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

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: src
            Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
            Select Operator
              expressions: key (type: string)
              outputColumnNames: _col0
              Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
              Group By Operator
                aggregations: count(_col0)
                mode: hash
                outputColumnNames: _col0
                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                Reduce Output Operator
                  sort order: 
                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                  value expressions: _col0 (type: bigint)
      Reduce Operator Tree:
        Group By Operator
          aggregations: count(VALUE._col0)
          mode: mergepartial
          outputColumnNames: _col0
          Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
          File Output Operator
            compressed: false
            Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
            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

  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: SELECT count(key) FROM src
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: SELECT count(key) FROM src
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
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
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 depends on stages: Stage-1

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: src
            Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
            Select Operator
              expressions: key (type: string)
              outputColumnNames: _col0
              Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
              Group By Operator
                aggregations: count(DISTINCT _col0)
                keys: _col0 (type: string)
                mode: hash
                outputColumnNames: _col0, _col1
                Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
                Reduce Output Operator
                  key expressions: _col0 (type: string)
                  sort order: +
                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
      Reduce Operator Tree:
        Group By Operator
          aggregations: count(DISTINCT KEY._col0:0._col0)
          mode: mergepartial
          outputColumnNames: _col0
          Statistics: Num rows: 1 Data size: 16 Basic stats: COMPLETE Column stats: NONE
          File Output Operator
            compressed: false
            Statistics: Num rows: 1 Data size: 16 Basic stats: COMPLETE Column stats: NONE
            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

  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: SELECT count(DISTINCT key) FROM src
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: SELECT count(DISTINCT key) FROM src
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
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
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 depends on stages: Stage-1

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: src
            Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
            Select Operator
              expressions: key (type: string), value (type: string)
              outputColumnNames: _col0, _col1
              Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
              Group By Operator
                aggregations: count(DISTINCT _col0, _col1)
                keys: _col0 (type: string), _col1 (type: string)
                mode: hash
                outputColumnNames: _col0, _col1, _col2
                Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
                Reduce Output Operator
                  key expressions: _col0 (type: string), _col1 (type: string)
                  sort order: ++
                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
      Reduce Operator Tree:
        Group By Operator
          aggregations: count(DISTINCT KEY._col0:0._col0, KEY._col0:0._col1)
          mode: mergepartial
          outputColumnNames: _col0
          Statistics: Num rows: 1 Data size: 16 Basic stats: COMPLETE Column stats: NONE
          File Output Operator
            compressed: false
            Statistics: Num rows: 1 Data size: 16 Basic stats: COMPLETE Column stats: NONE
            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

  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: SELECT count(DISTINCT key, value) FROM src
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: SELECT count(DISTINCT key, value) FROM src
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
309
PREHOOK: query: EXPLAIN SELECT count(*) FROM src
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN SELECT count(*) FROM src
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 depends on stages: Stage-1

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: src
            Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: COMPLETE
            Select Operator
              Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: COMPLETE
              Group By Operator
                aggregations: count()
                mode: hash
                outputColumnNames: _col0
                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: COMPLETE
                Reduce Output Operator
                  sort order: 
                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: COMPLETE
                  value expressions: _col0 (type: bigint)
      Reduce Operator Tree:
        Group By Operator
          aggregations: count(VALUE._col0)
          mode: mergepartial
          outputColumnNames: _col0
          Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: COMPLETE
          File Output Operator
            compressed: false
            Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: COMPLETE
            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

  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: SELECT count(*) FROM src
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: SELECT count(*) FROM src
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
500
PREHOOK: query: EXPLAIN SELECT count(1) FROM src
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN SELECT count(1) FROM src
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 depends on stages: Stage-1

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: src
            Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: COMPLETE
            Select Operator
              Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: COMPLETE
              Group By Operator
                aggregations: count(1)
                mode: hash
                outputColumnNames: _col0
                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: COMPLETE
                Reduce Output Operator
                  sort order: 
                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: COMPLETE
                  value expressions: _col0 (type: bigint)
      Reduce Operator Tree:
        Group By Operator
          aggregations: count(VALUE._col0)
          mode: mergepartial
          outputColumnNames: _col0
          Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: COMPLETE
          File Output Operator
            compressed: false
            Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: COMPLETE
            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

  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: SELECT count(1) FROM src
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: SELECT count(1) FROM src
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
500
PREHOOK: query: select count(1) from src where false
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: select count(1) from src where false
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
0
PREHOOK: query: select count(*) from src where false
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: select count(*) from src where false
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
0