Mysql 查询当前数据上一条和下一条的记录

获取当前文件上一条与下一条记录的原理:

上一条的sql语句,从news表里按从大到小的顺序选择一条比当前ID小的新闻;

下一条的sql语句,从news表里按从小到大的顺序选择一条比当前ID大的新闻;

如果ID是主键或者有索引,可以直接查找:

方法一:

# 上一条
select * from table_a where id = (select id from table_a where id < {$id} order by id desc limit 1); 

# 下一条
select * from table_a where id = (select id from table_a where id > {$id} order by id asc limit 1);

 

方法二:

# 上一条
select * from table_a where id = (select max(id) from table_a where id < {$id});

# 下一条
select * from table_a where id = (select min(id) from table_a where id > {$id});

 

posted @ 2022-09-13 16:33  xiexie0812  阅读(1968)  评论(0编辑  收藏  举报