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distrib > Mandriva > 2008.1 > x86_64 > media > main-testing > by-pkgid > bab02a23fa9f3df8d66a9a3231b50245 > files > 428

postgresql8.3-docs-8.3.6-2mdv2008.1.x86_64.rpm

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>Chapter 41. PL/Python - Python Procedural Language</H1
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><DL
><DT
><B
>Table of Contents</B
></DT
><DT
>41.1. <A
HREF="plpython-funcs.html"
>PL/Python Functions</A
></DT
><DT
>41.2. <A
HREF="plpython-trigger.html"
>Trigger Functions</A
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>Database Access</A
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>  The <SPAN
CLASS="APPLICATION"
>PL/Python</SPAN
> procedural language allows
  <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> functions to be written in the
  <A
HREF="http://www.python.org"
TARGET="_top"
>Python language</A
>.
 </P
><P
>  To install PL/Python in a particular database, use
  <TT
CLASS="LITERAL"
>createlang plpythonu <TT
CLASS="REPLACEABLE"
><I
>dbname</I
></TT
></TT
>.
 </P
><DIV
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><BLOCKQUOTE
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><P
><B
>Tip: </B
>    If a language is installed into <TT
CLASS="LITERAL"
>template1</TT
>, all subsequently
    created databases will have the language installed automatically.
   </P
></BLOCKQUOTE
></DIV
><P
>  As of <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> 7.4, PL/Python is only
  available as an <SPAN
CLASS="QUOTE"
>"untrusted"</SPAN
> language (meaning it does not
  offer any way of restricting what users can do in it).  It has
  therefore been renamed to <TT
CLASS="LITERAL"
>plpythonu</TT
>.  The trusted
  variant <TT
CLASS="LITERAL"
>plpython</TT
> might become available again in future,
  if a new secure execution mechanism is developed in Python.
 </P
><DIV
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><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>   Users of source packages must specially enable the build of
   PL/Python during the installation process.  (Refer to the
   installation instructions for more information.)  Users of binary
   packages might find PL/Python in a separate subpackage.
  </P
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