Sophie: postgresql8.3-docs-8.3.6-2mdv2008.1 x86

postgresql8.3-docs-8.3.6-2mdv2008.1.x86_64.rpm

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>40.7. Limitations and Missing Features</A
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>   The following features are currently missing from PL/Perl, but they
   would make welcome contributions.

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>      PL/Perl functions cannot call each other directly (because they
      are anonymous subroutines inside Perl).
     </P
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>      SPI is not yet fully implemented.
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>      If you are fetching very large data sets using
      <TT
CLASS="LITERAL"
>spi_exec_query</TT
>, you should be aware that
      these will all go into memory.  You can avoid this by using
      <TT
CLASS="LITERAL"
>spi_query</TT
>/<TT
CLASS="LITERAL"
>spi_fetchrow</TT
> as
      illustrated earlier.
     </P
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>        A similar problem occurs if a set-returning function passes a
        large set of rows back to PostgreSQL via <TT
CLASS="LITERAL"
>return</TT
>. You
        can avoid this problem too by instead using
        <TT
CLASS="LITERAL"
>return_next</TT
> for each row returned, as shown
        previously.
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