Обсуждение: Executing external scripts
Hello, I've been doing some reading through the documentation and the archives of this list but have not got very far yet. I want to be able to create a trigger that when fired will execute an external script. I may require arguments to be passed to the script from the trigger. I can't find a definate yes/no as to whether this can actually be done or not in Postgresql 6.5.* - does anybody know? Looking over the functions section, I might be able to do what I need to do using one of the languages. However, I don't know C, and it does not apply to what I'm doing anyway. I need to use Perl, but this means writing a procedural language handler, which has to be done in C, which I don't really know..... :( Has anybody written, or knows of the existence of, a PL for Perl for Postgresql? Regards, Mark. -- Mark Jewiss Knowledge Matters Limited http://www.knowledge.com
you did not study the archive hard enough ;-) somebody answered your question days ago: no PL for perl. you can use system() (in C) to hack perl into c. in short, you need to learn c, just a little bit (ask a c guy for help). -- or has somebody already done this before, could you send the example code to the listing? thanks! Kai On Tue, 30 Nov 1999, Mark Jewiss wrote: > Hello, > > I've been doing some reading through the documentation and the archives of > this list but have not got very far yet. > > I want to be able to create a trigger that when fired will execute an > external script. I may require arguments to be passed to the script from > the trigger. > > I can't find a definate yes/no as to whether this can actually be done or > not in Postgresql 6.5.* - does anybody know? > > Looking over the functions section, I might be able to do what I need to > do using one of the languages. However, I don't know C, and it does not > apply to what I'm doing anyway. I need to use Perl, but this means writing > a procedural language handler, which has to be done in C, which I don't > really know..... :( > > Has anybody written, or knows of the existence of, a PL for Perl for > Postgresql? > > Regards, > > Mark. > -- > Mark Jewiss > Knowledge Matters Limited > http://www.knowledge.com > > > ************ >
On Tue, 30 Nov 1999, Mark Jewiss wrote: > I want to be able to create a trigger that when fired will execute an > external script. I may require arguments to be passed to the script from > the trigger. > > I can't find a definate yes/no as to whether this can actually be done or > not in Postgresql 6.5.* - does anybody know? The definite answer to this is no, not straightforwardly. You will have to write a C wrapper function. While this sure sounds like a neat feature to have, I think there are too many potential headaches. -- Peter Eisentraut Sernanders vaeg 10:115 peter_e@gmx.net 75262 Uppsala http://yi.org/peter-e/ Sweden