Запрос №3

App/Requests/sql/zapros3.sql

@@ -0,0 +1,9 @@
+SELECT w.date_of_delivery AS 'Дата поставки', 
+	   name AS 'Поставщик',
+       wl.count AS 'Количество', 
+       wl.price * wl.count AS 'Общая сумма'
+FROM waybill w
+JOIN waybill_lines wl USING(waybill_id)
+JOIN workpiece wp USING(work_id)
+JOIN sellers USING(sel_id)
+WHERE material = '${material}';