... use the ADO Command object, as well as the Parameter object if you are passing parameters. You will create a Command object and supply the command text, which in this case will be the name of ... Command object you are creating-in this case by using the type of ADODB.CommandTypeEnum.adCmdStoredProc. The next step is to create a parameter that the Command object will use. This parameter ... basCommandExamples.vb: Calling a Stored Procedure By Using Parameters Sub UseAStoredProcedureWithAParameter(ByVal txtResults As TextBox) Dim cnn As New ADODB.Connection() Dim rstCurr As New ADODB.Recordset()...
... AuthID First Name Last Name A1 John Brown A2 Matthew Bortniker A3 Rick Johnson A4 Peter Wright A5 James MoonAuthorBookBookIDAuthID1 A1 2 A2 2 A3 3 A4 3 A5 3 A1 Ngoài ra một trong ... and jobs). Cấu Trúc Vật Lý C a Một SQLServer DatabaseMỗi một database trong SQLServer đều ch a ít nhất một data file chính (primary), có thể có thêm một hay nhiều data file phụ (Secondary) ... động lại SQL Server hay khi ta disconnect. • Model : Database này đóng vai trò như một bảng kẻm (template) cho các database khác. Ngh a là khi một user database được tạo ra thì SQLServer sẽ...
... (template) cho các database khác. Ngh a là khi một user database được tạo ra thì SQLServer sẽ copy toàn bộ cácsystem objects (tables, stored procedures ) từ Model database sang database mới v a ... (SQL) Server nào đó là ta nói đến một Instance c a SQLServer 2000, thông thường đó là Default Instance. Một Instance c aSQLServer 2000có 4 system databases và một hay nhiều user database. ... Sp_help ['object'] Cung cấp thông tin về một database object (table, view ) hay một data type. Sp_helpdb ['database'] Cung cấp thông tin về một database cụ thể nào đó. Sau đó...
... command. SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder. SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder cb = new SqlCommandBuilder(da); ... being read by a user and preventing users from reading data being changed by a user. Locks are acquired and released by user actions; they are managed internally by database software. A locking ... statement. READCOMMITTED Use the same locking as a transaction with an isolation level of READ COMMITTED. READUNCOMMITTED Same as NOLOCK. REPEATABLEREAD Use the same locking as a transaction...
... SHOWPLAN_TEXT (from the Query Execution category) is ON, SQLServer returns a result set containing detailed information about how the SQL statements are going to be executed rather than actually ... Microsoft SQLServer Books Online. [ Team LiB ] "ORDER BY CompanyName"; // Retrieve the plan into DataReader. SqlDataReader dr = cmd.ExecuteReader( ); // Iterate over all result ... the second contains rows detailing the plan. For batch SQL statements, the result sets alternate between statement and plan for each statement in the batch. SHOWPLAN_TEXT does not need to be...
... mySqlConnection.ConnectionString = server= localhost;database=Northwind;uid=sa; mySqlConnection.ConnectionTimeout = 15 mySqlConnection.Database = Northwind mySqlConnection.DataSource = localhost mySqlConnection.PacketSize ... when there's a suitable connection already available. When you close a connection, that connection isn't actually closed; instead, your connection is marked as unused and stored in ... stores database connections in a pool. Connection pooling offers a great performance improvement because you don't have to wait for a brand new connection to the database to be established...
... [ Team LiB ] Recipe 9.8 Debugging aSQLServer Stored Procedure Problem Given an application that uses aSQLServer stored procedure that is causing errors, you need ... Use Visual Studio .NET to debug SQLServer stored procedures (in both standalone mode and from managed code). Discussion Debugging a stored procedure in standalone mode You can debug a stored ... 2. Create a connection to the database or select an existing connection. 3. Select and expand the node for the database that contains the stored procedure. 4. Expand the Stored Procedures node....
... that handles an event is known as an event handler. You call this method when a particular event is fired. All event handler methods must return void and accept two parameters. The first parameter ... // create a SqlCommand object SqlCommand mySqlCommand = mySqlConnection.CreateCommand(); // run a PRINT statement mySqlCommand.CommandText = "PRINT 'This is the message from ... SqlConnection(" ;server= localhost;database=Northwind;uid=sa;pwd=sa"); // monitor the StateChange event using the StateChangeHandler() method mySqlConnection.StateChange += new StateChangeEventHandler(StateChangeHandler);...
... command. SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder. SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder cb = new SqlCommandBuilder(da); ... as a transaction with an isolation level of READ COMMITTED. READUNCOMMITTED Same as NOLOCK. REPEATABLEREAD Use the same locking as a transaction with an isolation level of REPEATABLE READ. ... SqlCommandBuilder(da); // Fill table using the DataAdapter. DataTable dt = new DataTable( ); da.Fill(dt); // Bind the default view of the table to the grid. dataGrid.DataSource = dt.DefaultView;...
... system administrator (sa) account. This account is available so you can authenticate as a “sysadmin” via SQLServer Authentication. When you use only the Windows Authentication Mode the sa account ... one for SQLServer and one for the SQLServer Agent. The SQLServer account is used by the SQL database engine which provides all the database related services. The SQLServer Agent account ... provided protection if any portion of the server failed, but there were no load-balancing capabilities. Windows 2000 Advanced Server and Datacenter Server add a “load-balancing” capability to clustering....
... parent-child tables at the same time, a feature that is not available in the OpenXML Transact -SQL extension. For information about the XML Bulk Load component and its methods and properties, ... a XML bulk load operation. The example defines an optional error log file, where the default is an empty string meaning that no error log is created. You can bulk load data into multiple parent-child ... Customers table The sample uses a single XML file: Customers.xml Contains the data that is bulk loaded into the Customers table The sample code creates a bulk load object SQLXMLBulkLoad and sets...
... ConfigurationSettings.AppSettings[" ;Sql_ Msde_ConnectString"]); Manager and Query Analyzer are also shared. The System.Data.SqlClient class cannot automatically discover the port number of a named instance of SQLServer ... understand what aSQLServer or MSDE named instance is and how to connect to one. The sample code contains a single event handler: Connect Button.Click Creates and opens a connection to a named ... [ Team LiB ] Recipe 1.7 Connecting to a Named Instance of SQLServer or Microsoft Data Engine (MSDE) Problem You want to connect to a named instance of aSQLServer or Microsoft Data Engine...