错误-com.microsoft.sqlserver.jdbc.SQLServerException：关键字附近有语法错误 'BY'

Question

private void UptadeSupplierActionPerformed(java.awt.event.ActionEvent evt) 
{            
    try 
    { 
     Class.forName(driver); 
     Connection con = DriverManager.getConnection(url, user, pass); 
     Statement st = con.createStatement(); 
     ResultSet rec =st.executeQuery("SELECT SupName, SupSurName" + 
      "FROM Suppliers" + 
      "ORDER BY SupName"); 

     while(rec.next()) 
     { 
      System.out.println(rec.getString("SupName") + "," + rec.getString("SupSurName") + "."); 
     } 
     st.close(); 
    } 
    catch(Exception e) 
    { 
     System.out.println("Error-" + e.toString()); 
    } 
}       

Answer 1

您连接你的字符串是这样的：

"SELECT SupName, SupSurName" + "FROM SUPPLIERS"

这将导致到：

SELECT SupName, SupSurNameFROM Suppiers

请注意，您缺少“SupSurName”和“FROM”之间的空格。在字符串之间添加“”（空格），或者在每个字符串的末尾添加一个空格。