declare @orcount	int					-- 满足条件的订单数量;
declare @orderNum	nvarchar(50)		-- 订单号;
declare @orderSec   nvarchar(50)		-- 景点名;
declare @orderDate	nvarchar(50)		-- 预约日期;
declare @erroDate	nvarchar(50)		-- 错误的日期;
set @erroDate = '2016-16'
--查询出日期;
select @orcount = count(id) from [db].[dbo].[dindanjd] where [bookingdate] = @erroDate
while @orcount > 0
begin
select top 1 percent @orderNum=id, @orderSec = [name] from [db].[dbo].[dindanjd] where [bookingdate] = @erroDate
select @orderDate = [bookingdate] from [db2].[dbo].[dindanjd] where id = @orderNum and [name] = @orderSec
	update [db].[dbo].[dindanjd] set [bookingdate] = @orderDate where id = @orderNum and [name] = @orderSec
set @orcount = @orcount-1
end