PREHOOK: query: -- Set merging to false above to make the explain more readable

CREATE TABLE T1(a STRING, b STRING, c STRING) ROW FORMAT DELIMITED FIELDS TERMINATED BY ' ' STORED AS TEXTFILE
PREHOOK: type: CREATETABLE
POSTHOOK: query: -- Set merging to false above to make the explain more readable

CREATE TABLE T1(a STRING, b STRING, c STRING) ROW FORMAT DELIMITED FIELDS TERMINATED BY ' ' STORED AS TEXTFILE
POSTHOOK: type: CREATETABLE
POSTHOOK: Output: default@T1
PREHOOK: query: LOAD DATA LOCAL INPATH '../data/files/grouping_sets.txt' INTO TABLE T1
PREHOOK: type: LOAD
PREHOOK: Output: default@t1
POSTHOOK: query: LOAD DATA LOCAL INPATH '../data/files/grouping_sets.txt' INTO TABLE T1
POSTHOOK: type: LOAD
POSTHOOK: Output: default@t1
PREHOOK: query: -- This tests that cubes and rollups work fine where the source is a sub-query
EXPLAIN
SELECT a, b, count(*) FROM
(SELECT a, b, count(1) from T1 group by a, b) subq1 group by a, b with cube
PREHOOK: type: QUERY
POSTHOOK: query: -- This tests that cubes and rollups work fine where the source is a sub-query
EXPLAIN
SELECT a, b, count(*) FROM
(SELECT a, b, count(1) from T1 group by a, b) subq1 group by a, b with cube
POSTHOOK: type: QUERY
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_SUBQUERY (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME T1))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_TABLE_OR_COL a)) (TOK_SELEXPR (TOK_TABLE_OR_COL b)) (TOK_SELEXPR (TOK_FUNCTION count 1))) (TOK_GROUPBY (TOK_TABLE_OR_COL a) (TOK_TABLE_OR_COL b)))) subq1)) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_TABLE_OR_COL a)) (TOK_SELEXPR (TOK_TABLE_OR_COL b)) (TOK_SELEXPR (TOK_FUNCTIONSTAR count))) (TOK_CUBE_GROUPBY (TOK_TABLE_OR_COL a) (TOK_TABLE_OR_COL b))))

STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-2 depends on stages: Stage-1
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Alias -> Map Operator Tree:
        subq1:t1 
          TableScan
            alias: t1
            Select Operator
              expressions:
                    expr: a
                    type: string
                    expr: b
                    type: string
              outputColumnNames: a, b
              Group By Operator
                aggregations:
                      expr: count(1)
                bucketGroup: false
                keys:
                      expr: a
                      type: string
                      expr: b
                      type: string
                mode: hash
                outputColumnNames: _col0, _col1, _col2
                Reduce Output Operator
                  key expressions:
                        expr: _col0
                        type: string
                        expr: _col1
                        type: string
                  sort order: ++
                  Map-reduce partition columns:
                        expr: _col0
                        type: string
                        expr: _col1
                        type: string
                  tag: -1
                  value expressions:
                        expr: _col2
                        type: bigint
      Reduce Operator Tree:
        Group By Operator
          aggregations:
                expr: count(VALUE._col0)
          bucketGroup: false
          keys:
                expr: KEY._col0
                type: string
                expr: KEY._col1
                type: string
          mode: mergepartial
          outputColumnNames: _col0, _col1, _col2
          Select Operator
            expressions:
                  expr: _col0
                  type: string
                  expr: _col1
                  type: string
            outputColumnNames: _col0, _col1
            Group By Operator
              aggregations:
                    expr: count()
              bucketGroup: false
              keys:
                    expr: _col0
                    type: string
                    expr: _col1
                    type: string
                    expr: '0'
                    type: string
              mode: hash
              outputColumnNames: _col0, _col1, _col2, _col3
              File Output Operator
                compressed: false
                GlobalTableId: 0
                table:
                    input format: org.apache.hadoop.mapred.SequenceFileInputFormat
                    output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat

