Re: Reading from a REFCURSOR in a C language function - Mailing list pgsql-hackers

On 4/5/2011 3:24 AM, Vlad Arkhipov wrote:
> Hi,
>
> I'm trying to write a C language function that has a REFCURSOR argument.
> Could anyone please give me an example of reading from a cursor in C code?
>

Sorry, I don't have a code example.

A refcursor data type is basically a string, containing the name of an 
open cursor (portal). It is stored binary compatible to the text data 
type. In the C function, you extract that name (using the textout 
function) and use it inside the FETCH query as the cursor name. You may 
need to double-quote that string.


Jan

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