Npgsql.Schema.DbColumnSchemaGenerator.LoadColumnDefinition C# (CSharp) Method

        NpgsqlDbColumn LoadColumnDefinition(NpgsqlDataReader reader)
        {
            var columnName = reader.GetString(reader.GetOrdinal("attname"));
            var column = new NpgsqlDbColumn
            {
                AllowDBNull = !reader.GetBoolean(reader.GetOrdinal("attnotnull")),
                BaseCatalogName = _connection.Database,
                BaseColumnName = columnName,
                BaseSchemaName = reader.GetString(reader.GetOrdinal("nspname")),
                BaseServerName = _connection.Host,
                BaseTableName = reader.GetString(reader.GetOrdinal("relname")),
                ColumnName = columnName,
                ColumnOrdinal = reader.GetInt32(reader.GetOrdinal("attnum")) - 1,
                ColumnAttributeNumber = (short)(reader.GetInt16(reader.GetOrdinal("attnum")) - 1),
                IsKey = reader.GetBoolean(reader.GetOrdinal("isprimarykey")),
                IsReadOnly = !reader.GetBoolean(reader.GetOrdinal("is_updatable")),
                IsUnique = reader.GetBoolean(reader.GetOrdinal("isunique")),
                DataTypeName = reader.GetString(reader.GetOrdinal("typname")),

                TableOID = reader.GetFieldValue<uint>(reader.GetOrdinal("attrelid")),
                TypeOID = reader.GetFieldValue<uint>(reader.GetOrdinal("typoid"))
            };

            var defaultValueOrdinal = reader.GetOrdinal("default");
            column.DefaultValue = reader.IsDBNull(defaultValueOrdinal) ? null : reader.GetString(defaultValueOrdinal);

            column.IsAutoIncrement = column.DefaultValue != null && column.DefaultValue.StartsWith("nextval(");

            ColumnPostConfig(column, reader.GetInt32(reader.GetOrdinal("atttypmod")));

            return column;
        }