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I would use case:

SELECT CUSTNO, CASE WHEN COL1 IS NOT NULL then 1 ELSE 0 END +
CASE WHEN COL2 IS NOT NULL then 1 ELSE 0 END +
CASE WHEN COL6 IS NOT NULL then 1 ELSE 0 END as
COLUMNS

WHERE COLUMNS BETWEEN 2 and 4

Won't work. But this will:

WITH T1 AS (SELECT -- put everything except the WHERE here
) SELECT * FROM T1 WHERE COLUMNS BETWEEN 2 and 3


Dennis Lovelady
http://www.linkedin.com/in/dennislovelady
--
"Always do right. This will gratify some people and astonish the rest."
-- Mark Twain




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