Re: adding years to a date field

On 04/06/2011 08:54 AM, Christine Penner wrote:
> I have to add a number of years to a date field. The years come from
> another field in the table.
>
> I know I can do this:
> select (ii_purchased + interval '3 year') as date from inventory_item;
>
> But I need to replace the 3 in 3 years with another field from the
> same table ii_expected_life but I can't seem to do that without
> getting syntax errors
> --
> Christine Penner
> Ingenious Software
> 250-352-9495
> chris(at)fp2(dot)ca
Assuming that the field is an int, multiply the value in your years
column by a 1-year interval:

select ii_purchased + your_interval_field * '1 year'::date as date from
inventory_item;

Cheers,
Steve