Use Calculated Fields to create a new column that is calculated from other columns or functions and assign the new column to a table in the query.
To create a new column from an existing column or function
Click Edit calculated fields  in the Query Builder toolbar. 
Review the following for additional information:
| 
 New field name  | 
 Click + to add the column to the list of defined fields.  | 
| 
 Defined fields  | 
 Select a column for which you want to define fields from the list.  | 
| 
 Field definition  | 
 Double-click the columns or calculated fields and the appropriate functions or operators to include in the calculated field (i.e., FIRST_NAME + ’r; ’r; + LAST_NAME).  | 
| 
 Attach to table  | 
 Select the table that you want to attach to the calculated field.  |