如何使Postgres Copy忽略大型txt文件的第一行

COPY table_name FROM 'file_path' WITH HEADER;

COPY table_name FROM 'file_path' (FORMAT 'csv', HEADER, DELIMITER ',');

CREATE OR REPLACE FUNCTION copy_file_without_header() RETURNS VOID AS $$
DECLARE
  file_path CONSTANT TEXT := 'file_path';
  header_line CONSTANT TEXT := 'header_line';
BEGIN
  EXECUTE 'COPY table_name FROM ''' || file_path || ''' (FORMAT ''csv'', HEADER, DELIMITER '','')';
END;
$$ LANGUAGE plpgsql;

SELECT copy_file_without_header();