จอห์นอธิบายกี่เหตุการณ์ ?ไม่จำเป็นต้องใช้ตารางทั้งหมด
how many events does john describe ?It is not neccessary to use all the tables.
 table_203_505:  id [ number]  "number" [ number]  "event" [ text]  "type" [ text]  "matthew" [ text]  "mark" [ text]  "luke" [ text]  "john" [ text] 
SELECT COUNT("event") FROM table_203_505 WHERE NOT "john" IS NULL