Sophie: postgresql8.4-docs-8.4.12-0.1mdv2010.2 i586

postgresql8.4-docs-8.4.12-0.1mdv2010.2.i586.rpm

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>Chapter 35. Triggers</H1
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>Table of Contents</B
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>35.1. <A
HREF="trigger-definition.html"
>Overview of Trigger Behavior</A
></DT
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>35.2. <A
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>Visibility of Data Changes</A
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>35.3. <A
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>Writing Trigger Functions in C</A
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>A Complete Example</A
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>   This chapter provides general information about writing trigger functions.
   Trigger functions can be written in most of the available procedural
   languages, including
   <SPAN
CLASS="APPLICATION"
>PL/pgSQL</SPAN
> (<A
HREF="plpgsql.html"
>Chapter 38</A
>),
   <SPAN
CLASS="APPLICATION"
>PL/Tcl</SPAN
> (<A
HREF="pltcl.html"
>Chapter 39</A
>),
   <SPAN
CLASS="APPLICATION"
>PL/Perl</SPAN
> (<A
HREF="plperl.html"
>Chapter 40</A
>), and
   <SPAN
CLASS="APPLICATION"
>PL/Python</SPAN
> (<A
HREF="plpython.html"
>Chapter 41</A
>).
   After reading this chapter, you should consult the chapter for
   your favorite procedural language to find out the language-specific
   details of writing a trigger in it.
  </P
><P
>   It is also possible to write a trigger function in C, although
   most people find it easier to use one of the procedural languages.
   It is not currently possible to write a trigger function in the
   plain SQL function language.
  </P
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