Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/15513#discussion_r84574033
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala
---
@@ -666,8 +910,16 @@ case class ShiftLeft(left: Expression, right:
Expression)
* @param right number of bits to right shift.
*/
@ExpressionDescription(
- usage = "_FUNC_(a, b) - Bitwise right shift.",
- extended = "> SELECT _FUNC_(4, 1);\n 2")
+ usage = "_FUNC_(base, expr) - Bitwise right shift.",
--- End diff --
Might specify it's the "Bitwise (signed) right shift"
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