PREHOOK: query: DESCRIBE FUNCTION isnotnull
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION isnotnull
POSTHOOK: type: DESCFUNCTION
isnotnull a - Returns true if a is not NULL and false otherwise
PREHOOK: query: DESCRIBE FUNCTION EXTENDED isnotnull
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION EXTENDED isnotnull
POSTHOOK: type: DESCFUNCTION
isnotnull a - Returns true if a is not NULL and false otherwise