Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/6721#discussion_r32652438
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/math.scala
---
@@ -205,6 +217,26 @@ case class ToRadians(child: Expression) extends
UnaryMathExpression(math.toRadia
override def funcName: String = "toRadians"
}
+case class Bin(child: Expression)
+ extends AbstractUnaryMathExpression[Long, String]("BIN") {
+
+ override def expectedChildTypes: Seq[DataType] = Seq(LongType)
+ override def dataType: DataType = StringType
+
+ override def eval(input: catalyst.InternalRow): Any = {
+ val evalE = child.eval(input)
+ if (evalE == null) {
+ null
+ } else {
+ UTF8String.fromString(JLong.toBinaryString(evalE.asInstanceOf[Long]))
+ }
+ }
+
+ override def genCode(ctx: CodeGenContext, ev: GeneratedExpressionCode):
String = {
+ defineCodeGen(ctx, ev, (c) =>
+
s"org.apache.spark.unsafe.types.UTF8String.fromString(java.lang.Long.toBinaryString($c))")
--- End diff --
"org.apache.spark.unsafe.types.UTF8String" could be `${ctx.stringType}`
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