Case statements without the need for Greater than less than

Question

i have a problem where i have 6 different priorities. from high to low:
A-A
A-B
A-C
B-A
B-B
B-C
One field on the database (default) holds the default priorities. this value in this example is (A-B)
the problem is determinig wether the (actual) value, in this example (A-C) is an "UPGRADE" or a "DOWNGRADE" from the default.
the actual value may change, the default value never changes, so i need to determine if the actual value has increased in priority or decreased in priority?
i cant use the > or < functions obviously, what i have come up with so far is:
(case when actual = 'A-A' AND ((select default from table x) IN ( 'A-B','A-C','B-A','B-B','B-C','C-A','C-B','C-C')
when actual = 'A-B' AND ((select default from table x) IN('A-C''A-C','B-A','B-B','B-C','C-A','C-B','C-C') THEN 'UPGRADE' ELSE 'DOWNGRADE' END)
is this the best way to do a query like this ????

Answer 1

try adding control to form to let them select [ <, <=, >,>=] via a drop down and enter a value, then pass these items to a function that returns a sql select...
Report Region source would be function returning sql select..
Thank you,
Tony Miller
Webster, TX