Ivan Voras wrote:
Hi,
I'd like to implement some simple data logging via triggers on a small
number of infrequently updated tables and I'm wondering if there are
some helpful functions, plugins or idioms that would serialize a row
(received for example in a AFTER INSERT trigger) into a string that
I'd store in the log table. There's a limited number of field types
involved: varchars, integers and booleans. I'm not looking for
anything fancy, comma-separated string result will be just fine; Even
better, something like a dictionary ("field_name":"field_value",...)
would be nice. The reason for trying to do it this way is that I don't
want to create separate log tables for every table I wish to log.
Why not create the audit tables with composite types rather than strings?
create table audit_foo_table as (who text, when timestamptz, old
foo, new foo);
Or you could use an hstore (see contrib).
Or you could possibly use some of the XML support in 8.3 for serialization.
This is a usage question, so it really doesn't belong on -hackers.
cheers
andrew
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