Getting a SQL Server Query Plan

... Country='USA' " + "ORDER BY CompanyName"; // Retrieve the plan into DataReader. SqlDataReader dr = cmd.ExecuteReader( ); // Iterate over all result sets and all rows to get plan. ... Team LiB ] Recipe 10.9 Getting a SQL Server Query Plan Problem You need to retrieve information about how query statements are executed by the SQL Server. Solution Use...

Ngày tải lên: 28/10/2013, 18:15

... Team LiB ] Recipe 10.9 Getting a SQL Server Query Plan Problem You need to retrieve information about how query statements are executed by the SQL Server. Solution Use the SET SHOWPLAN_TEXT ... the plan for. cmd.CommandText = "SELECT * FROM Customers WHERE Country='USA' " + "ORDER BY CompanyName"; // Retrieve the plan into DataRe...

Ngày tải lên: 26/01/2014, 10:20

... Handles btnView.Click Dim odaDisplay As OleDb.OleDbDataAdapter Dim dtDisplay As New DataTable() Try ' Take the txtSQLString text and create a data table; then set the ' ... data source of the data grid. odaDisplay = New OleDb.OleDbDataAdapter(Me.txtSQLString.Text, mcnn) odaDisplay.Fill(dtDisplay) Me.dgDisplay.DataSource = dtDisplay Catch excData...

Ngày tải lên: 26/01/2014, 11:20

... một (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. ... (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 sa...

Ngày tải lên: 25/08/2012, 09:00

... 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. Các system databases bao ... 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 tạo. • Msdb : Database này được SQ...

Ngày tải lên: 06/10/2013, 17:20

... SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder. SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder cb = new SqlCommandBuilder(da); // Fill table using ... READUNCOMMITTED Same as NOLOCK. REPEATABLEREAD Use the same locking as a transaction with an isolation level of REPEATABLE READ. SERIALIZABLE Use the same locking as a transaction with an isola...

Ngày tải lên: 17/10/2013, 20:15

... ADO.NET automatically 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 ... established when there's a suitable connection already available. When you close a connection, that connection isn't actually closed; instead, your connection is marked...

Ngày tải lên: 07/11/2013, 10:15

... setting a breakpoint. • The database connection from your application must be established with the .NET data provider for SQL Server before debugging a mixed-language application. After that, ... not work after the first time. When a connection is obtained from the pool rather than created, SQL debugging is not reestablished. • Changes to locals or parameter variables that...

Ngày tải lên: 07/11/2013, 13:15

... SqlConnection(" ;server= localhost;database=Northwind;uid=sa;pwd=sa"); // monitor the StateChange event using the StateChangeHandler() method mySqlConnection.StateChange += new StateChangeEventHandler(StateChangeHandler); ... StateChangeHandler() method with the StateChange event of the mySqlConnection object: mySqlConnection.StateChange += new StateChangeEventHandler(Sta...

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); ... statement. READCOMMITTED Use the same locking as a transaction with an isolation level of READ COMMITTED. READUNCOMMITTED Same as NOLOCK. REPEATABLEREAD Use the same locki...

Ngày tải lên: 14/12/2013, 18:16