Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7175#discussion_r33749395
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/misc.scala
---
@@ -174,8 +171,7 @@ case class Sha1(child: Expression) extends
UnaryExpression with AutoCastInputTyp
* A function that computes a cyclic redundancy check value and returns it
as a bigint
* For input of type [[BinaryType]]
*/
-case class Crc32(child: Expression)
- extends UnaryExpression with AutoCastInputTypes {
+case class Crc32(child: Expression) extends UnaryExpression with
ExpectsInputTypes {
--- End diff --
i need to think about whether we should support implicit casts from string
to binary. sql server does support that. hive doesn't, but hive chose to make a
lot of the udfs work against both types.
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