จำนวนเกมที่มีอยู่ใน PlayStation Portable มีจำนวนเกมเท่าใด ?ไม่จำเป็นต้องใช้ทุกโต๊ะ
what was the number of games available on playstation portable ?It is not neccessary to use all the tables.
 table_203_633:  id [ number]  "title" [ text]  "year" [ number]  "platform" [ text]  "developer" [ text]  "publisher" [ text] 
SELECT COUNT("title") FROM table_203_633 WHERE "platform" = 'playstation portable'