cloud-fan commented on code in PR #52546:
URL: https://github.com/apache/spark/pull/52546#discussion_r2420075650
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sql/connect/client/jvm/src/test/scala/org/apache/spark/sql/DataFrameTableValuedFunctionsSuite.scala:
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@@ -23,6 +23,17 @@ import org.apache.spark.sql.functions._
class DataFrameTableValuedFunctionsSuite extends QueryTest with
RemoteSparkSession {
import testImplicits._
+ test("preserve plan ID in ResolveSQLFunctions with UDF") {
+ // Create a simple SQL function / UDF for testing purposes.
+ spark.sql("""CREATE OR REPLACE FUNCTION funct(x INT) RETURNS STRING RETURN
+ CASE WHEN x >= 0 THEN 'foo' ELSE 'bar' END""")
+ val df = spark
+ .sql("SELECT * FROM VALUES (0, 1)")
+ .select(expr("funct(col1)").alias("col2"))
+ // Now use the UDF in a query that will initiate plan rewrite by
ResolveSQLFunctions.
+ df.groupBy("col2").agg(count("*")).explain(true)
Review Comment:
can we use `checkAnswer`?
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