2009/4/7 Stuart McGraw <smcg2297(at)frii(dot)com>:
> Hello all,
>
> I have a table with a primary key column
> that contains sequential numbers.
>
> Sometimes I need to shift them all up or down
> by a fixed amount. For example, if I have
> four rows with primary keys, 2, 3, 4, 5, I
> might want to shift them down by 1 by doing:
>
Generally speaking, when you need to do this more than once or twice
in the lifetime of your data, there's something wrong with your data
model.