cloud-fan commented on a change in pull request #34729:
URL: https://github.com/apache/spark/pull/34729#discussion_r777970708
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala
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@@ -279,6 +280,49 @@ case class Ceil(child: Expression) extends
UnaryMathExpression(math.ceil, "CEIL"
override protected def withNewChildInternal(newChild: Expression): Ceil =
copy(child = newChild)
}
+object Ceil {
+ def apply(child: Expression, scale: Expression): Expression = {
+ val scaleV = scale.eval(EmptyRow)
+ if (scaleV == null) throw new AnalysisException("Scale parameter can not
be null")
+
+ scaleV.asInstanceOf[Int] match {
+ case 0 => Ceil(child)
+ case x if x < 0 => RoundCeil(Cast(child, LongType), scale)
+ case _ => RoundCeil(child, scale)
+ }
+ }
+}
+
+@ExpressionDescription(
+ usage = "_FUNC_(expr) - Returns the smallest integer not smaller than
`expr`.",
+ examples = """
+ Examples:
+ > SELECT _FUNC_(-0.1);
+ 0
+ > SELECT _FUNC_(5);
+ 5
+ > SELECT _FUNC_(3.1411, 3);
Review comment:
can we also show an example with negative scale?
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