I’m having this error when updating from 2.5.5 to 2.6.1 when going from the list of entries to the edit page in the backend.
A Database Error Occurred
Error Number: 1054
Unknown column '' in 'order clause'
SELECT DISTINCT `exp_channel_titles`.`entry_id`, `exp_channel_titles`.`title` FROM (`exp_channel_titles`) WHERE `exp_channel_titles`.`channel_id` IN (NULL) AND `exp_channel_titles`.`entry_date` < 371721836 AND (exp_channel_titles.expirati OR exp_channel_titles.expiration_date > 1371721836) AND `exp_channel_titles`.`entry_id` != '163' OR `exp_channel_titles`.`entry_id` IN ('62') ORDER BY `
Filename: fieldtypes/relationship/ft.relationship.php
Line Number: 359It’s not this one: https://support.ellislab.com/bugs/detail/19321. That bug was fixed in my current version of EE.
Thanks in advance!
Diederik.