PREHOOK: query: DESCRIBE FUNCTION elt
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION elt
POSTHOOK: type: DESCFUNCTION
elt(n, str1, str2, ...) - returns the n-th string
PREHOOK: query: DESCRIBE FUNCTION EXTENDED elt
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION EXTENDED elt
POSTHOOK: type: DESCFUNCTION
elt(n, str1, str2, ...) - returns the n-th string
Example:
  > SELECT elt(1, 'face', 'book') FROM src LIMIT 1;
  'face'
PREHOOK: query: EXPLAIN
SELECT elt(2, 'abc', 'defg'),
       elt(3, 'aa', 'bb', 'cc', 'dd', 'ee', 'ff', 'gg'),
       elt('1', 'abc', 'defg'),
       elt(2, 'aa', CAST('2' AS TINYINT)),
       elt(2, 'aa', CAST('12345' AS SMALLINT)),
       elt(2, 'aa', CAST('123456789012' AS BIGINT)),
       elt(2, 'aa', CAST(1.25 AS FLOAT)),
       elt(2, 'aa', CAST(16.0 AS DOUBLE)),
       elt(null, 'abc', 'defg'),
       elt(0, 'abc', 'defg'),
       elt(3, 'abc', 'defg')
FROM src tablesample (1 rows)
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN
SELECT elt(2, 'abc', 'defg'),
       elt(3, 'aa', 'bb', 'cc', 'dd', 'ee', 'ff', 'gg'),
       elt('1', 'abc', 'defg'),
       elt(2, 'aa', CAST('2' AS TINYINT)),
       elt(2, 'aa', CAST('12345' AS SMALLINT)),
       elt(2, 'aa', CAST('123456789012' AS BIGINT)),
       elt(2, 'aa', CAST(1.25 AS FLOAT)),
       elt(2, 'aa', CAST(16.0 AS DOUBLE)),
       elt(null, 'abc', 'defg'),
       elt(0, 'abc', 'defg'),
       elt(3, 'abc', 'defg')
FROM src tablesample (1 rows)
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
          Row Limit Per Split: 1
          Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: COMPLETE
          Select Operator
            expressions: 'defg' (type: string), 'cc' (type: string), 'abc' (type: string), '2' (type: string), '12345' (type: string), '123456789012' (type: string), '1.25' (type: string), '16.0' (type: string), elt(null, 'abc', 'defg') (type: string), null (type: void), null (type: void)
            outputColumnNames: _col0, _col1, _col2, _col3, _col4, _col5, _col6, _col7, _col8, _col9, _col10
            Statistics: Num rows: 500 Data size: 395500 Basic stats: COMPLETE Column stats: COMPLETE
            ListSink

PREHOOK: query: SELECT elt(2, 'abc', 'defg'),
       elt(3, 'aa', 'bb', 'cc', 'dd', 'ee', 'ff', 'gg'),
       elt('1', 'abc', 'defg'),
       elt(2, 'aa', CAST('2' AS TINYINT)),
       elt(2, 'aa', CAST('12345' AS SMALLINT)),
       elt(2, 'aa', CAST('123456789012' AS BIGINT)),
       elt(2, 'aa', CAST(1.25 AS FLOAT)),
       elt(2, 'aa', CAST(16.0 AS DOUBLE)),
       elt(null, 'abc', 'defg'),
       elt(0, 'abc', 'defg'),
       elt(3, 'abc', 'defg')
FROM src tablesample (1 rows)
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: SELECT elt(2, 'abc', 'defg'),
       elt(3, 'aa', 'bb', 'cc', 'dd', 'ee', 'ff', 'gg'),
       elt('1', 'abc', 'defg'),
       elt(2, 'aa', CAST('2' AS TINYINT)),
       elt(2, 'aa', CAST('12345' AS SMALLINT)),
       elt(2, 'aa', CAST('123456789012' AS BIGINT)),
       elt(2, 'aa', CAST(1.25 AS FLOAT)),
       elt(2, 'aa', CAST(16.0 AS DOUBLE)),
       elt(null, 'abc', 'defg'),
       elt(0, 'abc', 'defg'),
       elt(3, 'abc', 'defg')
FROM src tablesample (1 rows)
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
defg	cc	abc	2	12345	123456789012	1.25	16.0	NULL	NULL	NULL