fix pattern match null

Eric5553 · Eric5553 · commit ea136d1e996a · 2020-04-09T23:04:13.000+08:00
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala
@@ -268,7 +268,7 @@ abstract class Expression extends TreeNode[Expression] {
 
   protected def flatArgumentStrings: Iterator[String] = flatArguments.map {
     case e: Expression => e.argumentString
-    case arg: Any => arg.toString
+    case arg => s"$arg"
   }
 
   // Marks this as final, Expression.verboseString should never be called, and thus shouldn't be

Original file line number	Diff line number	Diff line change
`@@ -268,7 +268,7 @@ abstract class Expression extends TreeNode[Expression] {`
`268`	`268`
`269`	`269`	`protected def flatArgumentStrings: Iterator[String] = flatArguments.map {`
`270`	`270`	`case e: Expression => e.argumentString`
`271`		`- case arg: Any => arg.toString`
	`271`	`+ case arg => s"$arg"`
`272`	`272`	`}`
`273`	`273`
`274`	`274`	`// Marks this as final, Expression.verboseString should never be called, and thus shouldn't be`