How to know the most queried item? (please help me)

I'm doing a library's bookkeeping.
In a report I wanna know what's the book more queried or the most looked. But I dont know how to put the query in SQL.
can you please tell me?
the columns in the table are:
books varchar2(30)
author varchar2 (30)
(THERE's NOT any Book_id) or something.
please help me.

That's not a Forms question. Please direct your question to the appropriate forum.
However, using those columns, there is no way to tell the book most queried, unless you store that information yourself, or use some sort of auditing in the database.
Regards,
Robin Zimmermann
Forms Product Management

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Hello,
This is my full listing program:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;
import javax.swing.event.*;
import javax.swing.border.*;
public class PortGUI extends JFrame
     private     JButton btOk;
     private JButton btCancel;
     private     JButton btReply;
     private     JLabel lblServIP;
     private     JLabel lblAuth;
     private JLabel lblThrd;
     private JLabel lblAcc;
     private JLabel lblMax;
     private JLabel lblAuthent;
     private JLabel lblAdm;
     private JLabel lblReplServ;
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     private JCheckBox chkEnbDbg;
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          lblServIP.setLabelFor(     fldServIP );
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          fldAuth.setBounds( 600, 30, 50, 25 );
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          lblThrd.setBounds( 20, 60, 100, 25 );
          lblThrd.setLabelFor(fldThrd);
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          final JTextField fldAcc =     new     JTextField();
          fldAcc.setBounds( 600, 60, 50, 25 );
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          lblAcc = new JLabel( "Incoming Radius Accounting Port" );
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          lblAcc.setLabelFor(     fldAcc );
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          fldMax.setBounds( 160, 90, 50, 25 );
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          lblMax = new JLabel( "Maximum Consoles" );
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          lblMax.setLabelFor(     fldMax );
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          String[] AuthStrings = {"Local Server", "Proxy Server", "Local and Proxy"};
          JComboBox AuthList = new JComboBox(AuthStrings);
          AuthList.setSelectedIndex(2);
          AuthList.setSelectedItem(null);
          AuthList.setBounds(450, 90, 200, 25);
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          lblAuthent.setBounds( 350, 90, 100, 25 );
          lblAuthent.setLabelFor(     AuthList);
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          final JTextField fldAdm =     new     JTextField();
          fldAdm.setBounds( 160, 120, 50, 25 );
          fldAdm.setFocusAccelerator( 'c' );
          panelsett.add( fldAdm );
          lblAdm = new JLabel( "Admin TCP Port" );
          lblAdm.setBounds( 20, 120, 150, 25 );
          lblAdm.setLabelFor(     fldAdm );
          panelsett.add(lblAdm);
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chkUsers.setSelected(false);
panelsett.add(chkUsers);
          final JTextField fldReplServ =     new     JTextField();
          fldReplServ.setBounds( 160, 150, 100, 25 );
          fldReplServ.setFocusAccelerator( 'c' );
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          lblReplServ.setBounds( 20, 150, 200, 25 );
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chkEnbDbg.setBounds(350, 150, 250, 25);
chkEnbDbg.setMnemonic('n');
chkEnbDbg.setSelected(false);
panelsett.add(chkEnbDbg);
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panelsett.setBorder(title);
topPanel.add(panelsett);
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          btOk = new JButton( "OK" );
          btOk.setBorder(BorderFactory.createRaisedBevelBorder());
          btOk.setBounds( 170, 270, 100, 35 );
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          topPanel.add(btOk);
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          btReply.setBorder(BorderFactory.createRaisedBevelBorder());
          btReply.setBounds( 300, 270, 100, 35 );
          topPanel.add(btReply);
          btCancel = new JButton( "Cancel" );
          btCancel.setBorder(BorderFactory.createRaisedBevelBorder());
          btCancel.setBounds( 420, 270, 100, 35 );
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public void actionPerformed(ActionEvent e)
     System.exit(0);
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               public void     insertUpdate( DocumentEvent event )
                    String     sString     = fldServIP.getText();
                    try
                         int     iValue = Integer.parseInt( sString );
                         btOk.setEnabled( true );
                    catch( NumberFormatException e )
                         if(     fldServIP.getText().length() == 4 )
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"Please try again",
"Error Message",
JOptionPane.ERROR_MESSAGE);
public void removeUpdate( DocumentEvent event )
     // Prevent the user     from entering a blank field
     if(     fldServIP.getText().length() == 0 )
     btOk.setEnabled( false );
     else
          // Do the same error checking as insertUpdate()
          insertUpdate( event );
public void changedUpdate( DocumentEvent event )
     // Nothing to do here
          fldAuth.getDocument().addDocumentListener(new DocumentListener()
               public void     insertUpdate( DocumentEvent event )
                    String     sString     = fldAuth.getText();
                    try
                         int     iValue = Integer.parseInt( sString );
                         btOk.setEnabled( true );
                    catch( NumberFormatException e )
                         if(     fldAuth.getText().length() == 4 )
               JOptionPane.showMessageDialog(pnlErr,
"Please try again",
"Error Message",
JOptionPane.ERROR_MESSAGE);
public void removeUpdate( DocumentEvent event )
     // Prevent the user     from entering a blank field
     if(     fldAuth.getText().length() == 0 )
     btOk.setEnabled( false );
     else
          // Do the same error checking as insertUpdate()
          insertUpdate( event );
public void changedUpdate( DocumentEvent event )
     // Nothing to do here
