SQL Server
先从想要的数据处理加上Row_number()来为数据的row加上一个RowNum作为有多少条数据,然后再用BETWEEN来分隔
with t1 as (select * , Row_number() OVER (ORDER BY userId DESC) AS RowNum from users)
SELECT *FROM t1 WHERE RowNum BETWEEN ((page-1)*rows+1) AND (page*rows)
Oralce数据库
从数据库表中第M条记录开始检索N条记录
SELECT *
FROM (SELECT ROWNUM r,t1.* From 表名称 t1 where rownum < M + N) t2
where t2.r >= M
例如从表Sys_option(主键为sys_id)中从10条记录还是检索20条记录,语句如下:
SELECT *
FROM (SELECT ROWNUM R,t1.* From Sys_option where rownum < 30 ) t2
Where t2.R >= 10
MySQL数据库
My SQL数据库最简单,是利用mySQL的LIMIT函数,LIMIT [offset,] rows从数据库表中M条记录开始检索N条记录的语句为:
SELECT * FROM 表名称 LIMIT M,N
例如从表Sys_option(主键为sys_id)中从10条记录还是检索20条记录,语句如下:
select * from sys_option limit 10,20