PREHOOK: query: DESCRIBE FUNCTION count
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION count
POSTHOOK: type: DESCFUNCTION
count(*) - Returns the total number of retrieved rows, including rows containing NULL values.
count(expr) - Returns the number of rows for which the supplied expression is non-NULL.
count(DISTINCT expr[, expr...]) - Returns the number of rows for which the supplied expression(s) are unique and non-NULL.
PREHOOK: query: DESCRIBE FUNCTION EXTENDED count
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION EXTENDED count
POSTHOOK: type: DESCFUNCTION
count(*) - Returns the total number of retrieved rows, including rows containing NULL values.
count(expr) - Returns the number of rows for which the supplied expression is non-NULL.
count(DISTINCT expr[, expr...]) - Returns the number of rows for which the supplied expression(s) are unique and non-NULL.
PREHOOK: query: EXPLAIN SELECT count(key) FROM src
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN SELECT count(key) FROM src
POSTHOOK: type: QUERY
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME src))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION count (TOK_TABLE_OR_COL key))))))

STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Alias -> Map Operator Tree:
        src 
          TableScan
            alias: src
            Select Operator
              expressions:
                    expr: key
                    type: string
              outputColumnNames: key
              Group By Operator
                aggregations:
                      expr: count(key)
                bucketGroup: false
                mode: hash
                outputColumnNames: _col0
                Reduce Output Operator
                  sort order: 
                  tag: -1
                  value expressions:
                        expr: _col0
                        type: bigint
      Reduce Operator Tree:
        Group By Operator
          aggregations:
                expr: count(VALUE._col0)
          bucketGroup: false
          mode: mergepartial
          outputColumnNames: _col0
          Select Operator
            expressions:
                  expr: _col0
                  type: bigint
            outputColumnNames: _col0
            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 count(key) FROM src
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-32-33_387_2210016768638890442/-mr-10000
POSTHOOK: query: SELECT count(key) FROM src
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-32-33_387_2210016768638890442/-mr-10000
500
PREHOOK: query: EXPLAIN SELECT count(DISTINCT key) FROM src
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN SELECT count(DISTINCT key) FROM src
POSTHOOK: type: QUERY
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME src))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTIONDI count (TOK_TABLE_OR_COL key))))))

STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Alias -> Map Operator Tree:
        src 
          TableScan
            alias: src
            Select Operator
              expressions:
                    expr: key
                    type: string
              outputColumnNames: key
              Group By Operator
                aggregations:
                      expr: count(DISTINCT key)
                bucketGroup: false
                keys:
                      expr: key
                      type: string
                mode: hash
                outputColumnNames: _col0, _col1
                Reduce Output Operator
                  key expressions:
                        expr: _col0
                        type: string
                  sort order: +
                  tag: -1
                  value expressions:
                        expr: _col1
                        type: bigint
      Reduce Operator Tree:
        Group By Operator
          aggregations:
                expr: count(DISTINCT KEY._col0:0._col0)
          bucketGroup: false
          mode: mergepartial
          outputColumnNames: _col0
          Select Operator
            expressions:
                  expr: _col0
                  type: bigint
            outputColumnNames: _col0
            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 count(DISTINCT key) FROM src
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-32-36_903_4900424623031909011/-mr-10000
POSTHOOK: query: SELECT count(DISTINCT key) FROM src
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-32-36_903_4900424623031909011/-mr-10000
309
PREHOOK: query: EXPLAIN SELECT count(DISTINCT key, value) FROM src
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN SELECT count(DISTINCT key, value) FROM src
POSTHOOK: type: QUERY
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME src))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTIONDI count (TOK_TABLE_OR_COL key) (TOK_TABLE_OR_COL value))))))

STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 is a root stage

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 key, value)
                bucketGroup: false
                keys:
                      expr: key
                      type: string
                      expr: value
                      type: string
                mode: hash
                outputColumnNames: _col0, _col1, _col2
                Reduce Output Operator
                  key expressions:
                        expr: _col0
                        type: string
                        expr: _col1
                        type: string
                  sort order: ++
                  tag: -1
                  value expressions:
                        expr: _col2
                        type: bigint
      Reduce Operator Tree:
        Group By Operator
          aggregations:
                expr: count(DISTINCT KEY._col0:0._col0, KEY._col0:0._col1)
          bucketGroup: false
          mode: mergepartial
          outputColumnNames: _col0
          Select Operator
            expressions:
                  expr: _col0
                  type: bigint
            outputColumnNames: _col0
            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 count(DISTINCT key, value) FROM src
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-32-40_320_7589391114592755640/-mr-10000
POSTHOOK: query: SELECT count(DISTINCT key, value) FROM src
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-32-40_320_7589391114592755640/-mr-10000
309
PREHOOK: query: EXPLAIN SELECT count(*) FROM src
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN SELECT count(*) FROM src
POSTHOOK: type: QUERY
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME src))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTIONSTAR count)))))

STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Alias -> Map Operator Tree:
        src 
          TableScan
            alias: src
            Select Operator
              Group By Operator
                aggregations:
                      expr: count()
                bucketGroup: false
                mode: hash
                outputColumnNames: _col0
                Reduce Output Operator
                  sort order: 
                  tag: -1
                  value expressions:
                        expr: _col0
                        type: bigint
      Reduce Operator Tree:
        Group By Operator
          aggregations:
                expr: count(VALUE._col0)
          bucketGroup: false
          mode: mergepartial
          outputColumnNames: _col0
          Select Operator
            expressions:
                  expr: _col0
                  type: bigint
            outputColumnNames: _col0
            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 count(*) FROM src
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-32-43_751_8070894092190222667/-mr-10000
POSTHOOK: query: SELECT count(*) FROM src
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-32-43_751_8070894092190222667/-mr-10000
500
PREHOOK: query: EXPLAIN SELECT count(1) FROM src
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN SELECT count(1) FROM src
POSTHOOK: type: QUERY
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME src))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION count 1)))))

STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Alias -> Map Operator Tree:
        src 
          TableScan
            alias: src
            Select Operator
              Group By Operator
                aggregations:
                      expr: count(1)
                bucketGroup: false
                mode: hash
                outputColumnNames: _col0
                Reduce Output Operator
                  sort order: 
                  tag: -1
                  value expressions:
                        expr: _col0
                        type: bigint
      Reduce Operator Tree:
        Group By Operator
          aggregations:
                expr: count(VALUE._col0)
          bucketGroup: false
          mode: mergepartial
          outputColumnNames: _col0
          Select Operator
            expressions:
                  expr: _col0
                  type: bigint
            outputColumnNames: _col0
            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 count(1) FROM src
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-32-47_181_575076640530335724/-mr-10000
POSTHOOK: query: SELECT count(1) FROM src
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-32-47_181_575076640530335724/-mr-10000
500
PREHOOK: query: select count(1) from src where false
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-32-50_564_3434263079981833640/-mr-10000
POSTHOOK: query: select count(1) from src where false
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-32-50_564_3434263079981833640/-mr-10000
0
PREHOOK: query: select count(*) from src where false
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-32-53_964_8582140156519159478/-mr-10000
POSTHOOK: query: select count(*) from src where false
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-32-53_964_8582140156519159478/-mr-10000
0