기본 쿼리가 잘못된 이유는 무엇입니까? . .

Question

//하라생查询
              공개 함수 쿼리(){
               $sql="SELECT 'name','email' FROM 'student' WHERE 'id' IN (4,7,8)";
               dump(Db::query ($sql));
              }

Answer 1

SELECT id,user_id FROM tp_cart WHERE id IN ('41','42')

SELECT id,user_id FROM tp_cart WHERE id IN ('41','42')

SELECT 'name','email' FROM 'student' WHERE 'id' IN (4,7,8)

注意符号