This function subtracts b years from the given date a. If b is negative the number of years are added.
Parameters
Parameter | Description |
|---|---|
a | Date. |
b | Years to subtract. |
Examples
Parameter a | Parameter b | Result |
|---|---|---|
2005-01-01 | 1 | 2004-01-01 |
2005-01-01 | -1 | 2006-01-01 |