really sorry to bother you with my connections problems.....
I've made a test using select connection_id(), to see what was the current
identifier for my connection.
Each time I change of page, the connection_id is different, I suppose that
is because I require my connection file at the beginning of each script.
This seems fine to me as I don't want to lock the tables, and the
last_insert_id is performed in the same file than the insert, so on the per
connection basis it's perfect (thank you very much for your help!!).
But it seems a bit strange to me to open so many connections. I know there
is a limit somewhere, at the moment it is not a problem I don't have a lot
of users and they are not coming often, but can it become one in the future?
I tried to find in the documentation some information on when is a
connection open or if it is possible to keep one connection per user, but
In addition I don't think it is possible because for the mysql server only
one user gets connected, it doesn't care about the users I have in my
If I misunderstood something please point me to some doc or give me some
>From: Philippe Poelvoorde <philippe@stripped>
>Reply-To: "'mysql@stripped '" <mysql@stripped>
>To: mel list_php <list_php@stripped>
>Subject: Re: last_insert_id
>Date: Tue, 15 Feb 2005 10:50:40 +0000
>mel list_php wrote:
>>I have a database where several users can connect and input data.
>>I managed to have my insert queries as atomic, but I was wondering about
>>one special case: I make one insert, and retrieve the last id inserted by
>>mysql because I need to update an other table with that id.
>>- if one user inserts and retrieves the id, but between both one other has
>>inserted something the id returned will be the right one?
>Last_insert_id() is consistent on a per-connection basis, meaning you don't
>need to use lock (hopefullly !)
>btw, what do you mean by : "I managed to have my insert queries as atomic".
>Because if you do : INSERT .... it's already suppose to be atomic.
>COS Trading Ltd.
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