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doc/FAQ
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Frequently Asked Questions (FAQ) for PostgreSQL
Last updated: Fri Feb 14 09:03:00 EST 2003
Last updated: Tue Feb 18 00:06:42 EST 2003
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
@ -194,7 +194,7 @@
The database server can run on Windows NT and Win2k using Cygwin, the
Cygnus Unix/NT porting library. See pgsql/doc/FAQ_MSWIN in the
distribution or the MS Windows FAQ at
http://www.PostgreSQL.org/docs/faq-mswin.html.
http://www.ca.PostgreSQL.org/docs/faq-mswin.html.
A native port to MS Win NT/2000/XP is currently being worked on.
@ -422,6 +422,9 @@
also PHPPgAdmin ( http://phppgadmin.sourceforge.net/ ), a web-based
interface to PostgreSQL.
See http://techdocs.postgresql.org/guides/GUITools for a more detailed
list.
2.4) What languages are able to communicate with PostgreSQL?
Most popular programming languages contain an interface to PostgreSQL.
@ -823,13 +826,13 @@ Type Internal Name Notes
VARCHAR(n) varchar size specifies maximum length, no padding
CHAR(n) bpchar blank padded to the specified fixed length
TEXT text no specific upper limit on length
"char" char one character
BYTEA bytea variable-length byte array (null-byte safe)
"char" char one character
You will see the internal name when examining system catalogs and in
some error messages.
The last four types above are "varlena" types (i.e., the first four
The first four types above are "varlena" types (i.e., the first four
bytes on disk are the length, followed by the data). Thus the actual
space used is slightly greater than the declared size. However, these
data types are also subject to compression or being stored out-of-line
@ -841,8 +844,8 @@ BYTEA bytea variable-length byte array (null-byte safe)
CHAR(n) is for storing strings that are all the same length. CHAR(n)
pads with blanks to the specified length, while VARCHAR(n) only stores
the characters supplied. BYTEA is for storing binary data,
particularly values that include NULL bytes. These types have similar
performance characteristics.
particularly values that include NULL bytes. All the types described
here have similar performance characteristics.
4.15.1) How do I create a serial/auto-incrementing field?

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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: Fri Feb 14 09:03:00 EST 2003</P>
<P>Last updated: Tue Feb 18 00:06:42 EST 2003</P>
<P>Current maintainer: Bruce Momjian (<A href=
"mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</A>)<BR>
@ -245,8 +245,8 @@
<P>The database server can run on Windows NT and Win2k using
Cygwin, the Cygnus Unix/NT porting library. See
<I>pgsql/doc/FAQ_MSWIN</I> in the distribution or the MS Windows FAQ
at <A href="http://www.PostgreSQL.org/docs/faq-mswin.html">
http://www.PostgreSQL.org/docs/faq-mswin.html</A>.</P>
at <A href="http://www.ca.PostgreSQL.org/docs/faq-mswin.html">
http://www.ca.PostgreSQL.org/docs/faq-mswin.html</A>.</P>
<p>A native port to MS Win NT/2000/XP is currently being worked
on.</p>
@ -535,7 +535,7 @@
<H4><A name="2.3">2.3</A>) Does PostgreSQL have a graphical user
interface?</H4>
Yes, there are several graphical interfaces to PostgreSQL available.
<P>Yes, there are several graphical interfaces to PostgreSQL available.
These include PgAccess <a href="http://www.pgaccess.org">
http://www.pgaccess.org</a>), PgAdmin II (<a
href="http://www.pgadmin.org">http://www.pgadmin.org</a>,
@ -545,7 +545,9 @@
http://www.thekompany.com/products/rekall/</a>, proprietary). There is
also PHPPgAdmin (<a href="http://phppgadmin.sourceforge.net/">
http://phppgadmin.sourceforge.net/ </a>), a web-based interface to
PostgreSQL.
PostgreSQL.</P>
<P>See <a href="http://techdocs.postgresql.org/guides/GUITools">http://techdocs.postgresql.org/guides/GUITools</a> for a more detailed list.</P>
<H4><A name="2.4">2.4</A>) What languages are able to communicate with
PostgreSQL?</H4>
@ -1037,14 +1039,14 @@ Type Internal Name Notes
VARCHAR(n) varchar size specifies maximum length, no padding
CHAR(n) bpchar blank padded to the specified fixed length
TEXT text no specific upper limit on length
"char" char one character
BYTEA bytea variable-length byte array (null-byte safe)
"char" char one character
</PRE>
<P>You will see the internal name when examining system catalogs
and in some error messages.</P>
<P>The last four types above are "varlena" types (i.e., the first
<P>The first four types above are "varlena" types (i.e., the first
four bytes on disk are the length, followed by the data). Thus the
actual space used is slightly greater than the declared size.
However, these data types are also subject to compression or being
@ -1058,8 +1060,8 @@ BYTEA bytea variable-length byte array (null-byte safe)
same length. <SMALL>CHAR(n)</SMALL> pads with blanks to the specified
length, while <SMALL>VARCHAR(n)</SMALL> only stores the characters
supplied. <SMALL>BYTEA</SMALL> is for storing binary data,
particularly values that include <SMALL>NULL</SMALL> bytes. These
types have similar performance characteristics.</P>
particularly values that include <SMALL>NULL</SMALL> bytes. All the
types described here have similar performance characteristics.</P>
<H4><A name="4.15.1">4.15.1</A>) How do I create a
serial/auto-incrementing field?</H4>