PREHOOK: query: DESCRIBE FUNCTION day
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION day
POSTHOOK: type: DESCFUNCTION
day(date) - Returns the date of the month of date
PREHOOK: query: DESCRIBE FUNCTION EXTENDED day
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION EXTENDED day
POSTHOOK: type: DESCFUNCTION
day(date) - Returns the date of the month of date
Synonyms: dayofmonth
date is a string in the format of 'yyyy-MM-dd HH:mm:ss' or 'yyyy-MM-dd'.
Example:
   > SELECT day('2009-30-07', 1) FROM src LIMIT 1;
  30