PREHOOK: query: DESCRIBE FUNCTION factorial
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION factorial
POSTHOOK: type: DESCFUNCTION
factorial(int) - Returns n factorial. Valid n is [0..20].
PREHOOK: query: DESC FUNCTION EXTENDED factorial
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESC FUNCTION EXTENDED factorial
POSTHOOK: type: DESCFUNCTION
factorial(int) - Returns n factorial. Valid n is [0..20].
Returns null if n is out of [0..20] range.
Example:
 > SELECT factorial(5);
 120
PREHOOK: query: explain select factorial(5)
PREHOOK: type: QUERY
POSTHOOK: query: explain select factorial(5)
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: 120 (type: bigint)
            outputColumnNames: _col0
            Statistics: Num rows: 0 Data size: 1 Basic stats: PARTIAL Column stats: COMPLETE
            ListSink

PREHOOK: query: select
factorial(5),
factorial(0),
factorial(20),
factorial(-1),
factorial(21),
factorial(cast(null as int))
PREHOOK: type: QUERY
PREHOOK: Input: _dummy_database@_dummy_table
#### A masked pattern was here ####
POSTHOOK: query: select
factorial(5),
factorial(0),
factorial(20),
factorial(-1),
factorial(21),
factorial(cast(null as int))
POSTHOOK: type: QUERY
POSTHOOK: Input: _dummy_database@_dummy_table
#### A masked pattern was here ####
120	1	2432902008176640000	NULL	NULL	NULL