Question

我正在SQL Server 2012上做作业，我必须

7）创建一个将检索的存储过程（称为SQL7）慈善机构ID和慈善机构名称以及所有捐款的总和每个慈善机构在捐款表中的金额。“

Charity ID和Charity Name位于一个表格中，第二个表格包含CharityID和Total个。{/ p>

我不知道如何添加每个慈善机构收到的总捐款并将其输出。我到目前为止的代码是

create proc SQL7
as
   select distinct 
       dbo.CharityTbl.CharityID, CharityName,
   from 
       dbo.CharityTbl, dbo.ContributionsTbl
   where 
      dbo.CharityTbl.CharityID = dbo.ContributionsTbl.CharityID

提前致谢！

Answer 1

您可能需要分组（假设table1保存慈善信息，table2保存贡献信息）

create procedure SQL7
as
  select a.charityid, a.charityname, sum(b.totalcontributions) as totals
  from CharityTbl a
  left join ContributionsTbl b on a.charityid = b.charityid
  group by a.charityid, a.charityname

SQLFiddle示例：http://sqlfiddle.com/#!3/67cca和http://sqlfiddle.com/#!3/ca00e

create table charityTbl (charityid int, charityname varchar(100));
insert into charityTbl values (1, 'Red Cross'), (2, 'Doctors without borders');

create table contributionsTbl (charityid int, totalcontributions int);
insert into contributionsTbl values
(1, 100),
(1, 200),
(2, 500);

（只是认为这是一个存储过程，并使用exec SQL7）

进行调用

 select a.charityid, a.charityname, sum(b.totalcontributions) as totals
  from CharityTbl a
  left join ContributionsTbl b on a.charityid = b.charityid
  group by a.charityid, a.charityname

结果：

| charityid |             charityname | totals |
|-----------|-------------------------|--------|
|         2 | Doctors without borders |    500 |
|         1 |               Red Cross |    300 |

Answer 2

您需要了解Join

CREATE PROC SQL7
AS
SELECT
    charity.CharityID
    ,charity.CharityName
    SUM(contrib.TotalContrib)
FROM 
    dbo.CharityTbl                  AS charity
    INNER JOIN dbo.ContributionsTbl AS contrib 
    ON contrib.CharityID = charity.CharityID
GROUP BY
    charity.CharityID
    ,charity.CharityName

Answer 3

create proc SQL7
as
SELECT CharityTbl.CharityID,
    MIN(CharityName) AS CharityName,
    SUM(contribution_amount) AS TotalContribution
FROM CharityTbl
    JOIN ContributionsTbl ON CharityTbl.CharityID = ContributionsTbl.CharityID
GROUP BY CharityTbl.CharityID

其中contribution_amount是您的贡献金额字段的名称。

Answer 4

Create Proc SQL7
As
Begin

Select CharityID, min(CharityName), Sum(Contributions) as TotalContributions
From
dbo.CharityTbl As Ch
Inner Join
dbo.Contributionstbl as Co
on ch.CharityID = Co.CharityID
group by CharityID
End

SQL Server 2012添加具有匹配ID的行的值

4 个答案: