Update FAQ.
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Bruce Momjian
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doc/FAQ
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doc/FAQ
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Frequently Asked Questions (FAQ) for PostgreSQL
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Last updated: Fri Jun 2 11:32:13 EDT 2000
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Last updated: Wed Jul 26 13:33:21 EDT 2000
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Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
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The most recent version of this document can be viewed at
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http://www.PostgreSQL.org/docs/faq-english.html.
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Linux-specific questions are answered in
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http://www.PostgreSQL.org/docs/faq-linux.html.
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HPUX-specific questions are answered in
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http://www.PostgreSQL.org/docs/faq-hpux.html.
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Solaris-specific questions are answered in
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http://www.PostgreSQL.org/docs/faq-solaris.html.
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Irix-specific questions are answered in
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http://www.PostgreSQL.org/docs/faq-irix.html.
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Platform-specific questions are answered at
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http://www.PostgreSQL.org/docs/.
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_________________________________________________________________
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General Questions
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@ -86,7 +77,7 @@
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4.11) What is an R-tree index?
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4.12) What is Genetic Query Optimization?
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4.13) How do I do regular expression searches and case-insensitive
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regular expression searching?
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regular expression searches?
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4.14) In a query, how do I detect if a field is NULL?
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4.15) What is the difference between the various character types?
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4.16.1) How do I create a serial/auto-incrementing field?
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@ -127,11 +118,11 @@
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replaces the PostQuel query language with an extended subset of SQL.
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PostgreSQL is free and the complete source is available.
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PostgreSQL development is being performed by a team of Internet
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developers who all subscribe to the PostgreSQL development mailing
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list. The current coordinator is Marc G. Fournier
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(scrappy@PostgreSQL.org). (See below on how to join). This team is now
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responsible for all development of PostgreSQL.
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PostgreSQL development is performed by a team of Internet developers
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who all subscribe to the PostgreSQL development mailing list. The
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current coordinator is Marc G. Fournier (scrappy@PostgreSQL.org). (See
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below on how to join). This team is now responsible for all
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development of PostgreSQL.
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The authors of PostgreSQL 1.01 were Andrew Yu and Jolly Chen. Many
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others have contributed to the porting, testing, debugging and
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@ -214,8 +205,8 @@
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1.6) Where can I get support?
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There is no official support for PostgreSQL from the University of
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California, Berkeley. It is maintained through volunteer effort.
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There is no support for PostgreSQL from the University of California,
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Berkeley. It is maintained through volunteer effort.
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The main mailing list is: pgsql-general@PostgreSQL.org. It is
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available for discussion of matters pertaining to PostgreSQL. To
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@ -414,8 +405,7 @@
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For web integration, PHP is an excellent interface. It is at
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http://www.php.net
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PHP is great for simple stuff, but for more complex cases, many use
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the perl interface and CGI.pm.
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For complex cases, many use the perl interface and CGI.pm.
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A WWW gateway based on WDB using perl can be downloaded from
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http://www.eol.ists.ca/~dunlop/wdb-p95
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@ -433,15 +423,15 @@
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2.4) What languages are available to communicate with PostgreSQL?
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We have:
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* C(libpq)
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* C++(libpq++)
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* Embedded C(ecpg)
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* Java(jdbc)
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* Perl(perl5)
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* ODBC(odbc)
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* Python(PyGreSQL)
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* TCL(libpgtcl)
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* C Easy API(libpgeasy)
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* C (libpq)
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* C++ (libpq++)
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* Embedded C (ecpg)
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* Java (jdbc)
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* Perl (perl5)
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* ODBC (odbc)
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* Python (PyGreSQL)
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* TCL (libpgtcl)
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* C Easy API (libpgeasy)
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* Embedded HTML (PHP from http://www.php.net)
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_________________________________________________________________
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@ -632,9 +622,9 @@
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requires more space than the backend's -S parameter allows, then
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temporary files are created to hold the extra data.
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The temp files should be deleted automatically, but might not if a
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backend crashes during a sort. If you have no backends running at the
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time, it is safe to delete the pg_tempNNN.NN files.
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The temporary files should be deleted automatically, but might not if
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a backend crashes during a sort. If you have no backends running at
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the time, it is safe to delete the pg_tempNNN.NN files.
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_________________________________________________________________
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Operational Questions
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@ -796,7 +786,7 @@ Maximum number of indexes on a table? unlimited
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join queries through non-exhaustive search.
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4.13) How do I do regular expression searches and case-insensitive regular
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expression searching?
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expression searches?
