PREHOOK: query: DESCRIBE FUNCTION create_union
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION create_union
POSTHOOK: type: DESCFUNCTION
create_union(tag, obj1, obj2, obj3, ...) - Creates a union with the object for given tag
PREHOOK: query: DESCRIBE FUNCTION EXTENDED create_union
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION EXTENDED create_union
POSTHOOK: type: DESCFUNCTION
create_union(tag, obj1, obj2, obj3, ...) - Creates a union with the object for given tag
Example:
  > SELECT create_union(1, 1, "one") FROM src LIMIT 1;
  one
PREHOOK: query: EXPLAIN
SELECT create_union(0, key), create_union(if(key<100, 0, 1), 2.0, value),
create_union(1, "a", struct(2, "b"))
FROM src tablesample (2 rows)
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN
SELECT create_union(0, key), create_union(if(key<100, 0, 1), 2.0, value),
create_union(1, "a", struct(2, "b"))
FROM src tablesample (2 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: 2
          Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
          Select Operator
            expressions: create_union(0,key) (type: uniontype<string>), create_union(if((key < 100), 0, 1),2.0,value) (type: uniontype<double,string>), create_union(1,'a',struct(2,'b')) (type: uniontype<string,struct<col1:int,col2:string>>)
            outputColumnNames: _col0, _col1, _col2
            Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
            ListSink

PREHOOK: query: SELECT create_union(0, key), create_union(if(key<100, 0, 1), 2.0, value),
create_union(1, "a", struct(2, "b"))
FROM src tablesample (2 rows)
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: SELECT create_union(0, key), create_union(if(key<100, 0, 1), 2.0, value),
create_union(1, "a", struct(2, "b"))
FROM src tablesample (2 rows)
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
{0:"238"}	{1:"val_238"}	{1:{"col1":2,"col2":"b"}}
{0:"86"}	{0:2.0}	{1:{"col1":2,"col2":"b"}}