DatesADDdatepart
DatesADDdatepart is a date arithmetic function used to add or subtract a specified date part to a given date value. It is found in various data processing and database contexts and is conceptually similar to other date-add functions such as DATEADD in SQL. The function typically accepts three arguments: a date_expression, a datepart, and an amount. The date_expression is the starting date or timestamp; the datepart indicates which component to modify (for example year, quarter, month, day, hour, minute, or second); the amount is an integer that can be positive or negative to indicate addition or subtraction.
Syntax: DatesADDdatepart(date_expression, datepart, amount)
Behavior: The function computes a new date by adding the specified amount of the given datepart. For
Return value: The same type as input if the operation succeeds; otherwise an appropriate error or null
Examples: DatesADDdatepart('2020-01-31', 'month', 1) yields '2020-02-29'; DatesADDdatepart('2020-03-15', 'year', -1) yields '2019-03-15'.
Notes: The exact syntax and supported dateparts vary by language or platform; in SQL-like contexts, a similar