Re: Getting user who fired a trigger

Anton Nikiforov wrote:
> Dear All,
> I have made a trigger procedure that logs all table's changes to the
> log_table in XML format, but i do need to log a user who did that and
> not succsessful with this.
> The documentation (including "37.10. Trigger Procedures") give me nothing.
> Could somene supply me with a solution or documentation part that i
> should read?

Can't remember which part it is, but you want one of:
SELECT CURRENT_USER;
SELECT SESSION_USER;

> My trigger function is written in PL/Ruby because i found no way to make
> a "table's structure independent function" with PL/pgsql.
>
> And one more question - is there any special type to store XML instead
> of text? This question arised from the problem, that i'm planning (and i
> do need this) to store all the database updation history and some small
> procedures like adding a user will produce from 1 to 10 records in the
> log table of text type. So updating of 1 byte will produce kilobytes of
> text. So, maybe there is some compact type for XML storing? (i know that
> i could pack it and store in zipped or other format, but i would like to
> have a search possibility);

Sorry, I don't think I understand. Do you want to store multiple
versions of the same XML document?
Or are you logging changes to non-XML data as XML text (and if so why)?

--
Richard Huxton
Archonet Ltd