query: CREATE TABLE dest1(key STRING, c1 INT, c2 STRING) STORED AS TEXTFILE
query: EXPLAIN
FROM src
INSERT OVERWRITE TABLE dest1 SELECT substr(src.key,1,1), count(DISTINCT substr(src.value,5)), concat(substr(src.key,1,1),sum(substr(src.value,5))) GROUP BY substr(src.key,1,1)
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_TABREF src)) (TOK_INSERT (TOK_DESTINATION (TOK_TAB dest1)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION substr (. (TOK_TABLE_OR_COL src) key) 1 1)) (TOK_SELEXPR (TOK_FUNCTIONDI count (TOK_FUNCTION substr (. (TOK_TABLE_OR_COL src) value) 5))) (TOK_SELEXPR (TOK_FUNCTION concat (TOK_FUNCTION substr (. (TOK_TABLE_OR_COL src) key) 1 1) (TOK_FUNCTION sum (TOK_FUNCTION substr (. (TOK_TABLE_OR_COL src) value) 5))))) (TOK_GROUPBY (TOK_FUNCTION substr (. (TOK_TABLE_OR_COL src) key) 1 1))))

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

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Alias -> Map Operator Tree:
        src 
          TableScan
            alias: src
            Select Operator
              expressions:
                    expr: key
                    type: string
                    expr: value
                    type: string
              outputColumnNames: key, value
              Group By Operator
                aggregations:
                      expr: count(DISTINCT substr(value, 5))
                      expr: sum(substr(value, 5))
                keys:
                      expr: substr(key, 1, 1)
                      type: string
                      expr: substr(value, 5)
                      type: string
                mode: hash
                outputColumnNames: _col0, _col1, _col2, _col3
                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
                        expr: _col3
                        type: double
      Reduce Operator Tree:
        Group By Operator
          aggregations:
                expr: count(DISTINCT KEY._col1)
                expr: sum(VALUE._col1)
          keys:
                expr: KEY._col0
                type: string
          mode: partials
          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:
        file:/data/users/athusoo/commits/hive_trunk_ws1/build/ql/tmp/1895770841/10002 
            Reduce Output Operator
              key expressions:
                    expr: _col0
                    type: string
              sort order: +
              Map-reduce partition columns:
                    expr: _col0
                    type: string
              tag: -1
              value expressions:
                    expr: _col1
                    type: bigint
                    expr: _col2
                    type: double
      Reduce Operator Tree:
        Group By Operator
          aggregations:
                expr: count(VALUE._col0)
                expr: sum(VALUE._col1)
          keys:
                expr: KEY._col0
                type: string
          mode: final
          outputColumnNames: _col0, _col1, _col2
          Select Operator
            expressions:
                  expr: _col0
                  type: string
                  expr: _col1
                  type: bigint
                  expr: concat(_col0, UDFToString(_col2))
                  type: string
            outputColumnNames: _col0, _col1, _col2
            Select Operator
              expressions:
                    expr: _col0
                    type: string
                    expr: UDFToInteger(_col1)
                    type: int
                    expr: _col2
                    type: string
              outputColumnNames: _col0, _col1, _col2
              File Output Operator
                compressed: false
                GlobalTableId: 1
                table:
                    input format: org.apache.hadoop.mapred.TextInputFormat
                    output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
                    serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
                    name: dest1

  Stage: Stage-0
    Move Operator
      tables:
          replace: true
          table:
              input format: org.apache.hadoop.mapred.TextInputFormat
              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
              name: dest1


query: FROM src
INSERT OVERWRITE TABLE dest1 SELECT substr(src.key,1,1), count(DISTINCT substr(src.value,5)), concat(substr(src.key,1,1),sum(substr(src.value,5))) GROUP BY substr(src.key,1,1)
Input: default/src
Output: default/dest1
query: SELECT dest1.* FROM dest1
Input: default/dest1
Output: file:/data/users/athusoo/commits/hive_trunk_ws1/build/ql/tmp/668586222/10000
0	1	00.0
1	71	116414.0
2	69	225571.0
3	62	332004.0
4	74	452763.0
5	6	5397.0
6	5	6398.0
7	6	7735.0
8	8	8762.0
9	7	91047.0