sql个人总结4

标签：sql   数据库   数据   

说到sql，无疑存储过程很重要，这篇就和大家讨论储存过程。

1：储存过程

a：不带参数的储存过程

USE test
GO
CREATE PROCEDURE WLY    --储存过程，不带参数
AS
SELECT * FROM role
GO

USE test
GO
CREATE PROCEDURE WLY1 
@A INT
AS 
DECLARE @B INT
SET @B=1
SET @A=@B
PRINT @A
GO

USE test
GO
CREATE PROCEDURE WLY2 
@A INT OUTPUT    --输出参数值的参数
AS 
DECLARE @B INT
SET @B=1
select @A=@B
PRINT @A
GO

SP_HELP WLY1    --返回储存过程的名称，时间，参数等
SP_HELPTEXT WLY1 --返回储存过程的创建语句
SP_RENAME WLY,WLY2  --重命名储存过程
GO

execute dbo.WLY
EXECUTE WLY1 1 --有参数的储存过程
DECLARE @C INT    --带参数的输出
EXECUTE WLY2 @C OUTPUT
GO

DECLARE C_ROLE CURSOR SCROLL
FOR SELECT RID,RNAME FROM ROLE
FOR READ ONLY
DECLARE @COUNT INT,@VRID INT,@VRNAME VARCHAR(1)
OPEN C_ROLE
FETCH NEXT FROM C_ROLE
INTO @VRID,@VRNAME
SET @COUNT=0
WHILE @@FETCH_STATUS=0
BEGIN 
    PRINT @VRID
    PRINT @VRNAME
    PRINT @COUNT
    SET @COUNT=@COUNT+1
    FETCH NEXT FROM C_ROLE INTO @VRID,@VRNAME
END
CLOSE C_ROLE
DEALLOCATE C_ROLE
GO 

sql个人总结4

标签：sql   数据库   数据   

原文地址：http://blog.csdn.net/u014274324/article/details/44102833