Hi!
>>>>> "Chris" == Chris W <falco@stripped> writes:
Chris> Hello everyone, I have a question about duplicate entries in the database.
Chris> Let say I have database and have ProductID that is my index and it is auto
> incremented, but I found that there are few entries that are duplicate. Now I want to
> remove those entries, will I have to reindex the DB? or can I leave it as it is? When new
> entry will be added will it use the next available auto incremented index number or will
> it use the spot that was available when the previous entry was removed?
If you are using an ISAM (.ISD) table, new entries will be inserted
with the id = MAX(id)+1 ; This means that if you delete the biggest
id, it will be reused. (This is fixed in MySQL 3.23 when you use MyISAM).
Chris> Also what is the syntax to remove the whole entry in the database that is
> assigned to that particular product? Thank you very much.
Sorry, I am now 100 % sure what you meant. Are you talking about
databases or tables? (A database is a collection of tables)
DELETE FROM table_name WHERE id=some_id.;
Chris> Those are my first steps with the DB so please do not comment this in negative
> way because remember when you started.
Chris> Thank you very much for your time and help.
Chris> Chris
Yours,
Monty
*************** Warning commercial signature follows **********
If you like TCX's concept of a 'mostly free' database and free
advice, you should at least CONSIDER supporting us, so that we can
afford to continue this service up. http://www.mysql.com/
