
如何在MySQL中查询当前数据的上下记录?
如果ID是主键或者有索引,可以直接查找:
方法一,查询上一条记录的SQL语句(如果有其他的查询条件记得加上other_conditions以免出现不必要的错误):1select * from table_a where id = (select id from table_a where id < {$id} [and other_conditions] order by id desc limit 1) [and other_conditions];查询下一条记录的SQL语句(如果有其他的查询条件记得加上other_conditions以免出现不必要的错误):1select * from table_a where id = (select id from table_a where id > {$id} [and other_conditions] order by id asc limit 1) [and other_conditions];
方法二,查询上一条记录的SQL语句((如果有其他的查询条件记得加上other_conditions以免出现不必要的错误))1select * from table_a where id = (select <a href="http://www.baidu.com/swd=max&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1d9PjIP1Rvuy7hn1NBrAuW0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6K1TL0qnfK1TL0z5HD0IgF_5y9YIZ0lQzqlpAbmyt8mh7GuZR8mvqVQL7dugPYpyq8Q1csnHDkrj6srj04rj64PH0LPj6" target="_blank" class="baidu-highlight">max</a>(id) from table_a where id < {$id} [and other_conditions]) [and other_conditions];
查询下一条记录的SQL语句(如果有其他的查询条件记得加上other_conditions以免出现不必要的错误):1select * from table_a where id = (select min(id) from table_a where id > {$id} [and other_conditions]) [and other_conditions]。