... Dim oSQLSvr As New SQLDMO.SQLServer() Dim strAttachMsg As String Try oSQLSvr.LoginSecure = True oSQLSvr.Connect(Me.lstSQLServers.SelectedItem) ' Attach the database ... btnDetach.Click Dim oSQLSvr As New SQLDMO.SQLServer() Dim strDetachMsg As String Try ' Connect to the server oSQLSvr.LoginSecure = True oSQLSvr.Connect(Me.lstSQLServers.SelectedItem) ... the detach strDetachMsg = oSQLSvr.DetachDB(Me.lstDatabases.SelectedItem) ' Refresh the databases GetSQLDatabases(Me.lstSQLServers.SelectedItem, Me.lstDatabases) Catch excp As...
... Recipe 10.2 Retrieving DatabaseSchema Information fromSQLServer Problem You need to retrieve databaseschema information from a SQLServer database. Solution Retrieve table schema information ... default view of schema table to the grid. schemaDataGrid.DataSource = schemaTable.DefaultView; Discussion The first solution uses information schema views that are available in SQLServer 7.0 and ... System.Data.OleDb; // . . . DataTable schemaTable; if(sqlServerRadioButton.Checked) { String getSchemaTableText = "SELECT * " + " ;FROM INFORMATION _SCHEMA. TABLES " + "WHERE...
... data from my SQLServerdatabase into an XML document format. How do I do that with SQLServer 2000? Technique To accomplish this task, you will create a Command object with the Transact -SQL ... copy it from other chapters. Here is the code for the function: Function BuildCnnStr(ByVal strServer As String, ByVal strDatabase As String) As String 12.4 Retrieve XMLfromSQLServer ... 12 solution. From the main Web page, click on the hyperlink with the caption How-To 12.4: Retrieving XMLfromSQLServer 2000. When the page loads, you will see an example of a T -SQL statement...
... (left blank / database is created via the opn_mysql .sql script) How to create a Microsoft SQLServerdatabase for the OPN System™ XT Server? 2 2. Open the opn_mssql .sql file in a ... file Microsoft SQLServer opn_mssql .sql My SQL opn_mysql .sql Oracle opn_oracle .sql How to create a Microsoft SQLServerdatabase for the OPN System™ XT Server? 4 The Query ... How to create a Microsoft SQLServerdatabase for OPN System™ XT Server? Introduction The OPN System supports McKoi, Microsoft SQL Server, MySQL and Oracle databases. You select the database...
... xmlTextBox.Text = ds.GetXml( ); Discussion SQL Server 2000 introduced support for retrieving data in XML format using the FOR XML clause. The .NET SQLServer data provider SqlCommand ... an ExecuteXmlReader( ) that allows you to retrieve an XML stream directly fromSQL Server, where it returns an XmlReader that contains the results of the SQL query. The ExecuteXmlReader( ) ... only be used with SQL statements that return XML data, such as those with a FOR XML clause. The ExecuteXmlReader( ) method can also be used to return ntext data containing valid XML. For more...
... a SQLServer Database Tác giả: Vovisoft.comCấu Trúc Của SQL Server Như đã trình bày ở các bài trước một trong những đặc điểm của SQLServer 2000 là Multiple-Instance nên khi nói đến một (SQL) ... (SQL) Server nào đó là ta nói đến một Instance của SQLServer 2000, thông thường đó là Default Instance. Một Instance của SQLServer 2000 có 4 system databases và một hay nhiều user database. ... động lại SQL Server hay khi ta disconnect. • Model : Database này đóng vai trò như một bảng kẻm (template) cho các database khác. Nghĩa là khi một user database được tạo ra thì SQLServer sẽ...
... Implement a SQLServerDatabase 3.1. Cấu Trúc Của SQL Server Như đã trình bày ở các bài trước một trong những đặc điểm của SQLServer 2000 làMultiple-Instance nên khi nói đến một (SQL) Server nào ... đến một Instance của SQL Server 2000, thông thường đó là Default Instance. Một Instance của SQLServer 2000có 4 system databases và một hay nhiều user database. Các system databases bao gồm:• ... Msdb : Database này được SQLServer Agent sử dụng để hoạch định các báo động và các công việc cần làm (schedule alerts and jobs). 3.2. Cấu Trúc Vật Lý Của Một SQLServer Database Mỗi một database...
