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Update FAQ.

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Bruce Momjian 2002-04-09 03:22:11 +00:00
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doc/FAQ
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Frequently Asked Questions (FAQ) for PostgreSQL
Last updated: Mon Mar 18 14:34:57 EST 2002
Last updated: Mon Apr 8 23:22:06 EDT 2002
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
@ -91,6 +91,7 @@
4.22) Why are my subqueries using IN so slow?
4.23) How do I perform an outer join?
4.24) How do I perform queries using multiple databases?
4.25) How do I return multiple rows or columns from a function?
Extending PostgreSQL
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databases and merge the information that way.
_________________________________________________________________
4.25) How do I return multiple rows or columns from a function?
You can return result sets from PL/pgSQL functions using refcursors.
See
http://candle.pha.pa.us/main/writings/pgsql/sgml/plpgsql-cursors.html,
section 23.7.3.3.
Extending PostgreSQL
5.1) I wrote a user-defined function. When I run it in psql, why does it

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doc/src/FAQ/FAQ.html
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alink="#0000ff">
<H1>Frequently Asked Questions (FAQ) for PostgreSQL</H1>
<P>Last updated: Mon Mar 18 14:34:57 EST 2002</P>
<P>Last updated: Mon Apr 8 23:22:06 EDT 2002</P>
<P>Current maintainer: Bruce Momjian (<A href=
"mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</A>)<BR>
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<A href="#4.23">4.23</A>) How do I perform an outer join?<BR>
<A href="#4.24">4.24</A>) How do I perform queries using multiple
databases?<BR>
<A href="#4.25">4.25</A>) How do I return multiple rows or columns
from a function?<BR>
<H2 align="center">Extending PostgreSQL</H2>
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different databases and merge the information that way.</P>
<HR>
<H4><A name="4.25">4.25</A>) How do I return multiple rows or columns
from a function?</H4>
<P>You can return result sets from PL/pgSQL functions using
<i>refcursors</i>. See <a
href="http://candle.pha.pa.us/main/writings/pgsql/sgml/plpgsql-cursors.html">
http://candle.pha.pa.us/main/writings/pgsql/sgml/plpgsql-cursors.html,</a>
section 23.7.3.3.</P>
<H2 align="center">Extending PostgreSQL</H2>
<H4><A name="5.1">5.1</A>) I wrote a user-defined function. When I