DAYS
Returns the integer value of the specified date, where 1 AD is 1.
	Returns the integer value of the specified date, where 1 AD is 1. If the date precedes 1 AD, DAYS returns a negative integer.
Behavior type
- 
Immutable if thespecified date is a TIMESTAMP,DATE, orVARCHAR
- 
Stable if the specified date is a TIMESTAMPTZ
Syntax
DAYS ( date )
Parameters
- date
- The date to process, one of the following data types: 
Examples
=> SELECT DAYS (DATE '2011-01-22');
  DAYS
--------
 734159
(1 row)
=> SELECT DAYS (DATE 'March 15, 0044 BC');
  DAYS
--------
 -15997
(1 row)