cloud-fan commented on code in PR #46034:
URL: https://github.com/apache/spark/pull/46034#discussion_r1565741611
##########
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/RewriteWithExpressionSuite.scala:
##########
@@ -229,4 +236,85 @@ class RewriteWithExpressionSuite extends PlanTest {
.analyze
)
}
+
+ test("WITH expression in grouping exprs") {
+ val a = testRelation.output.head
+ val expr1 = With.create((a + 1, 0)) { case Seq(ref) =>
+ ref * ref
+ }
+ val expr2 = With.create((a + 1, 1)) { case Seq(ref) =>
+ ref * ref
+ }
+ val expr3 = With.create((a + 1, 2)) { case Seq(ref) =>
+ ref * ref
+ }
+ val plan = testRelation.groupBy(expr1)(
+ (expr2 + 2).as("col1"),
+ count(expr3 - 3).as("col2")
+ )
+ val commonExpr1Name = "_common_expr_0"
+ // Note that _common_expr_1 gets deduplicated by
PullOutGroupingExpressions.
+ val commonExpr2Name = "_common_expr_2"
+ val groupingExprName = "_groupingexpression"
+ val countAlias = count(expr3 - 3).toString
+ comparePlans(
+ Optimizer.execute(plan),
+ testRelation
+ .select(testRelation.output :+ (a + 1).as(commonExpr1Name): _*)
+ .select(testRelation.output :+
+ ($"$commonExpr1Name" * $"$commonExpr1Name").as(groupingExprName): _*)
+ .select(testRelation.output ++ Seq($"$groupingExprName", (a +
1).as(commonExpr2Name)): _*)
+ .groupBy($"$groupingExprName")(
+ $"$groupingExprName",
+ count($"$commonExpr2Name" * $"$commonExpr2Name" - 3).as(countAlias)
+ )
+ .select(($"$groupingExprName" + 2).as("col1"),
$"`$countAlias`".as("col2"))
+ .analyze
+ )
+ // Running CollapseProject after the rule cleans up the unnecessary
projections.
+ comparePlans(
+ CollapseProject(Optimizer.execute(plan)),
+ testRelation
+ .select(testRelation.output :+ (a + 1).as(commonExpr1Name): _*)
+ .select(testRelation.output ++ Seq(
+ ($"$commonExpr1Name" * $"$commonExpr1Name").as(groupingExprName),
+ (a + 1).as(commonExpr2Name)): _*)
+ .groupBy($"$groupingExprName")(
+ ($"$groupingExprName" + 2).as("col1"),
+ count($"$commonExpr2Name" * $"$commonExpr2Name" - 3).as("col2")
+ )
+ .analyze
+ )
+ }
+
+ test("WITH expression in aggregate exprs") {
+ val Seq(a, b) = testRelation.output
+ val expr1 = With.create((a + 1, 0)) { case Seq(ref) =>
+ ref * ref
Review Comment:
can we test aggregate function as the common expression?
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