实例分析Sybase数据库Varchar类型的排序 ―

1> select * from idid order by 1
2> go
 id
 ----
 1
 10
 11
 2
 20

(5 rows affected)
1> select * from idid order by convert(integer,id)
2> go
 id
 ----
 1
 2
 10
 11
 20

(5 rows affected)
1> 
数据挖掘实验室