SQL语句实现多字段排序

1、SQL语句实现单字段降序、升序排序  select  a.* from a order by a.id;select 默认状况下，通常是升序；关键字升序是asc，降序为desc； 2、SQL语句实现多字段降序 select a.* from a order by a.id desc,a.num desc; 3、SQL语句实现多字段升序 select a.* from a order by a.

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