游标和递归sql 的一些代码

Posted 2021-01-11 山涧清泉

DECLARE @UserID INT; --推广员帐号
DECLARE @ProxyID INT; --代理帐号
DECLARE @Score INT=1000; --分数
SELECT
@UserID = [SpreaderID]
FROM
[QPAccountsDB].[dbo].[AccountsInfo]
WHERE
UserID = 5055;
SELECT --查出推广员的代理帐号
@ProxyID = ProxyID
FROM
[QPAccountsDB].[dbo].[AccountsInfo]
LEFT JOIN
[QPProxyDB].[dbo].[BS_ProxyInfo]
ON BS_ProxyInfo.account = AccountsInfo.Accounts
WHERE
UserID = @UserID;
PRINT @ProxyID;
CREATE TABLE #ProxyInfo
(
belongsAgent INT,
assignProportion TINYINT
);
WITH cte
AS ( SELECT
belongsAgent
FROM
[QPProxyDB].[dbo].[BS_ProxyInfo]
WHERE
ProxyID = @ProxyID
AND belongsAgent <> -1
UNION ALL
SELECT
a.belongsAgent
FROM
[QPProxyDB].[dbo].[BS_ProxyInfo] a
JOIN
cte b
ON a.ProxyID = b.belongsAgent
WHERE
a.belongsAgent <> -1)
INSERT #ProxyInfo
(
belongsAgent,
assignProportion
)
SELECT
BS_ProxyInfo.ProxyID,
assignProportion
FROM
cte LEFT JOIN [QPProxyDB].[dbo].[BS_ProxyInfo] ON BS_ProxyInfo.ProxyID = cte.belongsAgent
ORDER BY
BS_ProxyInfo.belongsAgent ASC;
---游标更新删除当前数据
---1.声明游标
DECLARE cursor01 CURSOR SCROLL FOR
SELECT
*
FROM
#ProxyInfo
ORDER BY
belongsAgent ASC;
DECLARE @AllTax INT
SET @AllTax [email protected]
--2.打开游标
OPEN cursor01;
--3.声明游标提取数据所要存放的变量
DECLARE
@belongsAgent INT,
@assignProportion TINYINT;
--4.定位游标到哪一行
FETCH FIRST FROM cursor01
INTO
@belongsAgent,
@assignProportion; --into的变量数量必须与游标查询结果集的列数相同
WHILE @@fetch_status = 0 --提取成功，进行下一条数据的提取操作
BEGIN

SET @[email protected]*@AllTax/100
UPDATE [QPProxyDB].[dbo].[BS_ProxyInfo] SET [email protected] WHERE [email protected]
FETCH NEXT FROM cursor01
INTO
@belongsAgent,
@assignProportion; --移动游标
END;
CLOSE cursor01;
DEALLOCATE cursor01;
DROP TABLE #ProxyInfo;