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Diffstat (limited to 'sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/Last.scala')
| -rw-r--r-- | sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/Last.scala | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/Last.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/Last.scala index be7e12d7a2..b05d74b49b 100644 --- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/Last.scala +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/Last.scala @@ -28,6 +28,8 @@ import org.apache.spark.sql.types._ * is used) its result will not be deterministic (unless the input table is sorted and has * a single partition, and we use a single reducer to do the aggregation.). */ +@ExpressionDescription( + usage = "_FUNC_(expr,isIgnoreNull) - Returns the last value of `child` for a group of rows.") case class Last(child: Expression, ignoreNullsExpr: Expression) extends DeclarativeAggregate { def this(child: Expression) = this(child, Literal.create(false, BooleanType)) |