find duplicate records in a table using sql server

Ngày tải lên: 21/01/2014, 12:20

... HasRows( ) method of the DataReader was introduced in Version 1.1 of the .NET Framework. It returns a Boolean value indicating whether the DataReader contains at least one row. There is also ... variables, and constants using System; using System.Configuration; using System.Data; using System.Data.SqlClient; // . . . // Batch query to retrieve the COUNT of records and // all ... forward-only, read-only access to a stream of rows from a data source. It is optimized for performance by reading data directly from a connection to a data source. As a result, there is no way...

Ngày tải lên: 24/12/2013, 05:15

Ngày tải lên: 10/08/2014, 23:20

Ngày tải lên: 11/08/2014, 14:20

... Let's take a closer look at the Databases folder, which contains the databases that are managed by a particular SQL Server installation. For example, my SQL Server installation manages ... in that database. Each SQL Server installation contains the following seven folders shown in the left pane: • Databases Contains tools that allow you to access the databases managed by SQL ... operating system (OS) starts. Once you've started SQL Server, other programs can access the databases managed by that SQL Server installation. Using Enterprise Manager To administer a database,...

Ngày tải lên: 14/12/2013, 13:15

... clicked the Attach Database button. 1. Create a Windows Form. 7.5 Create a Detach/Attach SQL Server Database Dialog Box Situations sometimes arise that require a database to be attached, detached, ... chosen the database, you can reattach the database by clicking on the tab labeled Attach Database. You can then type in the name you want to attach the database as, and click on the Locate File button ... DetachDB and AttachDBWithSingleFile methods to attach and detach a database. Comments You can enhance this routine by allowing for databases that have multiple files to be attached and detached....

Ngày tải lên: 24/12/2013, 06:17

Ngày tải lên: 05/03/2014, 20:20

Ngày tải lên: 27/06/2014, 06:20

Ngày tải lên: 27/06/2014, 12:20

... SqlDataAdapter da = new SqlDataAdapter(sqlText, conn); // Add table mappings. da.TableMappings.Add(" ;Table& quot;, "Orders"); da.TableMappings.Add(" ;Table1 ", "Order Details"); ... Microsoft SQL Server Books Online. The GetSchemaTable( ) method of the DataReader also returns all column lengths. The method returns a DataTable containing column metadata for a DataReader, where ... foreach(DataTable dt in ds.Tables) { schemaInfo.Append(" ;TABLE: " + dt.TableName + Environment.NewLine); // Create the command to retrieve column information. cmd = new SqlCommand("sp_help",...

Ngày tải lên: 24/12/2013, 05:15

Ngày tải lên: 05/09/2013, 08:40

Ngày tải lên: 05/09/2013, 08:40

Ngày tải lên: 05/09/2013, 16:30

... & Materials Science at Washington University in St Louis. He received B.S. in Mechanical Engineering from Shanghai Jiao Tong University in China in 2008 and M.S. in Mechanical Engineering ... VAWT wind farm. The results are given in Table 4. The optimal layout is the same as that of a HAWT as shown in Figure 9. Table 4. Optimization results for VAWT wind farm Optimization Objective ... Conclusion and future work The results shown in section 5 demonstrate that the layout optimization of a wind farm of HAWT using GA gives a uniform grid arrangement similar that obtained by Grady et al....

Ngày tải lên: 05/09/2013, 17:03

... following frameworks: (a) A day in the life on an endangered animal 4. Discussing, creating, and thinking in a group, rather than in a whole class context, can provide a less anxiety-producing ... Cooperative Learning to Integrate Thinking and Information Technology in a Content-Based Writing Lesson Gabriel Tan (Xinmin Secondary School, Singapore) Patrick B Gallo (SEAMEO Regional Language ... steps. 4. After using computers, students can again analyze and share what they have learned and done, as well as what they need to do next. Lesson Plan - Using the Internet for Pre-Writing Using...

Ngày tải lên: 06/09/2013, 05:10

... area, Years and Date are in the Row Labels area, and Units is in the Values area. If you calculate a running total with Date as the base field: • The subtotals for Years are automatically hidden ... each sales manager. In your pivot table, Sales Manager is in the Row Labels area, Category is in the Column Labels area, and Units is in the Values area (see the table at the left in Figure 3-18). ... formula will not be changed if the calculated item’s formula is changed. 3.17. Using Formulas: Creating a Calculated Field Problem In your pivot table, Rep and Product are in the Row Labels area. In...

Ngày tải lên: 09/10/2013, 12:20

... can have many named instances operating at the same time. You can also Run SQL Server 6.5 or 7.0 as the default instance with one or many SQL Server 2000 named instances running at the same ... is this particular type of instance identified? servername servername\instancename SQL Server 2000 Administration in 15 Minutes a Week: Administration Fundamentals Part 1 by Michael Aubert www.2000trainers.com ... Mode authentication you are asked to provide a password for the system administrator (sa) account. This account is available so you can authenticate as a “sysadmin” via SQL Server Authentication....

Ngày tải lên: 17/10/2013, 09:15

... from changing data 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 ... command. SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder. SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder cb = new SqlCommandBuilder(da); ... 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: 17/10/2013, 20:15

... illustrates how to use a SqlConnection object to connect to a SQL Server database */ using System; using System.Data; using System.Data.SqlClient; class MySqlConnection { public static ... using System; using System.Data; using System.Data.SqlClient; class ConnectionPooling { public static void Main() { // create a SqlConnection object to connect to the database, ... static void Main() { // formulate a string containing the details of the // database connection string connectionString = " ;server= localhost;database=Northwind;uid=sa;pwd=sa";...

Ngày tải lên: 07/11/2013, 10:15

... StateChange event. Listing 7.3: STATECHANGE.CS /* StateChange.cs illustrates how to use the StateChange event */ using System; using System.Data; using System.Data.SqlClient; class ... object. You can produce information and error messages using the SQL Server PRINT or RAISERROR statements, which are described in Chapter 4 , "Introduction to Transact- SQL Programming." ... StateChangeEventArgs class. The following example defines a method named StateChangeHandler to handle the StateChange event. You'll notice that the second parameter to this method is a StateChangeEventArgs...

Ngày tải lên: 14/12/2013, 13:15