我成功地删除了一个整数,但是当我试图将它变为STRING时它会说
“where子句中的未知列itemtodelete但是我的ITEMTODELETE是在数据库中声明的STRING不是一个整数它不删除一个STRING多少？
“where子句中的未知列itemtodelete但是我的ITEMTODELETE是在数据库中声明的STRING不是一个整数它不删除一个STRING多少？
下面是我的代码：
private void DeleteButtonActionPerformed(java.awt.event.ActionEvent evt) {
int del = (prompt):
if (del == JOptionPane.YES_OPTION){
DelCurRec();
}
}
public void DelCurRec() {
String id = field.getText();
String sql = "DELETE FROM inventory WHERE ItemCode = "+id+" ";
try {
Class.forName(connectio);
} catch (Exception e) {
JOptionPane.showMessageDialog(null,""+e.getMessage(),"JDBC Driver Error",JOptionPane.WARNING_MESSAGE);
}
Statement stmt = null;
Connection con = null;
//Creates connection to database
try {
con = DriverManager.getConnection("Connection");
stmt = con.createStatement();
} catch (Exception e) {
JOptionPane.showMessageDialog(null,"Connection Error",JOptionPane.WARNING_MESSAGE);
}
//Execute the sql statment for deleting records
try {
stmt.executeUpdate(sql);
//This closes the connection to the database
con.close();
//This closes the dialog
JOptionPane.showMessageDialog(null,"Deleted Succesfully","Delete Successful",JOptionPane.WARNING_MESSAGE);
} catch (Exception e) {
JOptionPane.showMessageDialog(null,"Communication Error",JOptionPane.WARNING_MESSAGE);
}
}
