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Add how to get database/user listing information.

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Bruce Momjian 2002-04-18 04:45:11 +00:00
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doc/FAQ
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Frequently Asked Questions (FAQ) for PostgreSQL
Last updated: Wed Apr 17 22:48:04 EDT 2002
Last updated: Thu Apr 18 00:44:51 EDT 2002
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
@ -63,8 +63,8 @@
4.5) What is the maximum size for a row, a table, and a database?
4.6) How much database disk space is required to store data from a
typical text file?
4.7) How do I find out what tables or indexes are defined in the
database?
4.7) How do I find out what tables, indexes, databases, and users are
defined?
4.8) My queries are slow or don't make use of the indexes. Why?
4.9) How do I see how the query optimizer is evaluating my query?
4.10) What is an R-tree index?
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Indexes do not require as much overhead, but do contain the data that
is being indexed, so they can be large also.
4.7) How do I find out what tables or indexes are defined in the database?
4.7) How do I find out what tables, indexes, databases, and users are
defined?
psql has a variety of backslash commands to show such information. Use
\? to see them.
\? to see them. There are also system tables beginning with pg_ that
describe these too. Also, psql -l will list all databases.
Also try the file pgsql/src/tutorial/syscat.source. It illustrates
many of the SELECTs needed to get information from the database system

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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: Wed Apr 17 22:48:04 EDT 2002</P>
<P>Last updated: Thu Apr 18 00:44:51 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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table, and a database?<BR>
<A href="#4.6">4.6</A>) How much database disk space is required
to store data from a typical text file?<BR>
<A href="#4.7">4.7</A>) How do I find out what tables or indexes
are defined in the database?<BR>
<A href="#4.7">4.7</A>) How do I find out what tables, indexes,
databases, and users are defined?<BR>
<A href="#4.8">4.8</A>) My queries are slow or don't make use of
the indexes. Why?<BR>
<A href="#4.9">4.9</A>) How do I see how the query optimizer is
@ -893,11 +893,13 @@
<P>Indexes do not require as much overhead, but do contain the data
that is being indexed, so they can be large also.</P>
<H4><A name="4.7">4.7</A>) How do I find out what tables or indexes
are defined in the database?</H4>
<H4><A name="4.7">4.7</A>) How do I find out what tables, indexes,
databases, and users are defined?</H4>
<P><I>psql</I> has a variety of backslash commands to show such
information. Use \? to see them.</P>
information. Use \? to see them. There are also system tables
beginning with <i>pg_</i> that describe these too. Also, <i>psql
-l</i> will list all databases.</P>
<P>Also try the file <I>pgsql/src/tutorial/syscat.source</I>. It
illustrates many of the <SMALL>SELECT</SMALL>s needed to get