Tony Marston wrote:
There is no automatic way to rebuild a table and have the missing
auto-increment values used up. This could cause a serious problem if
one of these primary keys was a foreign key on another table.
Why do you need a deleted row to be re-used? What problem does it
cause to have a missing id number?
"Pjotr Wedersteers" <x3****@westerterp.com> wrote in message
news:41***********************@news.xs4all.nl... I have a table with quiz questions. Each question has a unique ID,
based on an auto_increment field.
Now I've discovered that with deleting rows from the table the
deleted ID's
are not reissued. Makes sense, just thought of that a bit late.
How can I simply re-index or update or how one would call it, the
columns holding the ID numbers ? Is there a ready-made mysql command
or do I have to
load all rows in PHP and modify where necessary ?
TIA
Pjotr
I intended on using a random ID number 1..num_rows and retrieving the
question with that ID from the table. I will now have to do an additional
check to see whether mysql_reult for that random number holds a row of data
indeed. No biggy in this case. I think in retrospect in this case
auto_increment just wasn't the field to use. I had better used a UNIQUE id
field I numbered myself.
Thanks both for the advise. I somehow already figured tampering with
auto-increment data wasn't a wise plan.
Pjotr