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The following method, _demoExecute(), takes a connection object and a SQL statement and executes the statement using the execute() method of the Statement interface. It can be invoked for a query statement as well as a nonquery DML statement, such as an insert, as illustrated in the main() program: // demonstrate the execute() method of the Statement interface private static void _demoExecute( Connection conn, String sqlStmt ) throws SQLException { ResultSet rset = null; Statement stmt = null; try { stmt = conn.createStatement(); // execute the query After creating the statement, we execute it and get the boolean value that tells us if the statement was a query or a not. boolean isQuery = stmt.execute( sqlStmt ); If it is a query, we get the ResultSet and print the results. In this example, we have to know the column type and position (or name) of the query to retrieve the results. Notice how we use the column names (instead of column s positional index) to get the results this time. // if it is a query, get the result set and print the results if( isQuery ) { rset = stmt.getResultSet(); while (rset.next()) { int empNo = rset.getInt ( "empno" ); String empName = rset.getString ( "ename" ); System.out.println( empNo + "," + empName ); } } If it is not a query, we assume it is an insert, update, or delete and get the number of rows affected using the getUpdateCount() method. We also close the statement and result set at the end of the method: else { // we assume it is an insert, update, or delete statement int numOfRowsAffected = stmt.getUpdateCount(); System.out.println( "Number of rows affected by execute() = " + numOfRowsAffected ); } } finally vb.net code 39 reader VB . NET Image: Example to Read Code 39 Barcode with VB . NET Codes in ...
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Free to download .NET, C#, VB . NET barcode reader app for Code 39 ; C# Code 39 recognition SDK; VB . NET Code 39 recognition SDK. The Categories tab displays a tree of all the existing categories to the left of the tab page. To the right of the tab page you can mark the selected category as requiring proofreading and having a moderator as well as a discussion forum by checking the respective boxes. You can use the right mouse button and the pop-up menu or the Add Category button to create a category under the one selected, and the Articles button to associate and create articles associated with the category. This method is virtual, allowing you to add extra steps to the process if needed. Additionally, this means you can override the behavior to implement field-level dirty tracking if desired. upc-a barcode font for word, birt data matrix, data matrix code in word erstellen, birt pdf 417, word 2013 code 39, birt qr code download vb.net code 39 reader read code 39 barcode with vb . net - Stack Overflow
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NET Code 39 Barcode Reader , Reading Code - 39 barcode images in .NET, C#, VB . NET , ASP.NET applications. Now that you ve learned about the Statement interface, let s look at why it isn t a good idea to use it in your code The basic problem with the Statement interface is that it accepts only literal parameters In the preceding example, the value of employee number would be hard-coded into the query each time, and every variation of the query even though it may vary only by the value of supplied employee number would be treated as a brand-new query by Oracle and would be hard-parsed For example, the query select ename from emp where empno = 1234 is treated as distinct from the query select ename from emp where empno = 4321, whereas both queries are the same except for the user input of the employee number As already discussed, this is something to avoid. vb.net code 39 reader Visual Studio . NET Barcode Scanner Library API for . NET Barcode ...
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