Saving all output to "!!{outputDirectory}!!/udf_negative.q.raw". Enter "record" with no arguments to stop it.
>>>  !run !!{qFileDirectory}!!/udf_negative.q
>>>  DESCRIBE FUNCTION negative;
'tab_name'
'negative a - Returns -a'
1 row selected 
>>>  DESCRIBE FUNCTION EXTENDED negative;
'tab_name'
'negative a - Returns -a'
1 row selected 
>>>  
>>>  -- synonym
>>>  DESCRIBE FUNCTION -;
'tab_name'
'a - b - Returns the difference a-b'
1 row selected 
>>>  DESCRIBE FUNCTION EXTENDED -;
'tab_name'
'a - b - Returns the difference a-b'
1 row selected 
>>>  
>>>  select - null from src limit 1;
'_c0'
''
1 row selected 
>>>  select - cast(null as int) from src limit 1;
'_c0'
''
1 row selected 
>>>  select - cast(null as smallint) from src limit 1;
'_c0'
''
1 row selected 
>>>  select - cast(null as bigint) from src limit 1;
'_c0'
''
1 row selected 
>>>  select - cast(null as double) from src limit 1;
'_c0'
''
1 row selected 
>>>  select - cast(null as float) from src limit 1;
'_c0'
''
1 row selected 
>>>  !record