... 2-18. Stored procedure: SP0214_NullParameter CREATE PROCEDURE SP0214_NullParameter @ValueIn int AS if @ValueIn is null select 1 as IsParameterNull else select 0 as IsParameterNull ... initialized. Passing a nullparametervalue into a storedprocedure is not very different than passing any other parameter value. Construct the parameter using either the Parameter constructor or ... Team LiB ] Recipe 2.14 PassingNull Values to Parameters Problem You need to pass a nullvalueto a parameter. Solution Use the System.DbNull .Value static value. The sample code, as...
... 4.9 Getting StoredProcedureParameter Information at Runtime Problem You want to get information about the parameters used by a storedprocedure at runtime. Solution Use DeriveParameters( ... System stored procedure: sp_sproc_columns The second technique is specific to Microsoft SQL Server. The system storedprocedure sp_sproc_columns returns parameter information for one or more stored ... Command constructor. The Connection is opened and the DeriveParameters( ) method is called to retrieve the information about the parameters for the storedprocedure into a Parameters collection....
... XmlWriteMode.WriteSchema); cmd.Parameters.Add("@datadelete", SqlDbType.NText); cmd.Parameters["@datadelete"] .Value = sb.ToString( ); sw.Close( ); } // Execute the stored procedure. ... the system storedprocedure sp_xml_preparedocument and invalidates the handle. The syntax of the storedprocedure is: sp_xml_removedocument hDoc The argument is: hDoc An integer parameter ... Recipe 8.11 Using a Single StoredProcedureto Update Multiple Changes to a SQL Server Database Problem You need to update a SQL Server 2000 database with changes to multiple rows in a DataSet...
... loại extend stored procedure được xem như system storedprocedure và ngược lại. 5. Remote StoredProcedure : Những storedprocedure gọi stored procedure ở server khác. Viết Stored Procedure ... sau về Stored Procedure: Ðể tạo một stored procedure bạn có thể dùng Enterprise Manager click lên trên StoredProcedure -> New StoredProcedure Trong ví dụ này ta sẽ tạo ra một storedprocedure ... customer. Insert this customer to the databaseBEGINSET @CustomerID= (SELECT Max(CustomerID) FROM Customers)SET @CustomerID=@CustomerID+1INSERT INTO Customers VALUES(@CustomerID,@CustomerName)If...
... sql;command.Parameters.AddWithValue("@Ma",txtMaHS.Text.Trim());command.Parameters.AddWithValue("@Ten",txtTenHS.Text.Trim());command.Parameters.AddWithValue("@Ns",dtNgaySinh .Value) ;command.Parameters.AddWithValue("@Dc",txtDiaChi.Text.Trim());command.Parameters.AddWithValue("@Diem",txtDiemTB.Text.Trim());command.Parameters.AddWithValue("@Lop",cboLop.SelectedValue.ToString());command.ExecuteNonQuery();5. Thực thi thông qua các Stored procedure a. Cách tạo Stored Procedure - Tạo mới Stored Procedure, chọn New Stored Procedure 6Hướng ... thực thi các câu lệnh SQL thông qua Stored Procedure. o StoredProcedure không có kết quả trả về (parameter input)o StoredProcedure có kết quả trả về (parameter output)2. Cơ sở dữ liệu- ... sql;command.Parameters.AddWithValue("@Ma",txtMaHS.Text.Trim());command.Parameters.AddWithValue("@Ten",txtTenHS.Text.Trim());command.Parameters.AddWithValue("@Ns",dtNgaySinh .Value) ;command.Parameters.AddWithValue("@Dc",txtDiaChi.Text.Trim());command.Parameters.AddWithValue("@Diem",txtDiemTB.Text.Trim());command.Parameters.AddWithValue("@Lop",cboLop.SelectedValue.ToString());command.ExecuteNonQuery();5....
... CDROM 70 NCT F2 Q10Return9. Using VB 6 or VB.NET to execute the ‘AddNewOrder’ storedprocedure 10. Using xp_cmdshell extended storedprocedureto send a message (xp_cmdshell ‘net send Hello’)Tungvn40@yahoo.com ... @CustomerID smallintBEGIN TRANSACTIONIf not Exists(SELECT CustomerID FROM Customers WHERE [Name]=@CustomerName)BEGINSET @CustomerID= (SELECT Max(CustomerID) FROM Customers)SET @CustomerID=@CustomerID+1INSERT ... @CustomerID= (SELECT Max(CustomerID) FROM Customers)SET @CustomerID=@CustomerID+1INSERT INTO Customers VALUES(@CustomerID,@CustomerName)If Exists(SELECT OrderID FROM [Orders] WHERE OrderID=@OrderID)BEGINSELECT...
... pattern for SQL stored procedures is one in which the stored procedure returns one or more values into out parameters. This pattern is necessary when the stored pro-cedure returns a value that is ... necessary when the storedprocedure must return more than one value. You call a storedprocedure with an out parameter just as you would a stored procedure that only has input parameters except ... in the form“@name = value form too.9.8 Determining a Pass/Fail Result When the Stored Procedure Under Test Does Not Return a Value ProblemYou want to test a SQL storedprocedure that performs...
