addDateTime
addDateTime adds or subtracts a unit of time from a datetime value.
				For example, addDateTime(2,'YYYY',parseDate('02-JUL-2018', 'dd-MMM-yyyy')
					) returns 02-JUL-2020. You can use this function to perform
				date math on your date and time data. 
Syntax
addDateTime(amount,period,datetime)
Arguments
- amount
- 
							A positive or negative integer value that represents the amount of time that you want to add or subtract from the provided datetime field. 
- period
- 
							A positive or negative value that represents the amount of time that you want to add or subtract from the provided datetime field. Valid periods are as follows: - 
									YYYY: This returns the year portion of the date. 
- 
									Q: This returns the quarter that the date belongs to (1–4). 
- 
									MM: This returns the month portion of the date. 
- 
									DD: This returns the day portion of the date. 
- 
									WK: This returns the week portion of the date. The week starts on Sunday in Amazon Quick Suite. 
- 
									HH: This returns the hour portion of the date. 
- 
									MI: This returns the minute portion of the date. 
- 
									SS: This returns the second portion of the date. 
- 
									MS: This returns the millisecond portion of the date. 
 
- 
									
- datetime
- 
							The date or time that you want to perform date math on. 
Return type
Datetime
Example
Let's say you have a field called purchase_date that has the
					following values.
2018 May 13 13:24 2017 Jan 31 23:06 2016 Dec 28 06:45
Using the following calculations, addDateTime modifies the values
					as shown following.
addDateTime(-2, 'YYYY', purchaseDate) 2016 May 13 13:24 2015 Jan 31 23:06 2014 Dec 28 06:45 addDateTime(4, 'DD', purchaseDate) 2018 May 17 13:24 2017 Feb 4 23:06 2017 Jan 1 06:45 addDateTime(20, 'MI', purchaseDate) 2018 May 13 13:44 2017 Jan 31 23:26 2016 Dec 28 07:05