Обсуждение: Database accesss using plperl
I have plperl installed my PostgreSQL 7.4.2 server, but from what I understand in chapter 39.3 of the docs, you cannot access the databases without DBD::PgSPI. According to the readme for that module, it will only run on the untrusted plperlu. Is this the only way to run queries (SELECT, INSERT, UPDATE) using plperl? What are the consequences and things to look out for when running untrusted languages? -- Robert
On 16/06/2004 21:27 Robert Fitzpatrick wrote: > I have plperl installed my PostgreSQL 7.4.2 server, but from what I > understand in chapter 39.3 of the docs, you cannot access the databases > without DBD::PgSPI. According to the readme for that module, it will > only run on the untrusted plperlu. > > Is this the only way to run queries (SELECT, INSERT, UPDATE) using > plperl? Are you talking about writing functions/stored procedures in PERL or accessing the database from a PERL program because what you have read is specific to functions/stored procedures. (sorry for the bad/absent punctuation but I've just come back from the pub after a generous quantity of Old Speckled Hen) -- Paul Thomas +------------------------------+---------------------------------------------+ | Thomas Micro Systems Limited | Software Solutions for Business | | Computer Consultants | http://www.thomas-micro-systems-ltd.co.uk | +------------------------------+---------------------------------------------+
On Wed, 2004-06-16 at 19:05, Paul Thomas wrote: > On 16/06/2004 21:27 Robert Fitzpatrick wrote: > > I have plperl installed my PostgreSQL 7.4.2 server, but from what I > > understand in chapter 39.3 of the docs, you cannot access the databases > > without DBD::PgSPI. According to the readme for that module, it will > > only run on the untrusted plperlu. > > > > Is this the only way to run queries (SELECT, INSERT, UPDATE) using > > plperl? > > Are you talking about writing functions/stored procedures in PERL or > accessing the database from a PERL program because what you have read is > specific to functions/stored procedures. (sorry for the bad/absent > punctuation but I've just come back from the pub after a generous quantity > of Old Speckled Hen) I'm talking about writing PostgreSQL stored procedures using Perl that access the database via queries (like pl/pgsql, maybe using DBI:Pg) for SELECTs, INSERTs, UPDATEs, etc. -- Robert
On 17/06/2004 15:56 Robert Fitzpatrick wrote: > [snip] > I'm talking about writing PostgreSQL stored procedures using Perl that > access the database via queries (like pl/pgsql, maybe using DBI:Pg) for > SELECTs, INSERTs, UPDATEs, etc. Then DBI:PgSPI is what you want. AFAIK, DBI:Pg is for client-side only. HTH -- Paul Thomas +------------------------------+---------------------------------------------+ | Thomas Micro Systems Limited | Software Solutions for Business | | Computer Consultants | http://www.thomas-micro-systems-ltd.co.uk | +------------------------------+---------------------------------------------+
--- Paul Thomas <paul@tmsl.demon.co.uk> wrote: > On 17/06/2004 15:56 Robert Fitzpatrick wrote: > > [snip] > > I'm talking about writing PostgreSQL stored > procedures using Perl that > > access the database via queries (like pl/pgsql, > maybe using DBI:Pg) for > > SELECTs, INSERTs, UPDATEs, etc. > > Then DBI:PgSPI is what you want. AFAIK, DBI:Pg is > for client-side only. CommandPrompt has their own beta version of pl/perl, which does database queries: http://www.commandprompt.com/index.lxp?lxpt=22 This is certainly more actively developed than DBI:PgSPI, which only ever was an experimental, hackish workaround for the missing functionality. > > HTH > > -- > Paul Thomas > +------------------------------+---------------------------------------------+ > | Thomas Micro Systems Limited | Software Solutions > for > Business | > | Computer Consultants | > http://www.thomas-micro-systems-ltd.co.uk | > +------------------------------+---------------------------------------------+ > > ---------------------------(end of > broadcast)--------------------------- > TIP 2: you can get off all lists at once with the > unregister command > (send "unregister YourEmailAddressHere" to > majordomo@postgresql.org) > __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail
Further to my earlier email: the CommandPrompt pl/perl appears to handle trigger functions, but not direct database access? Someone correct me if I'm wrong. So DBI:PgSPI may still be the only way to query the database from a function using Perl. But are you sure you really have to use Perl? If you are looking for a language other than pl/pgsql to do queries from functions, look at pl/tcl; I think that pl/python and pl/ruby may also have some capability to do what you want. --- Paul Thomas <paul@tmsl.demon.co.uk> wrote: > On 17/06/2004 15:56 Robert Fitzpatrick wrote: > > [snip] > > I'm talking about writing PostgreSQL stored > procedures using Perl that > > access the database via queries (like pl/pgsql, > maybe using DBI:Pg) for > > SELECTs, INSERTs, UPDATEs, etc. > > Then DBI:PgSPI is what you want. AFAIK, DBI:Pg is > for client-side only. > > HTH > > -- > Paul Thomas > +------------------------------+---------------------------------------------+ > | Thomas Micro Systems Limited | Software Solutions > for > Business | > | Computer Consultants | > http://www.thomas-micro-systems-ltd.co.uk | > +------------------------------+---------------------------------------------+ > > ---------------------------(end of > broadcast)--------------------------- > TIP 2: you can get off all lists at once with the > unregister command > (send "unregister YourEmailAddressHere" to > majordomo@postgresql.org) > __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail