Question

I have an int id column that I need to do a one-time maintenance/fix update on.

For example, currently the values look like this:
1
2
3

I need to make the following change:
1=3
2=1
3=2

Is there a way to do this in one statement? I keep imagining that the update will get confused if say the change from 1=3 to occurs then when it comes to 3=2 it will change that 1=3 update to 3=2 which gives

Incorrectly:
2
1
2

If that makes sense,
rod.

Answer 1

What about a sql case statement (something like this)?

UPDATE table SET intID = CASE 
WHEN intID = 3 THEN 2
WHEN intID = 1 THEN 3
WHEN intID = 2 THEN 1
END