douyi02577 2012-07-25 14:52
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mysql根据LEAST值返回正确的链接

OK this is a bit tricky but basically in my SQL statement im comparing prices between fields in each row to get the lowest value returned, now the issue is that each value has a link.

Would there be a way to return the correct link depending on the lowest value in an SQL statement?

below is my SQL statement.

SELECT 
   title, 
   my_value, 
   my_ink,

   LEAST(site_a_value, site_b_value, site_c_value) AS lowest_value, 

   site_a_link,
   site_b_link,
   site_c_link

   FROM STOCK

so for example if site_b had the lowest value I would only want site_b_link to be returned.

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  • dqyin0101 2012-07-25 15:00
    关注

    Try

    SELECT     title,
                my_value,
                my_ink,
                LEAST(site_a_value, site_b_value, site_c_value) AS lowest_value,     
                case LEAST(site_a_value, site_b_value, site_c_value)
                when site_a_value then site_a_link
                when site_b_value then site_b_link
                when site_c_value then site_c_link end AS lowest_value_link,
    FROM STOCK 
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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