On Mon, 2 Jun 2003, Frank Nørvig wrote:
> Hello,
>
> I was wondering if the following could be done with an advanced
> sql-statement in MySQL 3.23:
>
> I have 5 tables with the following columns: id, name, phonenumber
> I need to check for duplicate phonenumbers in the 5 tables, that is if the
Hello,
I was wondering if the following could be done with an advanced
sql-statement in MySQL 3.23:
I have 5 tables with the following columns: id, name, phonenumber
I need to check for duplicate phonenumbers in the 5 tables, that is if the
same phonenumber exists in 3 tables or more.
I've tried
