Fair enough -- thanks for the tip. On Thu, May 24, 2012 at 11:21 AM, Tom Lane <t...@sss.pgh.pa.us> wrote: > Ian Pye <ian...@gmail.com> writes: >> I'm writing a set-returning function which places a file handle into >> PG's FuncCallContext's user_fctx space. My problem is that when the >> function is ran with a limit clause (SELECT * FROM foo() LIMIT 10) the >> server will stop calling the function automatically, not giving me a >> chance to close the file handle. Is there a way to get the limit value >> inside of foo() and set the max max_calls parameter correctly? > > No, and even if there were, this would be a very unsafe practice, > since errors or other issues could result in early termination of the > query. > > You would likely be better off using tuplestore return mode so that you > can do all the reading during one call and not have to assume that > you'll get control back again. > > regards, tom lane
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