มีกี่คำตอบเกี่ยวกับ lifehacks ที่ถูกคัดลอกมาจาก lifehacker? ไม่จำเป็นต้องใช้ตารางทั้งหมด
How many answers on lifehacks are copied from lifehacker?.It is not neccessary to use all the tables.
 ReviewTaskStates:  Id [ number]  Name [ text]  Description [ text] 
SELECT DISTINCT (SELECT COUNT(po.Body) FROM Posts AS po WHERE po.PostTypeId = 2) AS ALLANSWERS, (SELECT COUNT(pos.Body) FROM Posts AS pos WHERE pos.PostTypeId = 2 AND pos.Body = '%lifehacker%') AS LHACKERANSWERS FROM Posts AS p