Re: server variables ?

I've got a user table for my client application and the userid variable
I'd like to set would be a value of the primary-key column and those are
integers.
I'd rather store a numeric id than the current_user as a varchar for
efficiency reasons. Even a 1 byte integer would be enough.



A. Kretschmer schrieb:
> am  Thu, dem 12.04.2007, um  5:33:30 +0200 mailte Andreas folgendes:
>
>> are there something like variables on the server-side that can be set by
>> the client?
>>
>> e.g. I'd like to store the user-id who created or updated a record.
>> I've allready got a trigger that sets a timestamp whenever a record is
>> updated. It was cute if I could let this triggers store the user-id, too.
>>
>
> If you mean with user-id the name of the current user, just use
> current_user.
>
>
>
>> I'd like to open a connection when the client application starts.
>> The client should set a variable  userid  within this connection and
>> every trigger would know who uses this connection right now.
>>
>> BTW ... How would I use this variable as a DEFAULT value when it should
>> be set just at the creation time of the record?
>> something like a collumn:
>> ...
>> created_by_fk   integer   not null   default userid,
>>
>                   text                 default current_user
>
>
>
>
>> ...
>>
>> How could I use such a variables value in views?
>>
>
> select ... from your_view where created_by_fk = current_user
>
>
>
> Andreas
>