PREHOOK: query: DESCRIBE FUNCTION to_date
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION to_date
POSTHOOK: type: DESCFUNCTION
to_date(expr) - Extracts the date part of the date or datetime expression expr
PREHOOK: query: DESCRIBE FUNCTION EXTENDED to_date
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION EXTENDED to_date
POSTHOOK: type: DESCFUNCTION
to_date(expr) - Extracts the date part of the date or datetime expression expr
Example:
   > SELECT to_date('2009-30-07 04:17:52') FROM src LIMIT 1;
  '2009-30-07'