private void sql_CreateTable(MG_FieldSet fieldSet, MG_GeometryType gt, out string strSQL, out NpgsqlParameter[] sqlParams)
        {
            // oid, field1, field2, field3, field4,...fieldN, geom
            //CREATE TABLE point2 ( oid SERIAL PRIMARY KEY, name1 VARCHAR, name2 VARCHAR); SELECT AddGeometryColumn('public','point2','geom',0,'POINT',2);
            // table name, column name must be lowercase, e.g.   pointTABLE --->pointtable

            string front = "CREATE TABLE {0} ( oid SERIAL PRIMARY KEY";
            string table = fieldSet.GetName().ToLower();
            front = String.Format(front, table);

            string m = ", {0} {1}";
            string mid = "";
            for (int i = 0; i < fieldSet.Count(); i++)
            {
                MG_Field field = fieldSet.GetAt(i);
                mid += String.Format(m, field.Name, field.Type.ToString());
            }
            string end = "); SELECT AddGeometryColumn('public','{0}','geom',0,'{1}',2);";
            end = String.Format(end, table, gt.ToString());

            strSQL = front + mid + end;
            sqlParams = null;
        }