While testing sparkSQL, we were running this group by with expression query
and got an exception. The same query worked fine on hive.

SELECT from_unixtime(floor(xyz.whenrequestreceived/1000.0 - 25200),
      'yyyy/MM/dd') as pst_date,
    count(*) as num_xyzs
  FROM
    all_matched_abc
  GROUP BY
    from_unixtime(floor(xyz.whenrequestreceived/1000.0 - 25200),
      'yyyy/MM/dd')

14/11/17 17:41:46 ERROR thriftserver.SparkSQLDriver: Failed in [SELECT
from_unixtime(floor(xyz.whenrequestreceived/1000.0 - 25200),
      'yyyy/MM/dd') as pst_date,
    count(*) as num_xyzs
  FROM
    all_matched_abc
  GROUP BY
    from_unixtime(floor(xyz.whenrequestreceived/1000.0 - 25200),
      'yyyy/MM/dd')
]
org.apache.spark.sql.catalyst.errors.package$TreeNodeException:
Expression not in GROUP BY:
HiveSimpleUdf#org.apache.hadoop.hive.ql.udf.UDFFromUnixTime(HiveGenericUdf#org.apache.hadoop.hive.ql.udf.generic.GenericUDFFloor(((CAST(xyz#183.whenrequestreceived
AS whenrequestreceived#187L, DoubleType) / 1000.0) - CAST(25200,
DoubleType))),yyyy/MM/dd) AS pst_date#179, tree:

Aggregate 
[HiveSimpleUdf#org.apache.hadoop.hive.ql.udf.UDFFromUnixTime(HiveGenericUdf#org.apache.hadoop.hive.ql.udf.generic.GenericUDFFloor(((CAST(xyz#183.whenrequestreceived,
DoubleType) / 1000.0) - CAST(25200, DoubleType))),yyyy/MM/dd)],
[HiveSimpleUdf#org.apache.hadoop.hive.ql.udf.UDFFromUnixTime(HiveGenericUdf#org.apache.hadoop.hive.ql.udf.generic.GenericUDFFloor(((CAST(xyz#183.whenrequestreceived
AS whenrequestreceived#187L, DoubleType) / 1000.0) - CAST(25200,
DoubleType))),yyyy/MM/dd) AS pst_date#179,COUNT(1) AS num_xyzs#180L]

 MetastoreRelation default, all_matched_abc, None
        at 
org.apache.spark.sql.catalyst.analysis.Analyzer$CheckAggregation$$anonfun$apply$3$$anonfun$applyOrElse$6.apply(Analyzer.scala:127)
        at 
org.apache.spark.sql.catalyst.analysis.Analyzer$CheckAggregation$$anonfun$apply$3$$anonfun$applyOrElse$6.apply(Analyzer.scala:125)
        at 
scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
        at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
        at 
org.apache.spark.sql.catalyst.analysis.Analyzer$CheckAggregation$$anonfun$apply$3.applyOrElse(Analyzer.scala:125)
        at 
org.apache.spark.sql.catalyst.analysis.Analyzer$CheckAggregation$$anonfun$apply$3.applyOrElse(Analyzer.scala:115)
        at 
org.apache.spark.sql.catalyst.trees.TreeNode.transformDown(TreeNode.scala:144)
        at 
org.apache.spark.sql.catalyst.trees.TreeNode.transform(TreeNode.scala:135)
        at 
org.apache.spark.sql.catalyst.analysis.Analyzer$CheckAggregation$.apply(Analyzer.scala:115)
        at 
org.apache.spark.sql.catalyst.analysis.Analyzer$CheckAggregation$.apply(Analyzer.scala:113)
        at 
org.apache.spark.sql.catalyst.rules.RuleExecutor$$anonfun$apply$1$$anonfun$apply$2.apply(RuleExecutor.scala:61)
        at 
org.apache.spark.sql.catalyst.rules.RuleExecutor$$anonfun$apply$1$$anonfun$apply$2.apply(RuleExecutor.scala:59)
        at 
scala.collection.IndexedSeqOptimized$class.foldl(IndexedSeqOptimized.scala:51)
        at 
scala.collection.IndexedSeqOptimized$class.foldLeft(IndexedSeqOptimized.scala:60)
        at scala.collection.mutable.WrappedArray.foldLeft(WrappedArray.scala:34)
        at 
org.apache.spark.sql.catalyst.rules.RuleExecutor$$anonfun$apply$1.apply(RuleExecutor.scala:59)
        at 
org.apache.spark.sql.catalyst.rules.RuleExecutor$$anonfun$apply$1.apply(RuleExecutor.scala:51)
        at scala.collection.immutable.List.foreach(List.scala:318)
        at 
org.apache.spark.sql.catalyst.rules.RuleExecutor.apply(RuleExecutor.scala:51)
        at 
org.apache.spark.sql.SQLContext$QueryExecution.analyzed$lzycompute(SQLContext.scala:411)
        at 
org.apache.spark.sql.SQLContext$QueryExecution.analyzed(SQLContext.scala:411)
        at 
org.apache.spark.sql.SQLContext$QueryExecution.withCachedData$lzycompute(SQLContext.scala:412)
        at 
org.apache.spark.sql.SQLContext$QueryExecution.withCachedData(SQLContext.scala:412)
        at 
org.apache.spark.sql.SQLContext$QueryExecution.optimizedPlan$lzycompute(SQLContext.scala:413)
        at 
org.apache.spark.sql.SQLContext$QueryExecution.optimizedPlan(SQLContext.scala:413)
        at 
org.apache.spark.sql.SQLContext$QueryExecution.sparkPlan$lzycompute(SQLContext.scala:418)
        at 
org.apache.spark.sql.SQLContext$QueryExecution.sparkPlan(SQLContext.scala:416)
        at 
org.apache.spark.sql.SQLContext$QueryExecution.executedPlan$lzycompute(SQLContext.scala:422)
        at 
org.apache.spark.sql.SQLContext$QueryExecution.executedPlan(SQLContext.scala:422)
        at 
org.apache.spark.sql.hive.HiveContext$QueryExecution.stringResult(HiveContext.scala:425)
        at 
org.apache.spark.sql.hive.thriftserver.AbstractSparkSQLDriver.run(AbstractSparkSQLDriver.scala:59)
        at 
org.apache.spark.sql.hive.thriftserver.SparkSQLCLIDriver.processCmd(SparkSQLCLIDriver.scala:276)
        at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:423)
        at 
org.apache.spark.sql.hive.thriftserver.SparkSQLCLIDriver$.main(SparkSQLCLIDriver.scala:211)
        at 
org.apache.spark.sql.hive.thriftserver.SparkSQLCLIDriver.main(SparkSQLCLIDriver.scala)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:483)
        at org.apache.spark.deploy.SparkSubmit$.launch(SparkSubmit.scala:353)
        at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:75)
        at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)

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