Re: How do I use the backend APIs

Chad wrote:
> Thanks Martijn,

> "Well, in the backend you can do things like open a btree index, setup
> an ScanKey to indicate which values you want and then keep calling
> getnext(). If you set your scankey to (col1 >= 'A') it will start at
> 'A' and go up from there... "

That looks suspiciously much like cursors. Isn't this what you're
looking for?:

OPEN curs1 FOR SELECT * FROM foo WHERE key = mykey;
FETCH cursor INTO target;
CLOSE cursor;

(from:
http://www.postgresql.org/docs/8.1/static/plpgsql-cursors.html#PLPGSQL-CURSOR-DECLARATIONS
)

I figure the other PL/ languages feature cursors as well, but I've never
used those.

--
Alban Hertroys
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magproductions b.v.

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