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Commit9c1d2d6

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Update changes from Ian Barwick.
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‎doc/FAQ‎

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Frequently Asked Questions (FAQ) for PostgreSQL
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Last updated:Fri Feb14 09:03:00 EST 2003
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Last updated:Tue Feb18 00:06:42 EST 2003
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Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
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The database server can run on Windows NT and Win2k using Cygwin, the
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Cygnus Unix/NT porting library. See pgsql/doc/FAQ_MSWIN in the
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distribution or the MS Windows FAQ at
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http://www.PostgreSQL.org/docs/faq-mswin.html.
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http://www.ca.PostgreSQL.org/docs/faq-mswin.html.
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A native port to MS Win NT/2000/XP is currently being worked on.
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also PHPPgAdmin ( http://phppgadmin.sourceforge.net/ ), a web-based
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interface to PostgreSQL.
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See http://techdocs.postgresql.org/guides/GUITools for a more detailed
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list.
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2.4) What languages are able to communicate with PostgreSQL?
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Most popular programming languages contain an interface to PostgreSQL.
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VARCHAR(n) varchar size specifies maximum length, no padding
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CHAR(n) bpchar blank padded to the specified fixed length
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TEXT text no specific upper limit on length
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"char" char one character
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BYTEA bytea variable-length byte array (null-byte safe)
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"char" char one character
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You will see the internal name when examining system catalogs and in
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some error messages.
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Thelast four types above are "varlena" types (i.e., the first four
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Thefirst four types above are "varlena" types (i.e., the first four
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bytes on disk are the length, followed by the data). Thus the actual
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space used is slightly greater than the declared size. However, these
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data types are also subject to compression or being stored out-of-line
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CHAR(n) is for storing strings that are all the same length. CHAR(n)
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pads with blanks to the specified length, while VARCHAR(n) only stores
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the characters supplied. BYTEA is for storing binary data,
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particularly values that include NULL bytes.Thesetypeshave similar
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performance characteristics.
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particularly values that include NULL bytes.All thetypesdescribed
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here have similarperformance characteristics.
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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">
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<H1>Frequently Asked Questions (FAQ) for PostgreSQL</H1>
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<P>Last updated:Fri Feb14 09:03:00 EST 2003</P>
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<P>Last updated:Tue Feb18 00:06:42 EST 2003</P>
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<P>Current maintainer: Bruce Momjian (<Ahref=
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"mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</A>)<BR>
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<P>The database server can run on Windows NT and Win2k using
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Cygwin, the Cygnus Unix/NT porting library. See
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<I>pgsql/doc/FAQ_MSWIN</I> in the distribution or the MS Windows FAQ
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at<Ahref="http://www.PostgreSQL.org/docs/faq-mswin.html">
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http://www.PostgreSQL.org/docs/faq-mswin.html</A>.</P>
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at<Ahref="http://www.ca.PostgreSQL.org/docs/faq-mswin.html">
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http://www.ca.PostgreSQL.org/docs/faq-mswin.html</A>.</P>
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<p>A native port to MS Win NT/2000/XP is currently being worked
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on.</p>
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<H4><Aname="2.3">2.3</A>) Does PostgreSQL have a graphical user
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interface?</H4>
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Yes, there are several graphical interfaces to PostgreSQL available.
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<P>Yes, there are several graphical interfaces to PostgreSQL available.
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These include PgAccess<ahref="http://www.pgaccess.org">
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http://www.pgaccess.org</a>), PgAdmin II (<a
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href="http://www.pgadmin.org">http://www.pgadmin.org</a>,
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http://www.thekompany.com/products/rekall/</a>, proprietary). There is
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also PHPPgAdmin (<ahref="http://phppgadmin.sourceforge.net/">
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http://phppgadmin.sourceforge.net/</a>), a web-based interface to
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PostgreSQL.
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PostgreSQL.</P>
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<P>See<ahref="http://techdocs.postgresql.org/guides/GUITools">http://techdocs.postgresql.org/guides/GUITools</a> for a more detailed list.</P>
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<H4><Aname="2.4">2.4</A>) What languages are able to communicate with
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PostgreSQL?</H4>
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VARCHAR(n) varchar size specifies maximum length, no padding
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CHAR(n) bpchar blank padded to the specified fixed length
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TEXT text no specific upper limit on length
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"char" char one character
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BYTEA bytea variable-length byte array (null-byte safe)
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"char" char one character
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</PRE>
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<P>You will see the internal name when examining system catalogs
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and in some error messages.</P>
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<P>Thelast four types above are "varlena" types (i.e., the first
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<P>Thefirst four types above are "varlena" types (i.e., the first
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four bytes on disk are the length, followed by the data). Thus the
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actual space used is slightly greater than the declared size.
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However, these data types are also subject to compression or being
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same length.<SMALL>CHAR(n)</SMALL> pads with blanks to the specified
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length, while<SMALL>VARCHAR(n)</SMALL> only stores the characters
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supplied.<SMALL>BYTEA</SMALL> is for storing binary data,
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particularly values that include<SMALL>NULL</SMALL> bytes.These
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types have similar performance characteristics.</P>
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particularly values that include<SMALL>NULL</SMALL> bytes.All the
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typesdescribed herehave similar performance characteristics.</P>
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<H4><Aname="4.15.1">4.15.1</A>) How do I create a
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serial/auto-incrementing field?</H4>

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