oracle怎么實(shí)現(xiàn)分頁 oracle數(shù)據(jù)庫怎么實(shí)現(xiàn)分頁?
oracle數(shù)據(jù)庫怎么實(shí)現(xiàn)分頁?您好:oracle查詢分頁可分為兩種情況,一種使用的是rownum ,另外一種則是使用 row_number() over(order by column_name d
oracle數(shù)據(jù)庫怎么實(shí)現(xiàn)分頁?
您好:oracle查詢分頁可分為兩種情況,一種使用的是rownum ,另外一種則是使用 row_number() over(order by column_name desc)。1.使用rownum分頁查詢,可用以下方式:select t2.* from (select t1.*,rownum as rn from table_name t1 where 1=1 and rownum <= page * page_size) t2 where t2.rn > (page - 1) * page_size2.使用 row_number() over() 分頁查詢select t2.* from (select t1.*,row_number() over(order by column_name desc) as rn from table_name t1 where 1=1 )t2 where t2.rn > (page-1)* page_size and t2.rn <= page * page_size這種方式,也是可以分頁的。希望能幫助您!
oracle為什么做個(gè)分頁關(guān)鍵字?
分頁的宗旨是控制查詢出來的數(shù)據(jù)個(gè)數(shù),下面這條語句對(duì)于Oracle分頁已經(jīng)足夠了。
(注:該語句只能用于Oracle)
SELECT * FROM (SELECT temp.*, ROWNUM RN FROM (SELECT * FROM USERS ORDER BY ID DESC) temp) WHERE RN > 0 AND RN <= 10
SELECT *
FROM (SELECT AA.*, ROWNUM RN
FROM (SELECT * FROM USERS ORDER BY ID DESC) AA)
WHERE RN > 0 AND RN <= 10