... conn.BeginTransaction(IsolationLevel.ReadCommitted); // Create the command. SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder. SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder ... an underlying SQLServer database. Solution Use SQLServer locking hints from ADO.NET. The sample code contains three event handlers: Start Tran Button.Click Creates a SQL SELECT statement ... from the grid. dataGrid.DataSource = null; [ Team LiB ] Recipe 6.14 Specifying Locking Hints in a SQLServerDatabase Problem You need to pessimistically lock rows in an underlying SQL...
... string to the constructor SqlConnection mySqlConnection = Using a SqlConnection Object to Connect to a SQLServerDatabase You create a SqlConnection object using the SqlConnection() constructor. ... is as follows: mySqlConnection.ConnectionString = server= localhost ;database= Northwind;uid=sa; mySqlConnection.ConnectionTimeout = 15 mySqlConnection .Database = Northwind mySqlConnection.DataSource ... Console.WriteLine("mySqlConnection.ServerVersion = "+ mySqlConnection.ServerVersion); Console.WriteLine("mySqlConnection.State = "+ mySqlConnection.State); Console.WriteLine("mySqlConnection.WorkstationId...
... System.EventArgs) Handles MyBase.Load LoadSQLServers(Me.lstFromSQLServer) LoadSQLServers(Me.lstToSQLServer) End Sub 3. On the lstFromSQLServer and lstToSQLServer list boxes, add the code in Listing ... System.EventArgs) Handles lstFromSQLServer.SelectedIndexChanged GetSQLDatabases(Me.lstFromSQLServer.SelectedItem, Me.lstFromDB) End Sub Private Sub lstToSQLServer_SelectedIndexChanged(ByVal ... LoadSQLServers routine is called twice: once for the lstFromSQLServer, and a second time for the lstToSQLServer. Listing 7.18 frmHowTo7_4.vb: Calling the Routine That Loads Available SQL Servers...
... StateChange event of the mySqlConnection object: // open mySqlConnection mySqlConnection.Open(); // create a SqlCommand object SqlCommand mySqlCommand = mySqlConnection.CreateCommand(); ... mySqlConnection.Close()"); mySqlConnection.Close(); } } The output from this program is as follows: Calling mySqlConnection.Open() mySqlConnection State has changed from Closed to Open Calling mySqlConnection.Close() ... produced: System.Data.SqlClient.SqlError: This is the message from the PRINT statement The following message was produced: System.Data.SqlClient.SqlError: This is the message from the RAISERROR...
... conn.BeginTransaction(IsolationLevel.ReadCommitted); // Create the command. SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder. SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder ... SQLServer Locks Object counter that can be used to monitor lock activity. For more information about database locks, using locking hints, or monitoring database locks, see Microsoft SQLServer ... if(holdLockRadioButton.Checked) sqlText += "(HOLDLOCK)"; // Create connection. conn = new SqlConnection( ConfigurationSettings.AppSettings[" ;Sql_ ConnectString"]); conn.Open(...
... system stored procedure, see Microsoft SQL Server Books Online. [ Team LiB ] [ Team LiB ] Recipe 10.3 Retrieving Column Default Values fromSQLServer Problem The DataColumn object ... System.Data.SqlClient; // . . . StringBuilder result = new StringBuilder( ); // Fill the Orders table with schema and data. SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Orders", ... ConfigurationSettings.AppSettings[" ;Sql_ ConnectString"]); DataTable ordersTable = new DataTable(ORDERS_TABLE); da.FillSchema(ordersTable, SchemaType.Source); da.Fill(ordersTable); SqlConnection conn = new SqlConnection(...
... Value fromSQLServer Problem When you add a row into a SQLServer table that has an identity column, the value assigned to the column in the DataTable is replaced by a value generated by the database. ... so only the FirstReturnedRecord method will work with a batch SQL command. The SCOPE_IDENTITY( ) function was introduced in SQLServer 2000 to make it easier to work with identity values. ... CategoryId"; da.InsertCommand = new SqlCommand(sqlText, da.SelectCommand.Connection); da.InsertCommand.CommandType = CommandType.Text; Batch SQL commands do not support output parameters,...