PREHOOK: query: DESCRIBE FUNCTION current_database
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION current_database
POSTHOOK: type: DESCFUNCTION
current_database() - returns currently using database name
PREHOOK: query: explain
select current_database()
PREHOOK: type: QUERY
POSTHOOK: query: explain
select current_database()
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        TableScan
          alias: _dummy_table
          Row Limit Per Split: 1
          Statistics: Num rows: 0 Data size: 1 Basic stats: PARTIAL Column stats: COMPLETE
          Select Operator
            expressions: 'default' (type: string)
            outputColumnNames: _col0
            Statistics: Num rows: 0 Data size: 1 Basic stats: PARTIAL Column stats: COMPLETE
            ListSink

PREHOOK: query: select current_database()
PREHOOK: type: QUERY
PREHOOK: Input: _dummy_database@_dummy_table
#### A masked pattern was here ####
POSTHOOK: query: select current_database()
POSTHOOK: type: QUERY
POSTHOOK: Input: _dummy_database@_dummy_table
#### A masked pattern was here ####
default
PREHOOK: query: create database xxx
PREHOOK: type: CREATEDATABASE
PREHOOK: Output: database:xxx
POSTHOOK: query: create database xxx
POSTHOOK: type: CREATEDATABASE
POSTHOOK: Output: database:xxx
PREHOOK: query: use xxx
PREHOOK: type: SWITCHDATABASE
PREHOOK: Input: database:xxx
POSTHOOK: query: use xxx
POSTHOOK: type: SWITCHDATABASE
POSTHOOK: Input: database:xxx
PREHOOK: query: explain
select current_database()
PREHOOK: type: QUERY
POSTHOOK: query: explain
select current_database()
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        TableScan
          alias: _dummy_table
          Row Limit Per Split: 1
          Statistics: Num rows: 0 Data size: 1 Basic stats: PARTIAL Column stats: COMPLETE
          Select Operator
            expressions: 'xxx' (type: string)
            outputColumnNames: _col0
            Statistics: Num rows: 0 Data size: 1 Basic stats: PARTIAL Column stats: COMPLETE
            ListSink

PREHOOK: query: select current_database()
PREHOOK: type: QUERY
PREHOOK: Input: _dummy_database@_dummy_table
#### A masked pattern was here ####
POSTHOOK: query: select current_database()
POSTHOOK: type: QUERY
POSTHOOK: Input: _dummy_database@_dummy_table
#### A masked pattern was here ####
xxx
PREHOOK: query: use default
PREHOOK: type: SWITCHDATABASE
PREHOOK: Input: database:default
POSTHOOK: query: use default
POSTHOOK: type: SWITCHDATABASE
POSTHOOK: Input: database:default
PREHOOK: query: explain
select current_database()
PREHOOK: type: QUERY
POSTHOOK: query: explain
select current_database()
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        TableScan
          alias: _dummy_table
          Row Limit Per Split: 1
          Statistics: Num rows: 0 Data size: 1 Basic stats: PARTIAL Column stats: COMPLETE
          Select Operator
            expressions: 'default' (type: string)
            outputColumnNames: _col0
            Statistics: Num rows: 0 Data size: 1 Basic stats: PARTIAL Column stats: COMPLETE
            ListSink

PREHOOK: query: select current_database()
PREHOOK: type: QUERY
PREHOOK: Input: _dummy_database@_dummy_table
#### A masked pattern was here ####
POSTHOOK: query: select current_database()
POSTHOOK: type: QUERY
POSTHOOK: Input: _dummy_database@_dummy_table
#### A masked pattern was here ####
default
PREHOOK: query: use xxx
PREHOOK: type: SWITCHDATABASE
PREHOOK: Input: database:xxx
POSTHOOK: query: use xxx
POSTHOOK: type: SWITCHDATABASE
POSTHOOK: Input: database:xxx
PREHOOK: query: explain
select current_database()
PREHOOK: type: QUERY
POSTHOOK: query: explain
select current_database()
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        TableScan
          alias: _dummy_table
          Row Limit Per Split: 1
          Statistics: Num rows: 0 Data size: 1 Basic stats: PARTIAL Column stats: COMPLETE
          Select Operator
            expressions: 'xxx' (type: string)
            outputColumnNames: _col0
            Statistics: Num rows: 0 Data size: 1 Basic stats: PARTIAL Column stats: COMPLETE
            ListSink

PREHOOK: query: select current_database()
PREHOOK: type: QUERY
PREHOOK: Input: _dummy_database@_dummy_table
#### A masked pattern was here ####
POSTHOOK: query: select current_database()
POSTHOOK: type: QUERY
POSTHOOK: Input: _dummy_database@_dummy_table
#### A masked pattern was here ####
xxx