方法一：group by
mysql> select count(*) as num,aid from comment group by aid order by num;
+-----+-----+
| num | aid |
+-----+-----+
| 2 | 10 |
| 3 | 9 |
+-----+-----+
2 rows in set
mysql>
方法二：在文章表中新建一个字段保存评论数量
方法一：group by
mysql> select count(*) as num,aid from comment group by aid order by num;
+-----+-----+
| num | aid |
+-----+-----+
| 2 | 10 |
| 3 | 9 |
+-----+-----+
2 rows in set
mysql>
方法二：在文章表中新建一个字段保存评论数量
本文标题：文章按照评论数数量排序
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