sqlserver中，有个字段有的全是数字，有的前面是数字后面是字母，比如：1，2，3，4，5，3A，1A，2A，排序后变成1，1A,2，2A,3，3A,4，5，如何实现？
------解决方案--------------------
----------------------------------------------------------------
-- Author :fredrickhu(小F，向高手学习)
-- Date :2013-11-21 10:47:56
-- Verstion:
-- Microsoft SQL Server 2012 - 11.0.2100.60 (X64)
-- Feb 10 2012 19:39:15
-- Copyright (c) Microsoft Corporation
-- Enterprise Edition: Core-based Licensing (64-bit) on Windows NT 6.1 <X64> (Build 7601: Service Pack 1)
--
----------------------------------------------------------------
--> 测试数据：[tb]
if object_id('[tb]') is not null drop table [tb]
go
create table [tb]([col] varchar(4))
insert [tb]
select '101A' union all
select '1' union all
select '1A' union all
select '2' union all
select '3' union all
select '100' union all
select '101' union all
select '10' union all
select '10A' union all
select '11'
--------------开始查询--------------------------
select * from [tb] ORDER BY CASE WHEN PATINDEX('%[A-Z a-z]%',col)>0 THEN CAST(LEFT(col,PATINDEX('%[A-Z a-z]%',col)-1) AS INT) ELSE cast(col AS int) END ,SUBSTRING(col,PATINDEX('%[A-Z a-z]%',col),LEN(col))
----------------结果----------------------------
/*
1
1A
2
3
10
10A
11
100
101
101A
*/
转换成数字就OK了