Get the Number Of Rows in ResultSet

From Java Example Source Code

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[edit] Java Source Code

• Package: example.jdbc.resultsetscrollable
• File: GetNumberOfRowsScrollableResultSet_MySQL.java

package example.jdbc.resultsetscrollable;
 
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
 
public class GetNumberOfRowsScrollableResultSet_MySQL {
 
    public static Connection getConnection() throws Exception {
	String driver = "org.gjt.mm.mysql.Driver";
	String url = "jdbc:mysql://localhost/databaseName";
	String username = "root";
	String password = "root";
	Class.forName(driver);
	Connection conn = DriverManager.getConnection(url, username, password);
	return conn;
    }
 
    public static void main(String[] args) {
	Connection conn = null;
	Statement stmt = null;
	ResultSet rs = null;
	try {
	    conn = getConnection();
	    String query = "select id from employees";
	    stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
 
	    rs = stmt.executeQuery(query);
	    // extract data from the ResultSet scroll from top
	    while (rs.next()) {
		String id = rs.getString(1);
		System.out.println("id=" + id);
	    }
	    // move to the end of the result set
	    rs.last();
	    // get the row number of the last row which is also the row count
	    int rowCount = rs.getRow();
	    System.out.println("rowCount=" + rowCount);
	} catch (Exception e) {
	    e.printStackTrace();
	} finally {
	    try {
		rs.close();
		stmt.close();
		conn.close();
	    } catch (SQLException e) {
		e.printStackTrace();
	    }
	}
    }
}

[edit] What Result You Can Get

Coming soon...

[edit] Required External Libraries and/or Files for this Java Example

In order to run this Java example, one of the following libraries may be required: In order to run this example program, one of the following libraries may be required:

• MySQL JDBC driver. You can download it from MySQL Connector/J — for connecting to MySQL from Java
• Oracle JDBC driver. You can download it from JDBC driver for Oracle.
• MSSQL JDBC driver. There are several vendors provide JDBC driver for MSSQL, you should chose one of them:
  • jTDS - SQL Server and Sybase JDBC driver. It is an open source JDBC 3.0 Type 4 driver for Microsoft SQL Server (6.5, 7.0, 2000 and 2005) and Sybase. jTDS is the fastest JDBC driver for MS SQL Server and is a complete implementation of the JDBC spec. You can download it from jTDS - SQL Server and Sybase JDBC driver
  • MSSQL JDBC driver from Microsoft.
    • JDBC driver for MSSQL 2000. You can download it from SQL Server 2000 Driver for JDBC Service Pack 3
    • JDBC driver for MSSQL 2005. You can download it from Microsoft SQL Server 2005 JDBC Driver 1.2
• PostgreSQL JDBC driver. You can download it from PostgreSQL JDBC driver. It is a pure Java (Type IV) implementation.
• HSQLDB JDBC Driver. HSQLDB is the leading SQL relational database engine written in Java. It has a JDBC driver and supports a rich subset of ANSI-92 SQL plus SQL 99 and 2003 enhancements. You can download it from hsqldb.

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[edit] Question & Answer

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