Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/20618#discussion_r169213260
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala
---
@@ -521,7 +542,15 @@ case class Signum(child: Expression) extends
UnaryMathExpression(math.signum, "S
case class Sin(child: Expression) extends UnaryMathExpression(math.sin,
"SIN")
@ExpressionDescription(
- usage = "_FUNC_(expr) - Returns the hyperbolic sine of `expr`.",
+ usage = """
+ _FUNC_(expr) - Returns hyperbolic sine of `expr`, as if computed by
--- End diff --
I think we need double spaces ahead - I think the key is consistency but
less invasive change.
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