Unknown column '_created_by_.gid' in 'field list' SQL=SELECT a.id,a.admin_notes,a.asset_name,a.created_by,a.creation_date,a.encoder,a.expires,a.key_file,a.mac_address,a.modification_date,a.modified_by,a.product,_created_by_.name AS `_created_by_name`,_created_by_.lastvisitDate AS `_created_by_lastvisitDate`,_created_by_.email AS `_created_by_email`,_created_by_.usertype AS `_created_by_usertype`,_created_by_.gid AS `_created_by_gid`,_created_by_.registerDate AS `_created_by_registerDate`,_product_.name AS `_product_name`,_encoder_.name AS `_encoder_name`,_modified_by_.name AS `_modified_by_name` FROM mbs_skm_licenses AS a LEFT JOIN `mbs_users` AS _created_by_ ON _created_by_.id = a.created_by LEFT JOIN `mbs_skm_products` AS _product_ ON _product_.id = a.product LEFT JOIN `mbs_skm_encoders` AS _encoder_ ON _encoder_.id = a.encoder LEFT JOIN `mbs_users` AS _modified_by_ ON _modified_by_.id = a.modified_by WHERE a.id = 1