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,尽我所能,我无法让 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。