ผลรวมของม้วนกับพื้นที่ไวคาก้าเป็นเท่าใด ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
What is the sum of the roll with an area of Waikaka?It is not neccessary to use all the tables.
 table_69788:  "Name" [ text]  "Years" [ text]  "Gender" [ text]  "Area" [ text]  "Authority" [ text]  "Decile" [ real]  "Roll" [ real] 
SELECT SUM("Roll") FROM table_69788 WHERE "Area" = 'waikaka'