I store all my photos in Gallery2 with a PostgreSQL database back-end. It works well in most respects but fails miserably when it comes to managing Comments. Whilst it’s possible to delete them, it can only be done one at a time; a painfully slow process when there can be tens of thousands of spam comments. This little PostgreSQL script can take the pain out of it:-
SELECT g_id INTO TEMPORARY tmptable FROM g2_comment WHERE g_host='220.127.116.11' or g_host='18.104.22.168' or g_comment like '%http:%' or g_comment like '%url=%'; DELETE FROM g2_entity WHERE g_id IN (SELECT g_id FROM tmptable); DELETE FROM g2_childentity WHERE g_id IN (SELECT g_id FROM tmptable); DELETE FROM g2_comment WHERE g_id IN (SELECT g_id FROM tmptable); DROP TABLE tmptable;
This should only be treated as an example but it provides a good foundation to work from. Bulk comments often come from common IP Addresses so the g_host entries can be used to handle that without too much pain. The g_comment fields match comments that contain http or url entries. As none of my good comments contain links, these are my ultimate Spam comment killers.