PREHOOK: query: DESCRIBE FUNCTION isnull
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION isnull
POSTHOOK: type: DESCFUNCTION
isnull a - Returns true if a is NULL and false otherwise
PREHOOK: query: DESCRIBE FUNCTION EXTENDED isnull
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION EXTENDED isnull
POSTHOOK: type: DESCFUNCTION
isnull a - Returns true if a is NULL and false otherwise
PREHOOK: query: DESCRIBE FUNCTION isnotnull
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION isnotnull
POSTHOOK: type: DESCFUNCTION
isnotnull a - Returns true if a is not NULL and false otherwise
PREHOOK: query: DESCRIBE FUNCTION EXTENDED isnotnull
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION EXTENDED isnotnull
POSTHOOK: type: DESCFUNCTION
isnotnull a - Returns true if a is not NULL and false otherwise
PREHOOK: query: EXPLAIN
SELECT NULL IS NULL,
       1 IS NOT NULL, 
       'my string' IS NOT NULL
FROM src
WHERE true IS NOT NULL LIMIT 1
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN
SELECT NULL IS NULL,
       1 IS NOT NULL, 
       'my string' IS NOT NULL
FROM src
WHERE true IS NOT NULL LIMIT 1
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-0
    Fetch Operator
      limit: 1
      Processor Tree:
        TableScan
          alias: src
          Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: COMPLETE
          Select Operator
            expressions: null is null (type: boolean), true (type: boolean), true (type: boolean)
            outputColumnNames: _col0, _col1, _col2
            Statistics: Num rows: 500 Data size: 6000 Basic stats: COMPLETE Column stats: COMPLETE
            Limit
              Number of rows: 1
              Statistics: Num rows: 1 Data size: 12 Basic stats: COMPLETE Column stats: COMPLETE
              ListSink

PREHOOK: query: SELECT NULL IS NULL,
       1 IS NOT NULL, 
       'my string' IS NOT NULL
FROM src
WHERE true IS NOT NULL LIMIT 1
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: SELECT NULL IS NULL,
       1 IS NOT NULL, 
       'my string' IS NOT NULL
FROM src
WHERE true IS NOT NULL LIMIT 1
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
true	true	true
PREHOOK: query: EXPLAIN
FROM src_thrift
SELECT src_thrift.lint IS NOT NULL, 
       src_thrift.lintstring IS NOT NULL, 
       src_thrift.mstringstring IS NOT NULL
WHERE  src_thrift.lint IS NOT NULL 
       AND NOT (src_thrift.mstringstring IS NULL) LIMIT 1
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN
FROM src_thrift
SELECT src_thrift.lint IS NOT NULL, 
       src_thrift.lintstring IS NOT NULL, 
       src_thrift.mstringstring IS NOT NULL
WHERE  src_thrift.lint IS NOT NULL 
       AND NOT (src_thrift.mstringstring IS NULL) LIMIT 1
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-0
    Fetch Operator
      limit: 1
      Processor Tree:
        TableScan
          alias: src_thrift
          Statistics: Num rows: 11 Data size: 3070 Basic stats: COMPLETE Column stats: NONE
          Filter Operator
            predicate: (lint is not null and (not mstringstring is null)) (type: boolean)
            Statistics: Num rows: 3 Data size: 837 Basic stats: COMPLETE Column stats: NONE
            Select Operator
              expressions: lint is not null (type: boolean), lintstring is not null (type: boolean), mstringstring is not null (type: boolean)
              outputColumnNames: _col0, _col1, _col2
              Statistics: Num rows: 3 Data size: 837 Basic stats: COMPLETE Column stats: NONE
              Limit
                Number of rows: 1
                Statistics: Num rows: 1 Data size: 279 Basic stats: COMPLETE Column stats: NONE
                ListSink

PREHOOK: query: FROM src_thrift
SELECT src_thrift.lint IS NOT NULL, 
       src_thrift.lintstring IS NOT NULL, 
       src_thrift.mstringstring IS NOT NULL
WHERE  src_thrift.lint IS NOT NULL 
       AND NOT (src_thrift.mstringstring IS NULL) LIMIT 1
PREHOOK: type: QUERY
PREHOOK: Input: default@src_thrift
#### A masked pattern was here ####
POSTHOOK: query: FROM src_thrift
SELECT src_thrift.lint IS NOT NULL, 
       src_thrift.lintstring IS NOT NULL, 
       src_thrift.mstringstring IS NOT NULL
WHERE  src_thrift.lint IS NOT NULL 
       AND NOT (src_thrift.mstringstring IS NULL) LIMIT 1
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src_thrift
#### A masked pattern was here ####
true	true	true