2)).toDF("c1", "c2").createOrReplaceTempView("t2")
+ Seq((1, 1, 1), (2, 2, 2)).toDF("c1", "c2",
"c3").createOrReplaceTempView("t3")
+
+ // Simple order by
+ val query1 =
+ """
+ |SELECT c1 FROM t1
+ |WHERE
+ |c1 IN (SELECT c1 FROM t2 ORDER BY c1)
""".stripMargin
- assert(getNumSortsInQuery(query1) == 0)
+ assert(getNumSortsInQuery(query1) == 0)
- // Nested order bys
- val query2 =
- """
- |SELECT c1
- |FROM t1
- |WHERE c1 IN (SELECT c1
- | FROM (SELECT *
- | FROM t2
- | ORDER BY c2)
- | ORDER BY c1)
+ // Nested order bys
+ val query2 =
+ """
+ |SELECT c1
+ |FROM t1
+ |WHERE c1 IN (SELECT c1
+ | FROM (SELECT *
+ | FROM t2
+ | ORDER BY c2)
+ | ORDER BY c1)
""".stripMargin
- assert(getNumSortsInQuery(query2) == 0)
+ assert(getNumSortsInQuery(query2) == 0)
- // nested IN
- val query3 =
- """
- |SELECT c1
- |FROM t1
- |WHERE c1 IN (SELECT c1
- | FROM t2
- | WHERE c1 IN (SELECT c1
- | FROM t3
- | WHERE c1 = 1
- | ORDER BY c3)
- | ORDER BY c2)
+ // nested IN
+ val query3 =
+ """
+ |SELECT c1
+ |FROM t1
+ |WHERE c1 IN (SELECT c1
+ | FROM t2
+ | WHERE c1 IN (SELECT c1
+ | FROM t3
+ | WHERE c1 = 1
+ | ORDER BY c3)
+ | ORDER BY c2)
""".stripMargin
- assert(getNumSortsInQuery(query3) == 0)
+ assert(getNumSortsInQuery(query3) == 0)
- // Complex subplan and multiple sorts
- val query4 =
- """
- |SELECT c1
- |FROM t1
- |WHERE c1 IN (SELECT c1
- | FROM (SELECT c1, c2, count(*)
- | FROM t2
- | GROUP BY c1, c2
- | HAVING count(*) > 0
- | ORDER BY c2)
- | ORDER BY c1)
+ // Complex subplan and multiple sorts
+ val query4 =
+ """
+ |SELECT c1
+ |FROM t1
+ |WHERE c1 IN (SELECT c1
+ | FROM (SELECT c1, c2, count(*)
+ | FROM t2
+ | GROUP BY c1, c2
+ | HAVING count(*) > 0
+ | ORDER BY c2)
+ | ORDER BY c1)
""".stripMargin
- assert(getNumSortsInQuery(query4) == 0)
+ assert(getNumSortsInQuery(query4) == 0)
- // Join in subplan
- val query5 =
- """
- |SELECT c1 FROM t1
- |WHERE
- |c1 IN (SELECT t2.c1 FROM t2, t3
- | WHERE t2.c1 = t3.c1
- | ORDER BY t2.c1)
+ // Join in subplan
+ val query5 =
+ """
+ |SELECT c1 FROM t1
+ |WHERE
+ |c1 IN (SELECT t2.c1 FROM t2, t3
+ | WHERE t2.c1 = t3.c1
+ | ORDER BY t2.c1)
""".stripMargin
- assert(getNumSortsInQuery(query5) == 0)
+ assert(getNumSortsInQuery(query5) == 0)
- val query6 =
- """
- |SELECT c1
- |FROM t1
- |WHERE (c1, c2) IN (SELECT c1, max(c2)
- | FROM (SELECT c1, c2, count(*)
- | FROM t2
- | GROUP BY c1, c2
- | HAVING count(*) > 0
- | ORDER BY c2)
- | GROUP BY c1
- | HAVING max(c2) > 0
- | ORDER BY c1)
+ val query6 =
+ """
+ |SELECT c1
+ |FROM t1
+ |WHERE (c1, c2) IN (SELECT c1, max(c2)
+ | FROM (SELECT c1, c2, count(*)
+ | FROM t2
+ | GROUP BY c1, c2
+ | HAVING count(*) > 0
+ | ORDER BY c2)
+ | GROUP BY c1
+ | HAVING max(c2) > 0
+ | ORDER BY c1)
""".stripMargin
- assert(getNumSortsInQuery(query6) == 0)
+ assert(getNumSortsInQuery(query6) == 0)
- // Cases when sort is not removed from the plan
- // Limit on top of sort
- val query7 =
+ // Cases when sort is not removed from the plan
+ // Limit on top of sort
+ val query7 =
"""
- |SELECT c1 FROM t1
- |WHERE
- |c1 IN (SELECT c1 FROM t2 ORDER BY c1 limit 1)
+ |SELECT c1 FROM t1
+ |WHERE
+ |c1 IN (SELECT c1 FROM t2 ORDER BY c1 limit 1)
""".stripMargin
- assert(getNumSortsInQuery(query7) == 1)
+ assert(getNumSortsInQuery(query7) == 1)
- // Sort below a set operations (intersect, union)
- val query8 =
- """
- |SELECT c1 FROM t1
- |WHERE
- |c1 IN ((
- | SELECT c1 FROM t2
- | ORDER BY c1
- | )
- | UNION
- | (
- | SELECT c1 FROM t2
- | ORDER BY c1
- | ))
+ // Sort below a set operations (intersect, union)
+ val query8 =
+ """
+ |SELECT c1 FROM t1
+ |WHERE
+ |c1 IN ((
+ | SELECT c1 FROM t2
+ | ORDER BY c1
+ | )
+ | UNION
Review comment:
If this is the only issue, we can probably add a filter in one side to
avoid optimizing the Union.
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