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Posted by Jerry Stuckle on 03/28/07 18:01
bill wrote:
> In an application I am writing the user can define a series of steps to
> be followed. I save them in a sql database using the field "order" (a
> smallint) as the primary key.
> (there are in the range of 20 steps)
>
> On the admin page the steps are listed, in "order" order and the user
> can create new steps and assign an order and all is well.
>
> The problem may come in using a renumber function which should take the
> steps in their current order and reassign the "order" key, assigning
> each set an "order" that is the prior "order" + 10.
>
> In other databases I have worked with this is a major pain because as
> soon as you save a record the order may change.
> OTOH, in mysql it appears that if you do a select for the whole table
> you have them all in memory and can change the value of the field
> "order" without having to worry about getting that record again and then
> save the whole table.
>
> Is that correct ?
>
> bill
Bill,
Try asking in comp.databases.mysql. This is a PHP newsgroup.
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Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
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