开发者

How to bulk insert geography into a new sql server 2008 table

I have a very large shape file with hundreds of thousands of rows of polygons and other associated data, like formatted addressing and APN numbers. How do I get this data into a table with geography without using things like Shape2SQL? I can't very well run an insert statement for every row that would take forever, the optimal solution would be to create a csv or a properly formatted bin file and then do a bulk insert, or bcp, or openrowset, but try, try, try as I might I cannot get a csv file or bin file to work. Can anybody help?

The following code is the best I could manage.

SqlGeographyBuilder sql_geography_builder = new SqlGeographyBuilder();
sql_geography_builder.SetSrid(4326);
sql_geography_builder.BeginGeography(OpenGisGeographyType.Polygon);
sql_geography_builder.BeginFigure(-84.576064, 39.414853);
sql_geography_builder.AddLine(-84.576496, 39.414800);
sql_geography_builder.AddLine(-84.576522, 39.414932);
sql_geography_builder.AddLine(-84.576528, 39.414964);
sql_geography_builder.AddLine(-84.576095, 39.415015);
sql_geography_builder.AddLine(-84.576064, 39.414853);
sql_geography_builder.EndFigure();
sql_geography_builder.EndGeography();
SqlGeography sql_geography = new SqlGeography();
sql_geography = sql_geography_builder.ConstructedGeography;


FileStream file_stream = new FileStream("C:\\PROJECTS\\test.bin", FileMode.Create);
BinaryWriter binary_writer = new BinaryWriter(file_stream);

sql_geography.Write(binary_writer);
binary_writer.Flush();

binary_writer.Close();
file_stream.Close();
file_stream.Dispose();

SqlConnection sql_connection = new SqlConnection(connection_string);
sql_connection.Open();

SqlCommand sql_command = new SqlCommand();
sql_command.Connection = sql_connection;
sql_c开发者_运维问答ommand.CommandTimeout = 0;
sql_command.CommandType = CommandType.Text;
sql_command.CommandText = "INSERT INTO [SPATIAL_TEST].[dbo].[Table_1] ([geo]) " +
              "SELECT [ors].* " +
              "FROM OPENROWSET(BULK 'C:\\PROJECTS\\AMP\\test.bin', SINGLE_BLOB) AS [ors] ";
sql_command.ExecuteNonQuery();

sql_command.Dispose();
sql_connection.Close();
sql_connection.Dispose();

But this only lets me import singularly the polygon--I need everything else as well.


Well after several days of headache I have come to the conclusion that there is no answer. Not even the mighty ESRI has any clue. Thankfully I did come up with a different soultion. In my table definition I created an NVARCHAR(MAX) column to hold the WFT of my geography and added that WFT to my csv file, and then after the bulk insert I run a table wide update statment to convert tht WFT to the actual geography type. Also adjust the csv file to use a different character besides a , to separate with becuase the WFT contains ,'s

SqlGeographyBuilder sql_geography_builder = new SqlGeographyBuilder();
sql_geography_builder.SetSrid(4326);
sql_geography_builder.BeginGeography(OpenGisGeographyType.Polygon);
sql_geography_builder.BeginFigure(-84.576064, 39.414853);
sql_geography_builder.AddLine(-84.576496, 39.414800);
sql_geography_builder.AddLine(-84.576522, 39.414932);
sql_geography_builder.AddLine(-84.576528, 39.414964);
sql_geography_builder.AddLine(-84.576095, 39.415015);
sql_geography_builder.AddLine(-84.576064, 39.414853);
sql_geography_builder.EndFigure();
sql_geography_builder.EndGeography();
SqlGeography sql_geography = new SqlGeography();
sql_geography = sql_geography_builder.ConstructedGeography;

StreamWriter stream_writer = new StreamWriter("C:\\PROJECTS\\AMP\\test.csv");
stream_writer.AutoFlush = true;
stream_writer.WriteLine("1?123 TEST AVE?" + sql_geography.ToString() + "?");
stream_writer.Flush();
stream_writer.WriteLine("2?456 TEST AVE?" + sql_geography.ToString() + "?");
stream_writer.Flush();
stream_writer.WriteLine("9?789 TEST AVE?" + sql_geography.ToString() + "?");
stream_writer.Flush();
stream_writer.Close();
stream_writer.Dispose();

SqlConnection sql_connection = new SqlConnection(STRING_SQL_CONNECTION);
sql_connection.Open();

SqlCommand sql_command = new SqlCommand();
sql_command.Connection = sql_connection;
sql_command.CommandTimeout = 0;
sql_command.CommandType = CommandType.Text;
sql_command.CommandText = "BULK INSERT [SPATIAL_TEST].[dbo].[Table_1] " +
                          "FROM 'C:\\PROJECTS\\AMP\\test.csv' " +
                          "WITH (FIELDTERMINATOR = '?', ROWTERMINATOR = '\n') " +
                          "" +
                          "UPDATE [SPATIAL_TEST].[dbo].[Table_1] " +
                          "SET [geo] = geography::STPolyFromText([geo_string], 4326) ";
sql_command.ExecuteNonQuery();

sql_command.Dispose();
sql_connection.Close();
sql_connection.Dispose();

MessageBox.Show("DONE");
}
catch (Exception ex)
{ MessageBox.Show(ex.Message); }
0

上一篇:

下一篇:

精彩评论

暂无评论...
验证码 换一张
取 消

最新问答

问答排行榜