Question

I have columns:

CAT  | Val
------------
none | 0
high | 5
low  | 100
med  | 50

as you can see, a low number is category high. (inverse logic) except for 0..

So I want to order by, so that I get the correct order for category. (none, low, med, high).

I want them in order:

CAT  | Val
------------
none | 0
low  | 100
med  | 50
high | 5

I tried this, but it unions, and then orders by. Brackets around each select causes error.

SELECT cat,  an_int FROM CATS WHERE an_int = 0
UNION
SELECT cat, an_int FROM CATS WHERE an_int <> 0 ORDER BY an_int DESC

This gives:

CAT  | Val
------------
low  | 100
med  | 50
high | 5
none | 0

Answer 1

try this:

select * from CATS 
order by case when cat='none' then 0 else 1 end ,Val desc