wangyum commented on code in PR #42180:
URL: https://github.com/apache/spark/pull/42180#discussion_r1280131962
##########
sql/core/src/test/scala/org/apache/spark/sql/SubquerySuite.scala:
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@@ -2712,4 +2712,27 @@ class SubquerySuite extends QueryTest
expected)
}
}
+
+ test("SPARK-44562: Add OptimizeOneRowRelationSubquery in batch of Subquery")
{
+ withTempView("v1", "v2") {
+ sql(
+ """
+ |CREATE temporary VIEW v1
+ |AS
+ |SELECT id, 'foo' AS kind FROM (SELECT 1 AS id) t
+ |""".stripMargin)
+ sql(
+ """
+ |CREATE temporary VIEW v2
+ |AS
+ |SELECT * FROM v1 WHERE kind = (SELECT kind FROM v1 WHERE kind =
'foo')
+ |""".stripMargin)
+ val df = sql("SELECT * FROM v1 JOIN v2 ON v1.id = v2.id")
+ val filter = df.queryExecution.optimizedPlan.collect {
+ case f: Filter => f
+ }
+ assert(filter.isEmpty,
+ "Filter should be removed after OptimizeSubqueries and
OptimizeOneRowRelationSubquery")
+ }
+ }
Review Comment:
ok.
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