Uh, I think that you would be surprised what PostgreSQL will let you
do without special functions.
For example:
SELECT '2001-01-01'::timestamp + '1 year'::interval;
?column?
------------------------
2002-01-01 00:00:00-07
You don't even need the explicit casts if the database knows the type
already. Subtracting timestamps gets you an interval, and intervals
and timestamps can be added (or subtracted) to get a timestamp result.
Jason
Burra <burra@colorado.edu> writes:
> Does postgres have functions that are similar to these mysql functions?
>
> DATE_ADD(date,INTERVAL expr type)
> DATE_SUB(date,INTERVAL expr type)
> ADDDATE(date,INTERVAL expr type)
> SUBDATE(date,INTERVAL expr type)
>
> --------------------[-- burra@colorado.edu --]--------------------------
>
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