แผนภูมินี้แสดงโมเดล 25 กี่ครั้ง ไม่จำเป็นต้องใช้ตารางทั้งหมด
what are the number of times model 25 is listed on this chart ?It is not neccessary to use all the tables.
 table_203_136:  id [ number]  "year" [ number]  "name" [ text]  "processor" [ text]  "bus" [ text]  "case" [ text]  "notes" [ text] 
SELECT COUNT(*) FROM table_203_136 WHERE "name" = 'model 25'