executing a sql server

... 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()...

Ngày tải lên: 14/12/2013, 20:16

... AuthID First Name Last Name A1 John Brown A2 Matthew Bortniker A3 Rick Johnson A4 Peter Wright A5 James Moon AuthorBook BookID AuthID 1 A1 2 A2 2 A3 3 A4 3 A5 3 A1 Ngoài ra một trong ... and jobs). Cấu Trúc Vật Lý C a Một SQL Server Database Mỗi một database trong SQL Server 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 SQL Server sẽ...

Ngày tải lên: 25/08/2012, 09:00

... (template) cho các database khác. Ngh a là khi một user database được tạo ra thì SQL Server sẽ copy toàn bộ các system objects (tables, stored procedures ) từ Model database sang database mới v a ... (SQL) Server nào đó là ta nói đến một Instance c a SQL Server 2000, thông thường đó là Default Instance. Một Instance c a SQL Server 2000 có 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...

Ngày tải lên: 06/10/2013, 17:20

... 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...

Ngày tải lên: 17/10/2013, 20:15

... SHOWPLAN_TEXT (from the Query Execution category) is ON, SQL Server returns a result set containing detailed information about how the SQL statements are going to be executed rather than actually ... Microsoft SQL Server 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...

Ngày tải lên: 28/10/2013, 18:15

... 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...

Ngày tải lên: 07/11/2013, 10:15

... [ Team LiB ] Recipe 9.8 Debugging a SQL Server Stored Procedure Problem Given an application that uses a SQL Server stored procedure that is causing errors, you need ... Use Visual Studio .NET to debug SQL Server 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....

Ngày tải lên: 07/11/2013, 13:15

... 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);...

Ngày tải lên: 14/12/2013, 13:15

... 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;...

Ngày tải lên: 14/12/2013, 18:16

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Ngày tải lên: 26/01/2014, 11:20

... system administrator (sa) account. This account is available so you can authenticate as a “sysadmin” via SQL Server Authentication. When you use only the Windows Authentication Mode the sa account ... one for SQL Server and one for the SQL Server Agent. The SQL Server account is used by the SQL database engine which provides all the database related services. The SQL Server 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....

Ngày tải lên: 17/10/2013, 09:15

... 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...

Ngày tải lên: 20/10/2013, 12:15

... mySqlCommand.Parameters.Add( "@MySupplierID", SqlDbType.Int).Value = 1; mySqlCommand.Parameters.Add( "@MyCategoryID", SqlDbType.Int).Value = 1; mySqlCommand.Parameters.Add( ... System.Data; using System.Data.SqlClient; class ExecuteAddProduct { public static void Main() { SqlConnection mySqlConnection = new SqlConnection( " ;server= localhost;database=Northwind;uid=sa;pwd=sa" ... mySqlCommand.Parameters.Add( "@MyUnitsInStock", SqlDbType.SmallInt).Value = 10; mySqlCommand.Parameters.Add( "@MyUnitsOnOrder", SqlDbType.SmallInt).Value = 5; mySqlCommand.Parameters.Add(...

Ngày tải lên: 07/11/2013, 10:15

... read the rows using the DataReader object while (mySqlDataReader.Read()) { Console.WriteLine("mySqlDataReader[\" ProductName\"] = " + mySqlDataReader["ProductName"]); ... using System.Data; using System.Data.SqlClient; // step 3: execute the Command object using the ExecuteReader() // method SqlDataReader mySqlDataReader = mySqlCommand.ExecuteReader(); ... "@MySupplierID", SqlDbType.Int).Value = 1; mySqlCommand.Parameters.Add( "@MyCategoryID", SqlDbType.Int).Value = 1; mySqlCommand.Parameters.Add( "@MyQuantityPerUnit", SqlDbType.NVarChar,...

Ngày tải lên: 07/11/2013, 10:15

... 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 SQL Server ... understand what a SQL Server 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 SQL Server or Microsoft Data Engine (MSDE) Problem You want to connect to a named instance of a SQL Server or Microsoft Data Engine...

Ngày tải lên: 14/12/2013, 18:16