Question

我使用以下查询返回账单的总额，税金和总和税金的总额。但问题是，因为我使用sum（）它只返回第一个如何检索所有行和总计？

SELECT sum(
            at_salesbill.`billedTotal` + at_salesbill.`billedTotalTax`
            ) as grantTotal,
       at_salesbill.`billedTotal` AS at_salesbill_billedTotal,
       at_salesbill.`billedTotalTax` AS billedTotalTax,
  FROM at_salesbill
 WHERE at_salesbill.`billGuid` = 44;

Answer 1

您只需添加值即可获得总和：

SELECT (at_salesbill.`billedTotal`+at_salesbill.`billedTotalTax`) as grantTotal,
       at_salesbill.`billedTotal` AS at_salesbill_billedTotal,
       at_salesbill.`billedTotalTax` AS billedTotalTax,
from at_salesbill
where at_salesbill.`billGuid` = 44;

然后，假设行中有唯一的id，您可以通过一个技巧来获取总数和值：

SELECT at_salesbill.id,
       sum(at_salesbill.`billedTotal`+at_salesbill.`billedTotalTax`) as grantTotal,
       at_salesbill.`billedTotal` AS at_salesbill_billedTotal,
       at_salesbill.`billedTotalTax` AS billedTotalTax,
from at_salesbill
where at_salesbill.`billGuid` = 44
group by at_salesbill.id with rollup;

在这里，sum()没有任何意义 - 因为每组中都有一行。但是，with rollup会添加一个总列，其中id为NULL。

SELECT (case when at_salesbill.id is NULL then 'total' else '' end),
       sum(at_salesbill.`billedTotal`+at_salesbill.`billedTotalTax`) as grantTotal,
       at_salesbill.`billedTotal` AS at_salesbill_billedTotal,
       at_salesbill.`billedTotalTax` AS billedTotalTax,
from at_salesbill
where at_salesbill.`billGuid` = 44
group by at_salesbill.id with rollup;

查询返回两列的总和

1 个答案: