oracle分頁查詢語句 oracle數(shù)據(jù)庫怎么實現(xiàn)分頁?
oracle數(shù)據(jù)庫怎么實現(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!
jdbctemplate怎么實現(xiàn)oracle分頁查詢?
sql語句如下:
分頁1
SELECT *
FROM (Select ROWNUM AS ROWNO, T.*
from 表名 T(別名)
where 表字段 between to_date("20060501", "yyyymmdd") and to_date("20060731", "yyyymmdd")
AND ROWNUM
WHERE TABLE_ALIAS.ROWNO >= 10
經(jīng)過測試,此方法成本最低,只嵌套一層,速度最快,即使查詢的數(shù)據(jù)量再大,也幾乎不受影響,速度依然.
分頁2:
SELECT *
FROM (SELECT TT.*, ROWNUM AS ROWNO
FROM (Select t.*
from 表名 T(別名)
where flight_date between to_date("20060501", "yyyymmdd") and
to_date("20060531", "yyyymmdd")
ORDER BY FACT_UP_TIME, flight_no) TT(別名二)
WHERE ROWNUM
where TABLE_ALIAS.rowno >= 10
經(jīng)過測試,此方法隨著查詢范圍的擴大,速度也會越來越慢,