CASE Expression question

Question

Hi,
I am wondering how to implement case logic where THEN statement would be written only once for many WHEN's.
This example is from the oracle documentation, I extended it a bit.
SELECT cust_last_name,
CASE credit_limit
WHEN 100 THEN 'Low'
WHEN 200 THEN 'Low'
WHEN 5000 THEN 'High'
ELSE 'Medium'
END
FROM customers;
As you see we select 'Low' for both values 100 and 200.
What I am really looking for is something like:
SELECT cust_last_name,
CASE credit_limit
WHEN 100
WHEN 200 THEN 'Low'
WHEN 5000 THEN 'High'
ELSE 'Medium'
END
FROM customers;
OR
SELECT cust_last_name,
CASE credit_limit
WHEN 100 OR 200
THEN 'Low'
WHEN 5000 THEN 'High'
ELSE 'Medium'
END
FROM customers;
But both of selects are not valid in oracle (tested on 10g Rel2)
Maybe it is very simple and I am witting it wrong, or it is working only the way I have to repeat the THEN to every WHEN.
Thanks in advance!
let's say I would like to perform the same step

Answer 1

Hello
What about
tylerd@DEV2> SELECT
  2      CASE
  3          WHEN dummy IN('X','Y','Z') THEN
  4              'Dummy is X, Y or Z'
  5          WHEN dummy LIKE 'A%' THEN
  6              'Dummy is like A'
  7          ELSE
  8              'Dummy is something else'
  9      END
10  FROM
11      dual
12  /
CASEWHENDUMMYIN('X','Y'
Dummy is X, Y or ZTHTH
David