select BOM from Stpo

Hello,

I would like select from the table STPO the Components from the bill of material. But I need the STLAL and STLAN too.

In the table STKO are the fields STLAL and STKOZ .

In the table STPO is a field STPOZ. Its the same like STKOZ. But I dont know how I select the positions, because in STKOZ is just the number of the first Position. And in STPOZ the rest of the counting number. Is there a other solution how I get just the positions of the BOM for a STLAL?