更新查询2005

我有一个表叫员工更新查询2005

empID name startdate  Middate  DEptID 
1  kumar 2011-04-30  2005-09-13 1 
2  kiran 2011-05-23  2006-08-13 1 
3  kishor 2008-04-13  2009-04-23 6 
4  anu 2009-09-03  2000-06-13 1 
5  priya 2010-05-04  2010-04-13 6 
6  sweth 2011-07-13  2007-12-16 1 
7  manu 2011-08-15  2006-12-07 6

有什么办法，我可以更新此表，以便 STARTDATE = Middate所有员工

empID name startdate  Middate  DEptID 
1  kumar 2005-09-13  2005-09-13 1 
2  kiran 2006-08-13  2006-08-13 1 
3  kishor 2009-04-23  2009-04-23 6 
4  anu 2000-06-13  2000-06-13 1 
5  priya 2010-04-13  2010-04-13 6 
6  sweth 2007-12-16  2007-12-16 1 
7  manu 2006-12-07  2006-12-07 6

请让我知道我可以解决这个

感谢
王子

来源

2011-04-13 happysmile

update employees set startdate=middate

来源

2011-04-13 06:39:49 Blorgbeard

更新查询2005

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