Question

i have a table named item with four attribute name,code,class,value

now i want to group them in following way:

group a: name='A',code=11,class='high',value between( (5300 and 5310),(7100 and 7200),(8210 and 8290))
group b: name='b',code=11,class='high',value between( (1300 and 1310),(2100 and 2200),(3210 and 3290))

how can i do it?

Answer 1

You might want to try something like this:

SELECT
    CASE
        WHEN code = 11 AND
             class = 'high' AND
            (code BETWEEN 5300 AND 5310 OR
             code BETWEEN 7100 AND 7200 OR
             code BETWEEN 8210 AND 8290)
        THEN 'A'
        WHEN code = 11 AND
             class = 'high' AND
            (code BETWEEN 1300 AND 1310 OR
             code BETWEEN 2100 AND 2200 OR
             code BETWEEN 3210 AND 3290)
        THEN 'B'
        ELSE Unknown
    END AS name,
    *
FROM your_table
ORDER BY name

You might wish to change ORDER BY to GROUP BY and you should be aware that BETWEEN includes both endpoints.