diff options
| -rw-r--r-- | sql/core/src/main/scala/org/apache/spark/sql/SchemaRDD.scala | 9 | ||||
| -rw-r--r-- | sql/core/src/test/scala/org/apache/spark/sql/DslQuerySuite.scala | 6 |
2 files changed, 15 insertions, 0 deletions
diff --git a/sql/core/src/main/scala/org/apache/spark/sql/SchemaRDD.scala b/sql/core/src/main/scala/org/apache/spark/sql/SchemaRDD.scala index 34200be3ac..2569815ebb 100644 --- a/sql/core/src/main/scala/org/apache/spark/sql/SchemaRDD.scala +++ b/sql/core/src/main/scala/org/apache/spark/sql/SchemaRDD.scala @@ -179,6 +179,15 @@ class SchemaRDD( new SchemaRDD(sqlContext, Sort(sortExprs, logicalPlan)) /** + * Limits the results by the given expressions. + * {{{ + * schemaRDD.limit(10) + * }}} + */ + def limit(limitExpr: Expression): SchemaRDD = + new SchemaRDD(sqlContext, Limit(limitExpr, logicalPlan)) + + /** * Performs a grouping followed by an aggregation. * * {{{ diff --git a/sql/core/src/test/scala/org/apache/spark/sql/DslQuerySuite.scala b/sql/core/src/test/scala/org/apache/spark/sql/DslQuerySuite.scala index be0f4a4c73..92a707ea57 100644 --- a/sql/core/src/test/scala/org/apache/spark/sql/DslQuerySuite.scala +++ b/sql/core/src/test/scala/org/apache/spark/sql/DslQuerySuite.scala @@ -71,6 +71,12 @@ class DslQuerySuite extends QueryTest { Seq((3,1), (3,2), (2,1), (2,2), (1,1), (1,2))) } + test("limit") { + checkAnswer( + testData.limit(10), + testData.take(10).toSeq) + } + test("average") { checkAnswer( testData2.groupBy()(Average('a)), |