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Bruce Momjian 26 years ago
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  1. 60
      doc/FAQ
  2. 52
      doc/src/FAQ/FAQ.html

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Frequently Asked Questions (FAQ) for PostgreSQL
Last updated: Fri Jun 2 11:32:13 EDT 2000
Last updated: Wed Jul 26 13:33:21 EDT 2000
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
The most recent version of this document can be viewed at
http://www.PostgreSQL.org/docs/faq-english.html.
Linux-specific questions are answered in
http://www.PostgreSQL.org/docs/faq-linux.html.
HPUX-specific questions are answered in
http://www.PostgreSQL.org/docs/faq-hpux.html.
Solaris-specific questions are answered in
http://www.PostgreSQL.org/docs/faq-solaris.html.
Irix-specific questions are answered in
http://www.PostgreSQL.org/docs/faq-irix.html.
Platform-specific questions are answered at
http://www.PostgreSQL.org/docs/.
_________________________________________________________________
General Questions
@ -86,7 +77,7 @@
4.11) What is an R-tree index?
4.12) What is Genetic Query Optimization?
4.13) How do I do regular expression searches and case-insensitive
regular expression searching?
regular expression searches?
4.14) In a query, how do I detect if a field is NULL?
4.15) What is the difference between the various character types?
4.16.1) How do I create a serial/auto-incrementing field?
@ -127,11 +118,11 @@
replaces the PostQuel query language with an extended subset of SQL.
PostgreSQL is free and the complete source is available.
PostgreSQL development is being performed by a team of Internet
developers who all subscribe to the PostgreSQL development mailing
list. The current coordinator is Marc G. Fournier
(scrappy@PostgreSQL.org). (See below on how to join). This team is now
responsible for all development of PostgreSQL.
PostgreSQL development is performed by a team of Internet developers
who all subscribe to the PostgreSQL development mailing list. The
current coordinator is Marc G. Fournier (scrappy@PostgreSQL.org). (See
below on how to join). This team is now responsible for all
development of PostgreSQL.
The authors of PostgreSQL 1.01 were Andrew Yu and Jolly Chen. Many
others have contributed to the porting, testing, debugging and
@ -214,8 +205,8 @@
1.6) Where can I get support?
There is no official support for PostgreSQL from the University of
California, Berkeley. It is maintained through volunteer effort.
There is no support for PostgreSQL from the University of California,
Berkeley. It is maintained through volunteer effort.
The main mailing list is: pgsql-general@PostgreSQL.org. It is
available for discussion of matters pertaining to PostgreSQL. To
@ -414,8 +405,7 @@
For web integration, PHP is an excellent interface. It is at
http://www.php.net
PHP is great for simple stuff, but for more complex cases, many use
the perl interface and CGI.pm.
For complex cases, many use the perl interface and CGI.pm.
A WWW gateway based on WDB using perl can be downloaded from
http://www.eol.ists.ca/~dunlop/wdb-p95
@ -433,15 +423,15 @@
2.4) What languages are available to communicate with PostgreSQL?
We have:
* C(libpq)
* C++(libpq++)
* Embedded C(ecpg)
* Java(jdbc)
* Perl(perl5)
* ODBC(odbc)
* Python(PyGreSQL)
* TCL(libpgtcl)
* C Easy API(libpgeasy)
* C (libpq)
* C++ (libpq++)
* Embedded C (ecpg)
* Java (jdbc)
* Perl (perl5)
* ODBC (odbc)
* Python (PyGreSQL)
* TCL (libpgtcl)
* C Easy API (libpgeasy)
* Embedded HTML (PHP from http://www.php.net)
_________________________________________________________________
@ -632,9 +622,9 @@
requires more space than the backend's -S parameter allows, then
temporary files are created to hold the extra data.
The temp files should be deleted automatically, but might not if a
backend crashes during a sort. If you have no backends running at the
time, it is safe to delete the pg_tempNNN.NN files.
The temporary files should be deleted automatically, but might not if
a backend crashes during a sort. If you have no backends running at
the time, it is safe to delete the pg_tempNNN.NN files.
_________________________________________________________________
Operational Questions
@ -796,7 +786,7 @@ Maximum number of indexes on a table? unlimited
join queries through non-exhaustive search.
4.13) How do I do regular expression searches and case-insensitive regular
expression searching?
expression searches?
The ~ operator does regular-expression matching, and ~* does
case-insensitive regular-expression matching. There is no

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

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