     fldThrd.getDocument().addDocumentListener(new DocumentListener()
               public void     insertUpdate( DocumentEvent event )
                    String     sString     = fldThrd.getText();
                    try
                         int     iValue = Integer.parseInt( sString );
                         btOk.setEnabled( true );
                    catch( NumberFormatException e )
                         if(     fldThrd.getText().length() == 4 )
               JOptionPane.showMessageDialog(pnlErr,
"Please try again",
"Error Message",
JOptionPane.ERROR_MESSAGE);
public void removeUpdate( DocumentEvent event )
     // Prevent the user     from entering a blank field
     if(     fldThrd.getText().length() == 0 )
     btOk.setEnabled( false );
     else
          // Do the same error checking as insertUpdate()
          insertUpdate( event );
public void changedUpdate( DocumentEvent event )
     // Nothing to do here
fldAcc.getDocument().addDocumentListener(new DocumentListener()
               public void     insertUpdate( DocumentEvent event )
                    String     sString     = fldAcc.getText();
                    try
                         int     iValue = Integer.parseInt( sString );
                         btOk.setEnabled( true );
                    catch( NumberFormatException e )
                         if(     fldAcc.getText().length() == 4 )
               JOptionPane.showMessageDialog(pnlErr,
"Please try again",
"Error Message",
JOptionPane.ERROR_MESSAGE);
public void removeUpdate( DocumentEvent event )
     // Prevent the user     from entering a blank field
     if(     fldAcc.getText().length() == 0 )
     btOk.setEnabled( false );
     else
          // Do the same error checking as insertUpdate()
          insertUpdate( event );
public void changedUpdate( DocumentEvent event )
     // Nothing to do here
fldMax.getDocument().addDocumentListener(new DocumentListener()
               public void     insertUpdate( DocumentEvent event )
                    String     sString     = fldMax.getText();
                    try
                         int     iValue = Integer.parseInt( sString );
                         btOk.setEnabled( true );
                    catch( NumberFormatException e )
                         if(     fldMax.getText().length() == 4 )
               JOptionPane.showMessageDialog(pnlErr,
"Please try again",
"Error Message",
JOptionPane.ERROR_MESSAGE);
public void removeUpdate( DocumentEvent event )
     // Prevent the user     from entering a blank field
     if(     fldMax.getText().length() == 0 )
     btOk.setEnabled( false );
     else
          // Do the same error checking as insertUpdate()
          insertUpdate( event );
public void changedUpdate( DocumentEvent event )
     // Nothing to do here
fldAdm.getDocument().addDocumentListener(new DocumentListener()
               public void     insertUpdate( DocumentEvent event )
                    String     sString     = fldAdm.getText();
                    try
                         int     iValue = Integer.parseInt( sString );
                         btOk.setEnabled( true );
                    catch( NumberFormatException e )
                         if(     fldAdm.getText().length() == 4 )
               JOptionPane.showMessageDialog(pnlErr,
"Please try again",
"Error Message",
JOptionPane.ERROR_MESSAGE);
public void removeUpdate( DocumentEvent event )
     // Prevent the user     from entering a blank field
     if(     fldAdm.getText().length() == 0 )
     btOk.setEnabled( false );
     else
          // Do the same error checking as insertUpdate()
          insertUpdate( event );
public void changedUpdate( DocumentEvent event )
     // Nothing to do here
fldReplServ.getDocument().addDocumentListener(new DocumentListener()
               public void     insertUpdate( DocumentEvent event )
                    String     sString     = fldReplServ.getText();
                    try
                         int     iValue = Integer.parseInt( sString );
                         btOk.setEnabled( true );
                    catch( NumberFormatException e )
                         if(     fldReplServ.getText().length() == 4 )
               JOptionPane.showMessageDialog(pnlErr,
"Please try again",
"Error Message",
JOptionPane.ERROR_MESSAGE);
public void removeUpdate( DocumentEvent event )
     // Prevent the user     from entering a blank field
     if(     fldReplServ.getText().length() == 0 )
     btOk.setEnabled( false );
     else
          // Do the same error checking as insertUpdate()
          insertUpdate( event );
public void changedUpdate( DocumentEvent event )
     // Nothing to do here
     public static void main(String[] args)
          //int windowWidth, windowHeight;
          int windowWidth = 700;
int windowHeight = 400;
          PortGUI window = new PortGUI();
          window.setTitle("");
          Dimension windowSize = window.getSize();
          Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
          window.setSize(windowWidth, windowHeight);
          window.setLocation((screenSize.width - windowWidth) / 2, (screenSize.height - windowHeight) / 2);
          window.setVisible(true);
          window.setResizable(false);
On that listing program, my problem is in field document listener, that is:
fldThrd.getDocument().addDocumentListener(new DocumentListener()
               public void     insertUpdate( DocumentEvent event )
                    String     sString     = fldThrd.getText();
                    try
                         int     iValue = Integer.parseInt( sString );
                         btOk.setEnabled( true );
                    catch( NumberFormatException e )
                         if(     fldThrd.getText().length() == 4 )
               JOptionPane.showMessageDialog(pnlErr,
"Please try again",
"Error Message",
JOptionPane.ERROR_MESSAGE);
if I execute this program, the textfield can only receive integer input. If input is string til 4 times, the dialog panel will display error message. After that, textfield must be empty (delete automatically).
I want to ask you about how I can emptying that textfield automatically after the dialog panel is appear?
Please help me to get out from my problem.
Thank's for your help,
har

Hi,
To empty the text file, use the method setText("").
eg. fldServIP.setText("");
fldServIP is one of your textfield. So whereever you are showing the dialog box, use setText("") for the corresponding textfields.
All the best

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