Sample Null Query
To identify all locations for your company that have no work centers associated with them, use a query like this:
- Open the Locations form.
- Press .
- On the Additional Criteria tab, in the 
	 three query criteria fields: 
	- From the first list, select WC (for "Work Center").
- From the operator list, select = (Equals).
- In the adjacent value field, specify null.
 
- Click .
- Click . 
	All records that meet the specified criteria are retrieved and displayed in the Results grid. 
- To return these records to the parent multiview form (Locations), click .
- When prompted for confirmation, click .
Note:  When you click 
 , the system returns all retrieved records 
 to the parent form, replacing whatever was previously displayed in that 
 form. You cannot pick and choose which records to return.