If you have duplicate entries in your FreshRSS database, here is method for delete duplicate entries by title via phpMyAdmin:
Next SQL statement SELECT ALL duplicate entries by title:
SELECT * FROM `freshrss_slpadmin_entry` AS a
INNER JOIN (
SELECT title
FROM `freshrss_slpadmin_entry`
GROUP BY title
HAVING COUNT( * ) > 1
) AS b ON b.title = a.title
ORDER BY a.title
Next SQL statement SELECT duplicate entries by title with higher id:
SELECT * FROM `freshrss_slpadmin_entry` AS a
INNER JOIN (
SELECT title, MIN(id) AS min_id
FROM `freshrss_slpadmin_entry`
GROUP BY title
HAVING COUNT( * ) > 1
) AS b ON b.title = a.title
AND b.min_id <> a.id
ORDER BY a.title
Next SQL statement DELETE duplicate entries by title with DIFFERENT id:
DELETE a.* FROM `freshrss_slpadmin_entry` AS a
INNER JOIN (
SELECT title, MIN(id) AS min_id
FROM `freshrss_slpadmin_entry`
GROUP BY title
HAVING COUNT( * ) > 1
) AS b ON b.title = a.title
AND b.min_id <> a.id