SQL Eval Function DateTime_AddDays
DateTime_AddDays returns a new DateTime that adds the specified number of days to the value of currDate.
DateTime_AddDays (
	@currDate DATETIME, 
	@value FLOAT (53))
	)
RETURNS DATETIME
Parameters
- currDate: The current datetime object.
 - value: A number of whole and fractional days. The 
valueparameter can be negative or positive. 
Returns
A new DateTime object whose value is the sum of the date and time represented by currDate and the number of days represented by value.
Example
SELECT SQLNET::DateTime_AddDays('2017-05-25', 4) SELECT SQLNET::DateTime_AddDays('2018-12-01', 2.2)