Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/11846#discussion_r56930471
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/SQLQuerySuite.scala
---
@@ -459,25 +460,96 @@ class SQLQuerySuite extends QueryTest with
SharedSQLContext {
Seq(Row(1, 3), Row(2, 3), Row(3, 3)))
}
- test("literal in agg grouping expressions") {
+ test("Group By Ordinal - basic") {
checkAnswer(
- sql("SELECT a, count(1) FROM testData2 GROUP BY a, 1"),
- Seq(Row(1, 2), Row(2, 2), Row(3, 2)))
- checkAnswer(
- sql("SELECT a, count(2) FROM testData2 GROUP BY a, 2"),
- Seq(Row(1, 2), Row(2, 2), Row(3, 2)))
+ sql("SELECT a, sum(b) FROM testData2 GROUP BY 1"),
+ sql("SELECT a, sum(b) FROM testData2 GROUP BY a"))
+ // duplicate group-by columns
checkAnswer(
sql("SELECT a, 1, sum(b) FROM testData2 GROUP BY a, 1"),
sql("SELECT a, 1, sum(b) FROM testData2 GROUP BY a"))
+
+ checkAnswer(
+ sql("SELECT a, 1, sum(b) FROM testData2 GROUP BY 1, 2"),
+ sql("SELECT a, 1, sum(b) FROM testData2 GROUP BY a"))
+ }
+
+ test("Group By Ordinal - non aggregate expressions") {
+ checkAnswer(
+ sql("SELECT a, b + 2, count(2) FROM testData2 GROUP BY a, 2"),
+ sql("SELECT a, b + 2, count(2) FROM testData2 GROUP BY a, b + 2"))
+
+ checkAnswer(
+ sql("SELECT a, b + 2, count(2) FROM testData2 GROUP BY a, b + 2"),
+ Seq(Row(1, 3, 1), Row(1, 4, 1), Row(2, 3, 1), Row(2, 4, 1), Row(3,
3, 1), Row(3, 4, 1)))
+ }
+
+ test("Group By Ordinal - non-foldable constant expression") {
+ checkAnswer(
+ sql("SELECT a, b, sum(b) FROM testData2 GROUP BY a, b, 1 + 0"),
+ sql("SELECT a, b, sum(b) FROM testData2 GROUP BY a, b"))
+
checkAnswer(
sql("SELECT a, 1, sum(b) FROM testData2 GROUP BY a, 1 + 2"),
sql("SELECT a, 1, sum(b) FROM testData2 GROUP BY a"))
+ }
+
+ test("Group By Ordinal - alias") {
+ checkAnswer(
+ sql("SELECT a, (b + 2) as c, count(2) FROM testData2 GROUP BY a, 2"),
+ sql("SELECT a, b + 2, count(2) FROM testData2 GROUP BY a, b + 2"))
+
+ checkAnswer(
+ sql("SELECT a as b, b as a, sum(b) FROM testData2 GROUP BY 1, 2"),
+ sql("SELECT a, b, sum(b) FROM testData2 GROUP BY a, b"))
+ }
+
+ test("Group By Ordinal - constants") {
checkAnswer(
sql("SELECT 1, 2, sum(b) FROM testData2 GROUP BY 1, 2"),
sql("SELECT 1, 2, sum(b) FROM testData2"))
}
+ test("Group By Ordinal - negative cases") {
+ intercept[UnresolvedException[Aggregate]] {
+ sql("SELECT a, b FROM testData2 GROUP BY -1")
+ }
+
+ intercept[UnresolvedException[Aggregate]] {
+ sql("SELECT a, b FROM testData2 GROUP BY 3")
+ }
+
+ val e = intercept[UnresolvedException[Aggregate]](
+ sql("SELECT SUM(a) FROM testData2 GROUP BY 1"))
+ assert(e.getMessage contains
+ "Invalid call to Group by position: the '1'th column in the select
is an aggregate function")
+
+ var ae = intercept[AnalysisException](
+ sql("SELECT a, rand(0), sum(b) FROM testData2 GROUP BY a, 2"))
+ assert(ae.getMessage contains
+ "nondeterministic expression rand(0) should not appear in grouping
expression")
+
+ ae = intercept[AnalysisException](
+ sql("SELECT * FROM testData2 GROUP BY a, b, 1"))
--- End diff --
where do we handle the star case?
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