err:=db.QueryRow(`SELECT backend_file_id, content_type, long_url, "type" FROM objects WHERE bucket='0' AND "key"=$1 LIMIT 1`,string(ctx.Path())).Scan(&backend_file_id,&content_type,&long_url,&object_type)
err:=db.QueryRow(
`SELECT backend_file_id, content_type, long_url, "type" FROM objects WHERE bucket_key=$1 LIMIT 1`,