根据两个字段,新来生成一个字段的问题,急~~~
现在表有这个两个字段内容如下 
 lowprice      highprice 
             0                           50 
             50                        100 
             100                     150 
             150                     200 
             200                     250 
             250                     300 
             300                     999999 
 我想用根据这两个字段,新生成一个字段 
 price(记录如下)   
 50以下 
 50-100 
 100-150 
 150-200 
 200-250 
 250-300 
 300以上     
 请问应怎么定SQL     
------解决方案--------------------Create Table TEST 
 (lowprice	Int, 
  highprice	Int) 
 Insert TEST Select     0,         50 
 Union All Select     50,        100 
 Union All Select     100,       150 
 Union All Select     150,       200 
 Union All Select     200,       250 
 Union All Select     250,       300 
 Union All Select     300,       999999 
 GO 
 Select 
 	(Case When lowprice = 0 Then Rtrim(highprice) + N '以下 ' When highprice = 999999 Then Rtrim(lowprice) + N '以上 ' Else Rtrim(lowprice) +  '- ' + Rtrim(highprice) End) As price 
 From 
 	TEST 
 Go 
 Drop Table TEST 
 --Result 
 /* 
 price 
 50以下 
 50-100 
 100-150 
 150-200 
 200-250 
 250-300 
 300以上 
 */
------解决方案--------------------select case when lowprice  =0 then  ' ' else lowprice  end+case when highprice=999999 then  '以上 ' else  '- '+highprice end+case when lowprice  =0 then  '以下 ' else  ' '  end from 表
------解决方案--------------------select case when lowprice =0 then cast(highprice as  varchar)+ '以下 ' 
 when  lowprice> 0 and lowprice <=300 then cast(lowprice as  varchar)+ '- '+cast(highprice as  varchar) 
 when lowprice> 300 then  '300以上 ' end 
 as col from table
------解决方案--------------------if object_id( 'pubs..tb ') is not null 
    drop table tb 
 go   
 create table tb 
 ( 
 lowprice  int, 
 highprice int 
 )   
 insert into tb(lowprice,highprice) values(0,       50) 
 insert into tb(lowprice,highprice) values(50,       100) 
 insert into tb(lowprice,highprice) values(100,       150) 
 insert into tb(lowprice,highprice) values(150,       200) 
 insert into tb(lowprice,highprice) values(200,       250) 
 insert into tb(lowprice,highprice) values(250,       300) 
 insert into tb(lowprice,highprice) values(300,       999999)   
 select  
    case when lowprice  < 50 then  '50以下 ' 
         when lowprice > = 50 and lowprice  < 300 then cast(lowprice as varchar) +  '- ' + cast(highprice as varchar) 
         when lowprice > = 300 then  '300以上 ' 
    end as 合并后的结果 
 from tb   
 drop table tb   
 合并后的结果                                                         
 ------------ 
 50以下 
 50-100 
 100-150 
 150-200 
 200-250 
 250-300 
 300以上   
 (所影响的行数为 7 行)
------解决方案--------------------借一楼数据 
 Create Table tb