วันแรกคือ ?ไม่จำเป็นต้องใช้ตารางทั้งหมด
the first date is ?It is not neccessary to use all the tables.
 table_204_539:  id [ number]  "date" [ text]  "name" [ text]  "fee" [ text] 
SELECT "date" FROM table_204_539 ORDER BY "date" LIMIT 1