SQLServerCentral.com / SQL Server 2005 General Discussion / SQL Server 2005 / A domain error occurred in Sql server 2005 while updating the data / Latest PostsInstantForum.NET v2.9.0SQLServerCentral.comhttp://www.sqlservercentral.com/Forums/notifications@sqlservercentral.comTue, 24 May 2016 14:37:50 GMT20RE: A domain error occurred in Sql server 2005 while updating the datahttp://www.sqlservercentral.com/Forums/Topic1444977-149-1.aspxI had this problem once before, but I was using a slightly different formula for calculating distances between lat/long pairs. Unfortunately, I no longer work for my employer at the time and don't have the notes I made of this issue to be more specific, so I only vaguely recollect the circumstances. IIRC, I discovered that there were certain input values that would cause the T-SQL COS function to return results just slightly outside the -1 < x < 1 range. This cascaded through the calculation and resulted in an input to the ACOS function that also fell outside the -1 < x < 1 range, which generated the domain error. I corrected the problem by adjusting any results of the COS function that fell outside the range to 1 or -1 as appropriate. The way I finally diagnosed the problem was by running a query that included a column for each individual part of the formula, building up from column to column until I had the whole result. When I ran this query on the dataset that caused the domain error, I narrowed down the query to include only the rows that caused the error. Then, I reran the query, taking columns out of the query (starting from the whole formula and working down to the pieces) one by one until I didn't get the error any more. At that point, I looked at the results and noticed the out-of-range result for the COS function.I've tried a few things to see if I could replicate the out-of-range result for the COS function on my SQL Server 2008R2 instance, but haven't been able to do so.Tue, 23 Apr 2013 10:26:25 GMTwolfkilljA domain error occurred in Sql server 2005 while updating the datahttp://www.sqlservercentral.com/Forums/Topic1444977-149-1.aspxI have created a function like the one belowCreate FUNCTION fn_Calc(@Lat1 Float, @Lng1 Float, @Lat2 Float, @Lng2 Float)RETURNS FloatASBEGINDeclare @x as FloatDeclare @y as FloatDeclare @Distance as FloatSelect @x = (SIN(RADIANS(@Lat1)) * SIN(RADIANS(@Lat2)) + COS(RADIANS(@Lat1)) * COS(RADIANS(@Lat2)) * COS(ABS((RADIANS(@Lng2)) - (RADIANS(@Lng1)))))Select @y = ATAN((SQRT(1-(POWER(@x,2))) / @x))Select @Distance = (1.852 * 60.0 * ((@y / PI()) * 180)) / 1.609344RETURN @DistanceENDI am using the above function to update a column in a table like below:Update test set calc = dbo.fn_Calc( cast(Lat as float), cast(Long as float), dblLat, dblLong) While running the above query I got the error."A domain error occured."What can be causing this error?Thanks,Roshan. NMon, 22 Apr 2013 07:21:00 GMTroshan.nc 74309