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});
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本文来自博客园,作者:xiexie0812,转载请注明原文链接:https://www.cnblogs.com/mask-xiexie/p/16689648.html