sql问题~~`
 CREATE   TABLE   [A]   ( 
 	[id]   [bigint]   NOT   NULL   , 
 	[id1]   [int]   NULL   , 
       	[id2]   [int]   NULL   , 
 )   ON   [PRIMARY] 
 GO 
 CREATE   TABLE   [B]   ( 
 	[id]   [bigint]   NOT   NULL   , 
 	[id1]   [int]   NULL   , 
                               [id2]   [int]   NULL   , 
 )   ON   [PRIMARY] 
 GO   
 insert      into   A   values( '1 ', '1 ', '0 '   ) 
 insert      into   A   values( '2 ', '2 ', '0 '   ) 
 insert      into   A   values( '3 ', '3 ', '0 '   )   
 insert      into   B   values( '1 ', '1 ', '3 '   ) 
 insert      into   B   values( '2 ', '2 ', '2 '   ) 
 insert      into   B   values( '3 ', '3 ', '1 '   )   
 两表的关系是   A.id=B.id2   
 select   *   from   A   left   join   B   on   A.id=B.id2 
 能得到这个: 
 id	id1	id2                  id	id1            id2 
 ------------------------------------------------- 
 1	1	0	3	3	1 
 2	2	0	2	2	2 
 3	3	0	1	1	3     
 我却想要这样的:   
 id	id1	id2 
 ---------------------- 
 1	1	0         (A表) 
 3	3	1            (B表) 
 2	2	0         (A表) 
 2	2	2            (B表) 
 3	3	0         (A表) 
 1	1	3         (B表)   
 上周没有解决   现在在线求教~   没有分了      实在对不起~   
 drop   table   A 
 drop   table   B 
------解决方案--------------------  select id,id1,id2 from ( 
 select id as f,* ,1 as c from A 
 union  
 select id2 as f,* ,2 as c from B) a 
 order by a.f,c