Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/15677#discussion_r85978972 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala --- @@ -616,8 +685,12 @@ case class LastDay(startDate: Expression) extends UnaryExpression with ImplicitC */ // scalastyle:off line.size.limit @ExpressionDescription( - usage = "_FUNC_(start_date, day_of_week) - Returns the first date which is later than start_date and named as indicated.", - extended = "> SELECT _FUNC_('2015-01-14', 'TU');\n '2015-01-20'") + usage = "_FUNC_(start_date, day_of_week) - Returns the first date which is later than `start_date` and named as indicated.", --- End diff -- This needs a description of `day_of_week`
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