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The ~ operator does regular-expression matching, and ~* does
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case-insensitive regular-expression matching. There is no
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@ -7,7 +7,7 @@
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Frequently Asked Questions (FAQ) for PostgreSQL
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</H1>
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<P>
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Last updated: Fri Jun 2 11:32:13 EDT 2000
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Last updated: Wed Jul 26 13:33:21 EDT 2000
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<P>
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Current maintainer: Bruce Momjian (<A
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HREF="mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</A>)<BR><P>
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@ -16,17 +16,8 @@ The most recent version of this document can be viewed at
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<A HREF="http://www.Postgresql.org/docs/faq-english.html">
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http://www.PostgreSQL.org/docs/faq-english.html</A>.<P>
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Linux-specific questions are answered in <A
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HREF="http://www.PostgreSQL.org/docs/faq-linux.html">http://www.PostgreSQL.org/docs/faq-linux.html</A>.<P>
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HPUX-specific questions are answered in <A
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HREF="http://www.PostgreSQL.org/docs/faq-hpux.html">http://www.PostgreSQL.org/docs/faq-hpux.html</A>.<P>
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Solaris-specific questions are answered in <A
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HREF="http://www.PostgreSQL.org/docs/faq-solaris.html">http://www.PostgreSQL.org/docs/faq-solaris.html</A>.<P>
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Irix-specific questions are answered in <A
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HREF="http://www.PostgreSQL.org/docs/faq-irix.html">http://www.PostgreSQL.org/docs/faq-irix.html</A>.<P>
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Platform-specific questions are answered at <A
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HREF="http://www.PostgreSQL.org/docs/">http://www.PostgreSQL.org/docs/</A>.<P>
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<HR><P>
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@ -115,7 +106,7 @@ evaluating my query?<BR>
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<A HREF="#4.12">4.12</A>) What is Genetic Query Optimization?<BR>
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<A HREF="#4.13">4.13</A>) How do I do regular expression searches
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and case-insensitive regular expression searching?<BR>
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and case-insensitive regular expression searches?<BR>
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<A HREF="#4.14">4.14</A>) In a query, how do I detect if a field
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is NULL?<BR>
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<A HREF="#4.15">4.15</A>) What is the difference between the
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@ -169,7 +160,7 @@ powerful data model and rich data types of POSTGRES, it replaces the
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PostQuel query language with an extended subset of SQL. PostgreSQL is
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free and the complete source is available.<P>
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PostgreSQL development is being performed by a team of Internet
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PostgreSQL development is performed by a team of Internet
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developers who all subscribe to the PostgreSQL development mailing list.
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The current coordinator is Marc G. Fournier (<A
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HREF="mailto:scrappy@PostgreSQL.org">scrappy@PostgreSQL.org</A>). (See
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@ -252,13 +243,13 @@ platforms (some of these compiles require gcc):
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<H4><A NAME="1.4">1.4</A>) What non-unix ports are available?</H4><P>
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It is possible to compile the libpq C library, psql, and other
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It is possible to compile the <I>libpq</I> C library, psql, and other
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interfaces and binaries to run on MS Windows platforms. In this case,
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the client is running on MS Windows, and communicates via TCP/IP to a
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server running on one of our supported Unix platforms.<P>
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A file <I>win31.mak</I> is included in the distribution for making a
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Win32 libpq library and psql.<P>
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Win32 <I>libpq</I> library and psql.<P>
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The database server is now working on Windows NT using the Cygnus
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Unix/NT porting library. See <I>pgsql/doc/FAQ_NT</I> in the distribution.<P>
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@ -272,7 +263,7 @@ For mirror sites, see our main web site.
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<H4><A NAME="1.6">1.6</A>) Where can I get support?</H4><P>
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There is no official support for PostgreSQL from the University of
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There is no support for PostgreSQL from the University of
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California, Berkeley. It is maintained through volunteer effort.<P>
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The main mailing list is: <A
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@ -531,8 +522,7 @@ http://www.phone.net/home/mwm/hotlist/.</A><P>
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For web integration, PHP is an excellent interface. It is at
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<A HREF="http://www.php.net">http://www.php.net</A><P>
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PHP is great for simple stuff, but for more complex cases, many
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use the perl interface and CGI.pm.<P>
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For complex cases, many use the perl interface and CGI.pm.<P>
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A WWW gateway based on WDB using perl can be downloaded from <A
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HREF="http://www.eol.ists.ca/~dunlop/wdb-p95">http://www.eol.ists.ca/~dunlop/wdb-p95</A>
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@ -553,15 +543,15 @@ communicate with PostgreSQL?</H4><P>
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We have:
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<UL>
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<LI>C(libpq)
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<LI>C++(libpq++)
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<LI>Embedded C(ecpg)
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<LI>Java(jdbc)
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<LI>Perl(perl5)
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<LI>ODBC(odbc)
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<LI>Python(PyGreSQL)
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<LI>TCL(libpgtcl)
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<LI>C Easy API(libpgeasy)
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<LI>C (libpq)
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<LI>C++ (libpq++)
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<LI>Embedded C (ecpg)
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<LI>Java (jdbc)
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<LI>Perl (perl5)
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<LI>ODBC (odbc)
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<LI>Python (PyGreSQL)
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<LI>TCL (libpgtcl)
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<LI>C Easy API (libpgeasy)
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<LI>Embedded HTML (<A HREF="http://www.php.net">PHP from http://www.php.net</A>)
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</UL><P>
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@ -783,7 +773,7 @@ example, if a sort needs to be done to satisfy an <SMALL>ORDER BY,</SMALL> and
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the sort requires more space than the backend's <I>-S</I> parameter allows,
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then temporary files are created to hold the extra data.<P>
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The temp files should be deleted automatically, but might not if a backend
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The temporary files should be deleted automatically, but might not if a backend
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crashes during a sort. If you have no backends running at the time,
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it is safe to delete the pg_tempNNN.NN files.<P>
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@ -977,7 +967,7 @@ Algorithm (GA). It allows the handling of large join queries through
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non-exhaustive search.<P>
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<H4><A NAME="4.13">4.13</A>) How do I do regular expression searches and
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case-insensitive regular expression searching?</H4><P>
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case-insensitive regular expression searches?</H4><P>
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The <I>~</I> operator does regular-expression matching, and <I>~*</I>
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does case-insensitive regular-expression matching. There is no
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@ -1231,7 +1221,7 @@ Beware of mixing <I>malloc/free</I> and <I>palloc/pfree.</I>
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functions to PostgreSQL?</H4><P>
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Send your extensions to the pgsql-hackers mailing list, and they will
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Send your extensions to the <I>pgsql-hackers</I> mailing list, and they will
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eventually end up in the <I>contrib/</I> subdirectory.<P>
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