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Update FAQ.
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doc/src/FAQ/FAQ.html

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alink="#0000FF">
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<H1>Frequently Asked Questions (FAQ) for PostgreSQL</H1>
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<P>Last updated: Tue Sep 4 01:06:12 EDT 2001</P>
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<P>Last updated: Tue Sep 4 01:14:28 EDT 2001</P>
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<P>Current maintainer: Bruce Momjian (<A href=
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"mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</A>)<BR>
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WHERE tab1.col1 NOT IN (SELECT tab2.col1 FROM tab2)
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ORDER BY col1
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</PRE>
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<HR>
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<H4><A href="#4.25">4.25</A>) How do I perform queries
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using multiple databases?<H4>
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using multiple databases?<H4>
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<P>There is no way to query any database except the current one.
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Because PostgreSQL loads database-specific system catalogs, it is
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uncertain how a cross-database query should even behave.</P>
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<P>Of course, a client can make simultaneous connections to
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different databases and merge the information that way.</P>
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<HR>
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<P>
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<CENTER>
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<H2>Extending PostgreSQL</H2>
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</CENTER>

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