tshauck commented on code in PR #342:
URL: https://github.com/apache/datafusion-comet/pull/342#discussion_r1593238627
##########
spark/src/test/scala/org/apache/comet/CometExpressionSuite.scala:
##########
@@ -1024,7 +1024,25 @@ class CometExpressionSuite extends CometTestBase with
AdaptiveSparkPlanHelper {
}
}
}
+ test("unhex") {
+ val table = "unhex_table"
+ withTable(table) {
+ sql(s"create table $table(col string) using parquet")
+
+ sql(s"""INSERT INTO $table VALUES
+ |('537061726B2053514C'),
+ |('737472696E67'),
+ |('\0'),
+ |(''),
+ |('###'),
+ |('G123'),
+ |('hello'),
+ |('A1B'),
+ |('0A1B')""".stripMargin)
+ checkSparkAnswerAndOperator(s"SELECT unhex(col) FROM $table")
Review Comment:
Looking at the spark repo a bit more, it looks like there was a bug in the
[3.2
implementation](https://github.com/apache/spark/commit/276abe3c3311300cffc6570b66f3977ea8172ff0)
that was fixed in subsequent versions.
How should I handle this? Like should I write a native implementation of the
erroneous code in order to be faithful to the spark, or have it be correct if
different?
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