小编Rob*_*Rob的帖子

我有这个丑陋的查询......

sum(CASE 
        WHEN effective_from_date < '2011-05-24' THEN (rate * (effective_to_date - '2011-05-24' + 1)) 
        WHEN effective_to_date > '2011-05-28' THEN (rate * ('2011-05-28' - effective_from_date + 1)) 
        ELSE (rate * (effective_to_date - effective_from_date + 1))
    END
    ) as price_cal_rate
        FROM calendar_event
        WHERE property_rid = (SELECT rid FROM property WHERE web_id = 'T28314') AND 
        ((effective_from_date BETWEEN '2011-05-24' AND '2011-05-28')  OR (effective_to_date BETWEEN '2011-05-24' AND '2011-05-28')) 
         AND 
         NOT EXISTS (

         SELECT days_diff FROM (


        SELECT  ((effective_from_date - lag(effective_to_date) OVER (PARTITION BY NULL ORDER …