我需要从存储过程遍历一个记录集,并使用每个字段作为参数执行另一个存储过程.我不能在代码中完成这个迭代.我在互联网上发现了样本,但他们似乎都在处理柜台.我不知道我的问题是否涉及柜台.我需要一个foreach的T-sql等价物
目前,我的第一个存储过程将其记录集存储在临时表#mytemp中.我假设我会像这样调用二级存储过程:
- while (something)
- execute nameofstoredprocedure arg1,arg2,arg3
- end
解决方法
您需要创建一个游标循环通过记录集.
示例表:
- CREATE TABLE Customers
- (
- CustomerId INT NOT NULL PRIMARY KEY IDENTITY(1,1),FirstName Varchar(50),LastName VARCHAR(40)
- )
- INSERT INTO Customers VALUES('jane','doe')
- INSERT INTO Customers VALUES('bob','smith')
光标:
- DECLARE @CustomerId INT,@FirstName VARCHAR(30),@LastName VARCHAR(50)
- DECLARE @MessageOutput VARCHAR(100)
- DECLARE Customer_Cursor CURSOR FOR
- SELECT CustomerId,FirstName,LastName FROM Customers
- OPEN Customer_Cursor
- FETCH NEXT FROM Customer_Cursor INTO
- @CustomerId,@FirstName,@LastName
- WHILE @@FETCH_STATUS = 0
- BEGIN
- SET @MessageOutput = @FirstName + ' ' + @LastName
- RAISERROR(@MessageOutput,1) WITH NOWAIT
- FETCH NEXT FROM Customer_Cursor INTO
- @CustomerId,@LastName
- END
- CLOSE Customer_Cursor
- DEALLOCATE Customer_Cursor
以下是有关如何创建MSDN的链接.
http://msdn.microsoft.com/en-us/library/ms180169.aspx
这就是为什么我使用Raise Error而不是PRINT来输出.
http://structuredsight.com/2014/11/24/wait-wait-dont-tell-me-on-second-thought/