MySQL in查询排序问题

SQL: select * from table where id IN (3,8,9,1,2,5,7,6);

这样的情况取出来后，其实，id还是按1,2,3,4,5,6,7,8,9,排序的，但如果我们真要按IN里面的顺序排序怎么办？SQL能不能完成？是否需要取回来后再foreach一下？其实mysql就有这个方法;

有3种方法可以解决：

sql1: SELECT * FROM on_goods WHERE id IN (3,8,9,1,2,5,7,6) order by field(id,3,8,9,1,2,5,7,6);

sql2: SELECT * FROM on_goods WHERE id IN(3,8,9,1,2,5,7,6) order by find_in_set(id,'3,8,9,1,2,5,7,6');

sql3: SELECT * FROM on_goods WHERE id IN(3,8,9,1,2,5,7,6) order by substring_index('3,8,9,1,2,5,7,6',id,1);

出来的顺序就是指定的顺序了