Question

我创建了一个查询，用于计算多个表中多个总和的平均值。这需要每周运行以及当前如何编写代码我每次都需要在查询中更改4个日期。我认为这可以更有效地完成，但我不确定如何。

Select ROUND(

(Select sum (calls)
            FROM (SELECT sum(ski.ANSTIME) AS calls
            FROM SYNONYMS syn 
            JOIN SKILL ski on (syn.value = ski.split) 
            WHERE syn.ITEM_TYPE = 'split'  
            AND (SELECT (timestamp '1970-01-01 00:00:00 GMT' +numtodsinterval(ski.starttime_utc, 'SECOND'))
                at time zone 'Europe/Warsaw'
                FROM dual) >= '17-07-17 00:00:00 EUROPE/WARSAW' -- Date to be altered every week
            AND (SELECT (timestamp '1970-01-01 00:00:00 GMT' +numtodsinterval(ski.starttime_utc, 'SECOND'))
                at time zone 'Europe/Warsaw'
                FROM dual) <= '24-07-17 00:00:00 EUROPE/WARSAW' -- Date to be altered every week

            UNION ALL

            SELECT sum(vdn.ANSTIME) AS calls
            FROM SYNONYMS syn 
            JOIN VDN vdn on (syn.value = vdn.vdn) 
            WHERE syn.ITEM_TYPE = 'vdn'
            AND (SELECT (timestamp '1970-01-01 00:00:00 GMT' +numtodsinterval(vdn.starttime_utc, 'SECOND'))
                at time zone 'Europe/Warsaw'
                FROM dual) >= '17-07-17 00:00:00 EUROPE/WARSAW' -- Date to be altered every week
            AND (SELECT (timestamp '1970-01-01 00:00:00 GMT' +numtodsinterval(vdn.starttime_utc, 'SECOND'))
                at time zone 'Europe/Warsaw'
                FROM dual) <= '24-07-17 00:00:00 EUROPE/WARSAW')) -- Date to be altered every week 

/ -- devided by

            (SELECT sum (calltime)
            FROM        (SELECT sum(ski.acdcalls) AS calltime
            FROM SYNONYMS syn 
            JOIN SKILL ski on (syn.value = ski.split) 
            WHERE syn.ITEM_TYPE = 'split' 
            AND (SELECT (timestamp '1970-01-01 00:00:00 GMT' +numtodsinterval(ski.starttime_utc, 'SECOND'))
                at time zone 'Europe/Warsaw'
                FROM dual) >= '17-07-17 00:00:00 EUROPE/WARSAW' -- Date to be altered every week
            AND (SELECT (timestamp '1970-01-01 00:00:00 GMT' +numtodsinterval(ski.starttime_utc, 'SECOND'))
                at time zone 'Europe/Warsaw'
                FROM dual) <= '24-07-17 00:00:00 EUROPE/WARSAW' -- Date to be altered every week

            UNION ALL

            SELECT sum(vdn.acdcalls) AS calltime
            FROM SYNONYMS syn 
            JOIN VDN vdn on (syn.value = vdn.vdn) 
            WHERE syn.ITEM_TYPE = 'vdn'
            AND (SELECT (timestamp '1970-01-01 00:00:00 GMT' +numtodsinterval(vdn.starttime_utc, 'SECOND'))
                at time zone 'Europe/Warsaw'
                FROM dual) >= '17-07-17 00:00:00 EUROPE/WARSAW' -- Date to be altered every week
            AND (SELECT (timestamp '1970-01-01 00:00:00 GMT' +numtodsinterval(vdn.starttime_utc, 'SECOND'))
                at time zone 'Europe/Warsaw' 
                FROM dual) <= '24-07-17 00:00:00 EUROPE/WARSAW')) -- Date to be altered every week

,0) AS average
FROM dual

Answer 1

如果我理解正确您尝试生成一些每周摘要，那么您可以尝试使用trunc(sysdate)作为第二个日期而不是trunc(sysdate - 7)作为第一个日期，而不是输入日期。

第二种可能性是创建临时表（或只是with语句），该表将保存单个日期并将其连接到您的查询。相反，<= '24-07-17 00:00:00 EUROPE/WARSAW' <= temp_date temp_date来自CTE。

需要简化SQL查询（在四个位置输入日期）

1 个答案: