บอกฉันหน่อยว่าช่วงหินแดงไม่จำเป็นต้องใช้โต๊ะทั้งหมด
Tell me the period for red rockIt is not neccessary to use all the tables.
 table_31584:  "Camp" [ text]  "Place" [ text]  "Province" [ text]  "Location" [ text]  "Period" [ text] 
SELECT "Period" FROM table_31584 WHERE "Place" = 'red rock'