Thanks for the replay, Richard.
Richard Huxton wrote:
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;
test=# SELECT CURRENT_USER; current_user -------------- anton (1 row)
test=# SELECT SESSION_USER; session_user -------------- anton (1 row)
This gives the same output. Looks like i should check this with the real operatins to understand the difference or RT*M more.
I'm storing XML prepared text in the database in the column of type text. And the question is - is there some more wise way to do that? Like column type XML maybe? :)
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)?
-- Best regads, Anton Nikiforov
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