如何将地理批量插入新的 sql server 2008 表

Question

我有一个非常大的形状文件，其中包含数十万行多边形和其他相关数据，例如格式化的地址和 APN 编号。如何在不使用 Shape2SQL 之类的东西的情况下将这些数据放入带有地理的表中？我不能很好地为每一行运行插入语句，这将永远花费，最佳解决方案是创建一个 csv 或格式正确的 bin 文件，然后进行批量插入，或bcp，或 openrowset，但尝试，尝试，尝试，因为我可能无法让 csv 文件或 bin 文件工作。有人可以帮忙吗？

以下代码是我能做到的最好的。

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_command.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();

但这只能让我单独导入多边形——我还需要其他所有东西。

Answer 1

好吧，经过几天的头痛，我得出了没有答案的结论。甚至强大的 ESRI 也没有任何线索。谢天谢地，我确实想出了一个不同的灵魂。在我的表定义中，我创建了一个 NVARCHAR(MAX) 列来保存我的地理位置的 WFT 并将该 WFT 添加到我的 csv 文件中，然后在批量插入之后我运行一个表范围的更新语句以将 WFT 转换为实际的地理类型.还要调整 csv 文件以使用除 a 之外的其他字符，以分隔，因为 WFT 包含 ,'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); }