如何对表格中的价格行求和这是我的代码。$sql=mysql_query("SELECT sum(Price) * FROM reservations as A inner join personel as C on A.Res_per_ID = C.Per_ID
where Res_cus_ID = '$userID'
基本上,当某个值(在我的例子中是COMMUNICATIONS_ID)相等时,我会尝试对计算字段的值进行求和。这些分数与相同的COMMUNICATIONS_ID相关联,我想对这些值求和。我是SQL新手,这是我误入歧途的第一次尝试:FROM consumer_action_log as cal1
JOIN consumer_action_log as cal2
我运行以下求和查询,然后得到完全相同的答案Select L_PARTKEY,sum(L_LINENUMBER) As A Inner Join ordersOn orders.O_ORDERKEY = lineitem.L_ORDERKEY Group by L_PARTKEYSELECTsum(IF(orders.O_WEEKDAY='Tuesday',L_LI
我希望通过对每周值的求和,在SQL中创建滚动平均值。我的问题是,我总结的范围是年周,因此不被认为是整数值,所以我有问题,设置范围求和。date range between interval '30 days' preceding and current row) as 'MovingAvg'
left join我正在使用vertica SQL。
请看下面的图片,我想对我的sql语句做些什么。我使用了left join和ISNULL来获得所有的结果,除了我没有得到总数之外,我想要对每个客户的数字求和。所有表b的值都是整数。Select a.CustomerId, a.FName, a.LName, b.mtg1, b.mtg2, b.mtg3, b.mtg4 From Customer a Left Join Hours