Re: calling a function that takes a row type and returns a set of rows - Mailing list pgsql-general

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Hi,

Le 10 oct. 08 à 21:22, Robert Haas a écrit :
> I can't find any legal way of calling this function.
>
> SELECT bar(f) FROM foo f;
> ERROR:  set-valued function called in context that cannot accept a set
>
> SELECT * FROM foo f, bar(f);
> ERROR:  function expression in FROM may not refer to other relations
> of same query level
>
> Any help appreciated.


You need LATERAL support for this:
   SELECT * FROM foo f LATERAL bar(f);

I'm not sure about the syntax, but LATERAL is a standard JOIN type
wherein upper "nodes" are visible.
- --
dim

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