Use interpolation.

marmbrus · marmbrus · commit d8b5abcd61b6 · 2014-11-13T22:59:33.000-08:00
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/nullFunctions.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/nullFunctions.scala
@@ -39,7 +39,7 @@ case class Coalesce(children: Seq[Expression]) extends Expression {
   } else {
     val childTypes = children.map(c => s"$c: ${c.dataType}").mkString(", ")
     throw new UnresolvedException(
-      this, "Coalesce cannot have children of different types. $childTypes")
+      this, s"Coalesce cannot have children of different types. $childTypes")
   }
 
   override def eval(input: Row): Any = {

Original file line number	Diff line number	Diff line change
`@@ -39,7 +39,7 @@ case class Coalesce(children: Seq[Expression]) extends Expression {`
`39`	`39`	`} else {`
`40`	`40`	`val childTypes = children.map(c => s"$c: ${c.dataType}").mkString(", ")`
`41`	`41`	`throw new UnresolvedException(`
`42`		`- this, "Coalesce cannot have children of different types. $childTypes")`
	`42`	`+ this, s"Coalesce cannot have children of different types. $childTypes")`
`43`	`43`	`}`
`44`	`44`
`45`	`45`	`override def eval(input: Row): Any = {`