想问一下,这个SQL语句怎么不行!
以下是SQL语句,为什么这样写不行,谢谢! 
 select   count(*)   as   num   from   (select   *   from   orderlist   where   date   between    '2007-6-15   0:01:01 '   and    '2007-7-15   23:59:59 ')   where   country= 'China '
------解决方案--------------------select count(*) as num from (select * from orderlist where date between  '2007-6-15 0:01:01 ' and  '2007-7-15 23:59:59 ') a where country= 'China ' 
 在(SELECT * FROM ... 59:59 ') 后加个别名 如a 应该就行了