... extend storedprocedure được xem như system storedprocedure và ngược lại. 5. Remote StoredProcedure : Những storedprocedure gọi storedprocedure ở serverkhác. 6.4.3. Viết Stored Procedure Tên ... một stored procedure. Chúng ta hãy xem một ví dụsau về Stored Procedure: Ðể tạo một storedprocedure bạn có thể dùng Enterprise Managerclick lên trên StoredProcedure -> New StoredProcedure ... Local storedprocedure thườngđược viết bởi DBA hoặc programmer. Chúng ta sẽ bàn về cách tạo stored prcedureloại này trong phần kế tiếp. 3. Temporary StoredProcedure : Là những stored procedure...
... extend storedprocedure được xem như system storedprocedure và ngược lại. 5. Remote StoredProcedure : Những storedprocedure gọi storedprocedure ở server khác. 6.4.3. Viết Stored Procedure Tên ... một stored procedure. Chúng ta hãy xem một ví dụ sau về Stored Procedure: Ðể tạo một storedprocedure bạn có thể dùng Enterprise Manager click lên trên StoredProcedure -> New Stored Procedure ... phân biệt từng phần).BEGINSET @CustomerID= (SELECT Max(CustomerID) FROM Customers)SET @CustomerID=@CustomerID+1INSERT INTO Customers VALUES(@CustomerID,@CustomerName)If Exists(SELECT OrderID...
... Right-click on the storedprocedureto be debugged and select Step Into Stored Procedure from the popup menu. 6. If requested, supply the parameter values on the Run StoredProcedure dialog. ... menu. 2. If requested, supply the parameter values on the Run StoredProcedure dialog. Debugging a storedprocedure from managed code To debug a storedprocedure from managed code, SQL debugging ... Alternatively, if the storedprocedure is already open in a source window in Visual Studio .NET: 1. Right-click on the storedprocedureto be debugged and select Step Into Stored Procedure from the...
... routine, called UseAStoredProcedureWithAParameter, in Listing A.8. Listing A.8 basCommandExamples.vb: Calling a StoredProcedure By Using Parameters Sub UseAStoredProcedureWithAParameter(ByVal ... the StoredProcedure Called CustOrdersHist ALTER PROCEDURE CustOrderHist @CustomerID nchar(5) AS SELECT ProductName, Total=SUM(Quantity) FROM Products P, [Order Details] OD, Orders O, Customers ... ADODB.CommandTypeEnum.adCmdStoredProc. The next step is to create a parameter that the Command object will use. This parameter will match the one specified in CustOrdersHist, called CustomerID. You can...
... cmd.Parameters.Add("@State", SqlDbType.Int); // Set the value for the storedprocedure parameters. cmd.Parameters["@Severity"] .Value = severityTextBox.Text; cmd.Parameters["@State"] .Value ... // Define a storedprocedure command and the parameters. SqlCommand cmd = new SqlCommand("SP0210_Raiserror", conn); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.Add("@Severity", ... function, look up RAISERROR in SQL Server Books Online. [ Team LiB ] // Try to execute the stored procedure. cmd.ExecuteNonQuery( ); } catch(System.Data.SqlClient.SqlException ex)...
... InputOutput The parameter is both an input and output parameter, allowing the caller to pass a data valueto the storedprocedure and the storedprocedureto pass a data value back to the ... Output The parameter is an output parameter allowing the storedprocedureto pass a data value back to the caller. ReturnValue The parameter represents the value returned from the stored procedure. ... using a storedprocedureto create a DataReader and need to get the return value. When you try to access the value, it is null. How can you access the return value? Solution Use a parameter...
... sau về Stored Procedure: Ðể tạo một stored procedure bạn có thể dùng Enterprise Manager click lên trên StoredProcedure -> New Stored Procedure Trong ví dụ này ta sẽ tạo ra một storedprocedure ... customer. Insert this customer to the database BEGIN SET @CustomerID= (SELECT Max(CustomerID) FROM Customers) SET @CustomerID=@CustomerID+1 INSERT INTO Customers VALUES(@CustomerID,@CustomerName) ... dụ, * Remote StoredProcedure : Những storedprocedure gọi storedprocedure ở server khác. sp_who @loginame='DomainName\Administrators' . Có hàng trăm system storedprocedure trong...
... decided to implement is not always easy and may represent a real obstacle. Members will suddenly be obliged to bear the psychologi-cal costs involved in agreeing to be monitored, and to adhere to ... is quickly to obtain a geographical indication so as to create institutional barriers to be added to the technical or geophysical ones already in place. The objective is legally to underpin ... marks that are of particular relevance to producers who wish to implement a joint value- adding strategy. Specifically, groups of operators often decide to work with certification marks or collective...