Re: [HACKERS] Function-manager redesign: second draft (long)

Bernie Franpitt wrote:

> SELECT * FORM t WHERE t.object <intersects> pts;
>
> Under these circumstances it would be really nice to be able to pass a
> set of objects (as an SPI tuple table for instance) into the index.
>
> Currently, the way I do this (with a custom access method) is to create
> a temp table, put the key set into the temp table, and pass the name of
> the temp table to the access method in the search key.  The access
> method then does an SPI select on the temp table and stores the returned
> items into the private scan state for use during the scan.
>
> While I realize that implementing this example requires much more than a
> change to the function interface, I hope that it illustrates that it is
> perhaps a good idea to keep as much flexibility in the function
> interface as possible.

    Uhhh - it is a good idea, but passing tuple sets as arguments
    to functions, that will cause headaches, man.


Jan

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