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0 votes
in SQL by (6.1k points)

I am attempting to select various prices of a product based on the quantity that the user chooses. 

Following is the query I am working on (it has a syntax error):

 select id, 
    ELSEIF(('23'>qty_1 && qty_2<='23'),price_2,1)
    ELSEIF(('23'>qty_2 && qty_3<='23'),price_3,1)
    END IF) as total 
 from product;

1 Answer

0 votes
by (12.7k points)
edited by

You have what you have used in stored procedures like this for reference, though they are not intended to be used as you have now. You can use IF, but a Case statement is better for eyes. Like this:

select id, 
        WHEN qty_1 <= '23' THEN price
        WHEN '23' > qty_1 && qty_2 <= '23' THEN price_2
        WHEN '23' > qty_2 && qty_3 <= '23' THEN price_3
        WHEN '23' > qty_3 THEN price_4
        ELSE 1
    END) AS total
 from product;

This seems cleaner. I think you do not need the inner SELECT anyway.

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