테이블 3개 조인 > db

테이블 3개 조인시

SELECT A.id,
                H.log_type,
                H.time_history,
                U.name,
                H.ip_addr
FROM history AS H

                INNER JOIN admin AS A

                                ON H.log_id = A.code
                INNER JOIN url AS U
                                ON H.link_history = U.num

WHERE      조건~
ORDER BY H.time_history DESC

SELECT A.id,

                H.log_type,

                H.time_history,

                U.name,

                H.ip_addr
FROM history AS H

                ,admin AS A
                ,url AS U
WHERE H.log_id = A.code
                AND H.link_history = U.num
ORDER BY H.time_history DESC