怎樣將兩個行數不同結構不一樣的表合併起來,行數不足的表補空?
比如表A 
 n1   n2   n3   n4 
 1      2      3      4 
 2      3      4      5 
 a      b      c      d 
 表B 
 f1   f2   f3 
 2      e      f 
 w      f      g 
 合併後: 
 n1   n2   n3   n4   f1   f2   f3 
 1      2      3      4      2      e      f 
 2      3      4      5      w      f      g 
 a      b      c      d 
 用sql查詢實現,不准用臨時表
------解决方案--------------------UP.......
------解决方案--------------------declare @a table(n1 varchar(20), n2 varchar(20), n3 varchar(20), n4 varchar(20)) 
 insert @a select  '1 ',   '2 ',  '3 ',  '4 ' 
 union all select  '2 '  , '2 '  , '3 '  , '4 ' 
 union all select  'a '  , 'b '  , 'c '  , 'd '     
 declare @b table(f1 varchar(20), f2  varchar(20), f3 varchar(20)) 
 insert @b select  '2 ',   'e ',   'f ' 
 union all select  'w '  , 'f '  , 'g '   
 select n1,n2,n3,n4,f1,f2,f3 from 
 ( 
 select *,id=(select count(1) from (select *,checksum(*) x from @a)bb where  x <=aa.x) from (select *,checksum(*) x from @a) aa  
 )xx 
 left join 
 ( 
 select *,id=(select count(1) from (select *,checksum(*) x from @b)bb where  x <=aa.x) from (select *,checksum(*) x from @b) aa  
 )yy 
 on xx.id=yy.id