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using System.Data.OracleClient;//ÒýÈëoracle²Ù×÷°ü
 
//¶¨ÒåDMLÓï¾ä
string strSQL = @"select user.name from user where user.name = :userName";
//ÉϾäÖеģºuserName¾ÍÊÇsqlÓï¾äÖвÎÊýµÄռλ·û£¬Ò²¾ÍÊÇ˵ÔÚÊý¾Ý¿â·þÎñÆ÷ÖÐÖ´ÐÐÕâÌõsqlÓï¾äµÄʱºòÕâ¸öռλ·ûÒª±»ÆäËû¶«Î÷Ìæ»»µô£¬µ½µ×ÓÃʲô¶«Î÷Ìæ»»ÄØ£¬½Ó×ÅÍùÏ¿´
OracleParameter[] param = {
new OracleParameter(":userName",txtName);
}//ÕâÀﶨÒåÒ»¸ö²ÎÊýµÄÊý×飬ÀïÃæ¿ÉÒÔдÈë¶à¸ösql²ÎÊý£¬ÔÛÃǵÄÕâÀïÖ»ÓÐÒ»¸ö£¬ËùÒÔ¾ÍдÈëÒ»¸ö²ÎÊý£¬ÕâÀイռλ·ûºÍËûµÄÌæ»»Ò²¾ÍÊDzÎÊýÖµ¶ÔÓ¦ÆðÀ´ÁË£¬txtName¾ÍÊÇռλ·ûµÄÌæ»»Öµ£¬ËûÊÇÓû§½çÃæÖÐÓû§ÊäÈëµÄÖµ£¬¾ ......

SQL SERVER ÊÓͼ Garin Zhang

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SET¡¡NOCOUNT ON;
SET Northwind;
GO
IF OBJECT_ID('dbo.ViewName') IS NOT NULL
    DROP VIEW dbo.ViewName;
GO
CREATE VIEW dbo.Viewname
AS
SELECT * from customer AS C
WHERE EXISTS
    (SELECT * from dbo.Orders AS O
     WHERE O.CustomerID = C.Customerid);
GO
**************************ÎÒÊÇ·Ö¸îÏß**************************
IF OBJECT_ID('abo.VSign') IS NOT NULL
    DROP VIEW ado.VSign;
GO
    CREATE VIEW ado.VSign
AS
    SELECT mnth, qty, SIGN((S1.qty-(SELECT TOP 1 qty from ado.Sales AS S2
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