Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7115#discussion_r33654264
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringOperations.scala
---
@@ -310,3 +311,20 @@ case class StringLength(child: Expression) extends
UnaryExpression with AutoCast
defineCodeGen(ctx, ev, c => s"($c).length()")
}
}
+
+/**
+ * A function that return soundex name of a ID
+ */
+case class SoundEx(child: Expression) extends UnaryExpression with
AutoCastInputTypes{
+ @transient lazy val so = new Soundex
+ override def dataType: DataType = StringType
+ override def expectedChildTypes: Seq[DataType] = Seq(StringType)
+ override def eval(input: InternalRow): Any = {
+ val string = child.eval(input)
+ if (string == null) null
--- End diff --
```
if (string eq null) {
null
} else {
UTF8String.fromString(so.encode(str))
}
```
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