1.支持嵌套查询 select * from t order by a1 desc limit 10 嵌套需要给子查询一个别名,例如select * from (select * from t order by a1 desc limit 10) t1后面那个t1不能少
SELECT * Top10 FROM b1 ORDER BY a1 DESC
select a1 Top10from b1order by a1 desc
select * from b1 order by a1 desc limit 10
ORDER BY `id` ASC