Исравил \\ при обработке типов

app/migrator.py

@@ -737,7 +737,6 @@ class DatabaseMigrator:
             na_rep='\\N',
             date_format='%Y-%m-%d %H:%M:%S.%f',
             quoting=csv.QUOTE_MINIMAL,
-            escapechar='\\',
         )
         buffer.seek(0)
 
@@ -747,7 +746,7 @@ class DatabaseMigrator:
         )
         copy_sql = (
             f"COPY {self.qualify_table_name(table_name)} ({quoted_columns}) "
-            "FROM STDIN WITH (FORMAT csv, DELIMITER E'\\t', NULL '\\N', ESCAPE '\\', QUOTE '\"')"
+            "FROM STDIN WITH (FORMAT csv, DELIMITER E'\\t', NULL '\\N', QUOTE '\"')"
         )
 
         dst_connection = self.dst_engine.raw_connection()