/****** Script for SelectTopNRows command from SSMS ******/
 
declare @bx float  
declare @by float  
declare @bh float  
select @bx=a.BaseX,@by=a.BaseY,@bh=a.BaseH from DataSyncPushConnector.dbo.DataSyncStation a  
join [HiMonitorDB].[dbo].DeviceInfo b  
on a.DeviceName=b.DeviceName  
where a.DeviceName='WZ0504'
 
SELECT [GPSIndex]  
,[aDatetime]  
,[X]  
,[Y]  
,[Height]  
,([X]-@bx)*1000 as dx  
,([Y]-@by)*1000 as dy  
,([Height]-@bh)*1000 as dh  
FROM [HiMonitorDB].[dbo].[wz0504_stc] a   where aDatetime \>'2020-04-1'  
order by aDatetime desc