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- Table of Contents
- Trigger Creation
- Interaction with the Trigger
- Visibility of Data Changes
While the current version of Postgres has various client
interfaces such as Perl, Tcl, Python and C, it lacks an actual
Procedural Language (PL). We hope to have
a proper PL one day. In the meantime it is possible to call C
functions as trigger actions. Note that STATEMENT-level trigger
events are not supported in the current version. You can currently
specify BEFORE or AFTER on INSERT, DELETE or UPDATE of a tuple as a