How to validated geography polygon in SQL server 2008?

Question

In the SQL Server 2012 there is methods to validate geography \'.IsValidDetailed()\' and to change orientation \'.ReorientObject (geography)\'.

I am working with SQ

Answer 1

I found solution, SQL Server Saptial Tools

http://sqlspatialtools.codeplex.com/

Followings are the methods solved my problem.

IsValidGeographyFromText(string inputWKT, int srid)

Check if an input WKT can represent a valid geography. This function requires that the WTK coordinate values are longitude/latitude values, in that order and that a valid geography SRID value is supplied. This function will not throw an exception even in edge conditions (i.e. longitude/latitude coordinates are reversed to latitude/longitude).

SqlGeography MakeValidGeographyFromText(string inputWKT, int srid)

Convert an input WKT to a valid geography instance. This function requires that the WKT coordinate values are longitude/latitude values, in that order and that a valid geography SRID value is supplied.

Answer 2

This is working for me on SQL Server 2008. After loading the shape as a geometry, use MakeValid() to correct it, then reload into a geography.

declare @gt nvarchar(max)
declare @gm geometry
declare @gmvalid geometry

set @gmvalid = @gm.MakeValid()

  set @gt = @gmvalid.STAsText()

  --select @gt
  if LEFT(@gt,7 ) = 'POLYGON'
  begin
  set @gg = geography::STPolyFromText(@gt, 4326)
  end
  else
  begin
  set @gg = geography::STMPolyFromText(@gt, 4326)
  end