  Stage: Stage-2
    Map Reduce
      Alias -> Map Operator Tree:
#### A masked pattern was here ####
            Reduce Output Operator
              key expressions:
                    expr: _col0
                    type: string
                    expr: _col1
                    type: string
                    expr: _col2
                    type: string
              sort order: +++
              Map-reduce partition columns:
                    expr: _col0
                    type: string
                    expr: _col1
                    type: string
                    expr: _col2
                    type: string
              tag: -1
              value expressions:
                    expr: _col3
                    type: bigint
      Reduce Operator Tree:
        Group By Operator
          aggregations:
                expr: count(VALUE._col0)
          bucketGroup: false
          keys:
                expr: KEY._col0
                type: string
                expr: KEY._col1
                type: string
                expr: KEY._col2
                type: string
          mode: mergepartial
          outputColumnNames: _col0, _col1, _col2, _col3
          Select Operator
            expressions:
                  expr: _col0
                  type: string
                  expr: _col1
                  type: string
                  expr: _col3
                  type: bigint
            outputColumnNames: _col0, _col1, _col2
            File Output Operator
              compressed: false
              GlobalTableId: 0
              table:
                  input format: org.apache.hadoop.mapred.TextInputFormat
                  output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat

  Stage: Stage-0
    Fetch Operator
      limit: -1


PREHOOK: query: SELECT a, b, count(*) FROM
(SELECT a, b, count(1) from T1 group by a, b) subq1 group by a, b with cube
PREHOOK: type: QUERY
PREHOOK: Input: default@t1
#### A masked pattern was here ####
POSTHOOK: query: SELECT a, b, count(*) FROM
(SELECT a, b, count(1) from T1 group by a, b) subq1 group by a, b with cube
POSTHOOK: type: QUERY
POSTHOOK: Input: default@t1
#### A masked pattern was here ####
NULL	NULL	6
NULL	1	2
NULL	2	3
NULL	3	1
1	NULL	1
1	1	1
2	NULL	2
2	2	1
2	3	1
3	NULL	1
3	2	1
5	NULL	1
5	2	1
8	NULL	1
8	1	1
PREHOOK: query: -- Since 4 grouping sets would be generated for the cube, an additional MR job should be created
EXPLAIN
SELECT a, b, count(*) FROM
(SELECT a, b, count(1) from T1 group by a, b) subq1 group by a, b with cube
PREHOOK: type: QUERY
POSTHOOK: query: -- Since 4 grouping sets would be generated for the cube, an additional MR job should be created
EXPLAIN
SELECT a, b, count(*) FROM
(SELECT a, b, count(1) from T1 group by a, b) subq1 group by a, b with cube
POSTHOOK: type: QUERY
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_SUBQUERY (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME T1))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_TABLE_OR_COL a)) (TOK_SELEXPR (TOK_TABLE_OR_COL b)) (TOK_SELEXPR (TOK_FUNCTION count 1))) (TOK_GROUPBY (TOK_TABLE_OR_COL a) (TOK_TABLE_OR_COL b)))) subq1)) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_TABLE_OR_COL a)) (TOK_SELEXPR (TOK_TABLE_OR_COL b)) (TOK_SELEXPR (TOK_FUNCTIONSTAR count))) (TOK_CUBE_GROUPBY (TOK_TABLE_OR_COL a) (TOK_TABLE_OR_COL b))))

STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-2 depends on stages: Stage-1
  Stage-3 depends on stages: Stage-2
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Alias -> Map Operator Tree:
        subq1:t1 
          TableScan
            alias: t1
            Select Operator
              expressions:
                    expr: a
                    type: string
                    expr: b
                    type: string
              outputColumnNames: a, b
              Group By Operator
                aggregations:
                      expr: count(1)
                bucketGroup: false
                keys:
                      expr: a
                      type: string
                      expr: b
                      type: string
                mode: hash
                outputColumnNames: _col0, _col1, _col2
                Reduce Output Operator
                  key expressions:
                        expr: _col0
                        type: string
                        expr: _col1
                        type: string
                  sort order: ++
                  Map-reduce partition columns:
                        expr: _col0
                        type: string
                        expr: _col1
                        type: string
                  tag: -1
                  value expressions:
                        expr: _col2
                        type: bigint
      Reduce Operator Tree:
        Group By Operator
          aggregations:
                expr: count(VALUE._col0)
          bucketGroup: false
          keys:
                expr: KEY._col0
                type: string
                expr: KEY._col1
                type: string
          mode: mergepartial
          outputColumnNames: _col0, _col1, _col2
          Select Operator
            expressions:
                  expr: _col0
                  type: string
                  expr: _col1
                  type: string
            outputColumnNames: _col0, _col1
            Group By Operator
              aggregations:
                    expr: count()
              bucketGroup: false
              keys:
                    expr: _col0
                    type: string
                    expr: _col1
                    type: string
              mode: hash
              outputColumnNames: _col0, _col1, _col2
              File Output Operator
                compressed: false
                GlobalTableId: 0
                table:
                    input format: org.apache.hadoop.mapred.SequenceFileInputFormat
                    output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat

  Stage: Stage-2
    Map Reduce
      Alias -> Map Operator Tree:
#### A masked pattern was here ####
            Reduce Output Operator
              key expressions:
                    expr: _col0
                    type: string
                    expr: _col1
                    type: string
              sort order: ++
              Map-reduce partition columns:
                    expr: _col0
                    type: string
                    expr: _col1
                    type: string
              tag: -1
              value expressions:
                    expr: _col2
                    type: bigint
      Reduce Operator Tree:
        Group By Operator
          aggregations:
                expr: count(VALUE._col0)
          bucketGroup: false
          keys:
                expr: KEY._col0
                type: string
                expr: KEY._col1
                type: string
                expr: '0'
                type: string
          mode: partials
          outputColumnNames: _col0, _col1, _col2, _col3
          File Output Operator
            compressed: false
            GlobalTableId: 0
            table:
                input format: org.apache.hadoop.mapred.SequenceFileInputFormat
                output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat

  Stage: Stage-3
    Map Reduce
      Alias -> Map Operator Tree:
#### A masked pattern was here ####
            Reduce Output Operator
              key expressions:
                    expr: _col0
                    type: string
                    expr: _col1
                    type: string
                    expr: _col2
                    type: string
              sort order: +++
              Map-reduce partition columns:
                    expr: _col0
                    type: string
                    expr: _col1
                    type: string
                    expr: _col2
                    type: string
              tag: -1
              value expressions:
                    expr: _col3
                    type: bigint
      Reduce Operator Tree:
        Group By Operator
          aggregations:
                expr: count(VALUE._col0)
          bucketGroup: false
          keys:
                expr: KEY._col0
                type: string
                expr: KEY._col1
                type: string
                expr: KEY._col2
                type: string
          mode: final
          outputColumnNames: _col0, _col1, _col2, _col3
          Select Operator
            expressions:
                  expr: _col0
                  type: string
                  expr: _col1
                  type: string
                  expr: _col3
                  type: bigint
            outputColumnNames: _col0, _col1, _col2
            File Output Operator
              compressed: false
              GlobalTableId: 0
              table:
                  input format: org.apache.hadoop.mapred.TextInputFormat
                  output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat

  Stage: Stage-0
    Fetch Operator
      limit: -1


PREHOOK: query: SELECT a, b, count(*) FROM
(SELECT a, b, count(1) from T1 group by a, b) subq1 group by a, b with cube
PREHOOK: type: QUERY
PREHOOK: Input: default@t1
#### A masked pattern was here ####
POSTHOOK: query: SELECT a, b, count(*) FROM
(SELECT a, b, count(1) from T1 group by a, b) subq1 group by a, b with cube
POSTHOOK: type: QUERY
POSTHOOK: Input: default@t1
#### A masked pattern was here ####
NULL	NULL	6
NULL	1	2
NULL	2	3
NULL	3	1
1	NULL	1
1	1	1
2	NULL	2
2	2	1
2	3	1
3	NULL	1
3	2	1
5	NULL	1
5	2	1
8	NULL	1
8	1	1