the tables and columns are now snake cased

src/CIM.PostgresImporter.CLI/PostgresImport.cs

@@ -42,9 +42,9 @@ public static async Task<int> ImportAsync(
         builder.UseNetTopologySuite();
         using var dataSource = builder.Build();
         using var connection = await dataSource.OpenConnectionAsync().ConfigureAwait(false);
-        var fields = string.Join(",", schemaType.Keys.Select(key => $"\"{key}\""));
+        var fields = string.Join(",", schemaType.Keys.Select(key => $"\"{key.ToSnakeCase()}\""));
 
-        var copySql = $"COPY \"{schemaName}\".\"{typeName}\" ({fields}) FROM STDIN (FORMAT BINARY)";
+        var copySql = $"COPY \"{schemaName}\".\"{typeName.ToSnakeCase()}\" ({fields}) FROM STDIN (FORMAT BINARY)";
 
         var postgresqlBinaryWriter = await connection.BeginBinaryImportAsync(copySql).ConfigureAwait(false);
 

src/CIM.PostgresImporter.CLI/PostgresSchemaBuilder.cs

@@ -9,11 +9,11 @@ public static string Build(Schema schema, string schemaName)
 
     private static string Build(SchemaType schemaType, string schemaName)
     {
-        var columns = string.Join(",\n  ", schemaType.Properties.Select(x => $"\"{x.Name}\" {ConvertInternalTypeToPostgresqlType(x.Type)}"));
+        var columns = string.Join(",\n  ", schemaType.Properties.Select(x => $"\"{x.Name.ToSnakeCase()}\" {ConvertInternalTypeToPostgresqlType(x.Type)}"));
         return @$"
-CREATE TABLE ""{schemaName}"".""{schemaType.Name}"" (
+CREATE TABLE ""{schemaName}"".""{schemaType.Name.ToSnakeCase()}"" (
   {columns},
-  PRIMARY KEY (""mRID"")
+  PRIMARY KEY (""m_rid"")
 );";
     }
 

src/CIM.PostgresImporter.CLI/StringExtensions.cs

@@ -0,0 +1,14 @@
+using System.Globalization;
+using System.Text.RegularExpressions;
+
+namespace CIM.PostgresImporter.CLI;
+
+internal static class StringExtensions
+{
+    public static string ToSnakeCase(this string text)
+    {
+        #pragma warning disable CA1308 // We want lower case.
+        return Regex.Replace(text, "(?<=[a-z0-9])[A-Z]|(?<=[A-Z])[A-Z][a-z]", "_$0").ToLower(CultureInfo.InvariantCulture);
+        #pragma warning restore CA1308
+    }
+}