[jira] [Created] (SPARK-8956) Rollup produces incorrect result when group by contains expressions

["Yana Kadiyska (JIRA)" <ji...@apache.org>]

Yana Kadiyska created SPARK-8956:
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             Summary: Rollup produces incorrect result when group by contains expressions
                 Key: SPARK-8956
                 URL: https://issues.apache.org/jira/browse/SPARK-8956
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 1.4.0
            Reporter: Yana Kadiyska


Rollup produces incorrect results when group clause contains an expression
{code}case class KeyValue(key: Int, value: String)
val df = sc.parallelize(1 to 50).map(i=>KeyValue(i, i.toString)).toDF

df.registerTempTable("foo")

sqlContext.sql(“select count(*) as cnt, key % 100 as key,GROUPING__ID from foo group by key%100 with rollup”).show(100)
{code}

As a workaround, this works correctly:
{code}
val df1=df.withColumn("newkey",df("key")%100)
df1.registerTempTable("foo1")
sqlContext.sql("select count(*) as cnt, newkey as key,GROUPING__ID as grp from foo1 group by newkey with rollup").show(100)
{code}



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