this is my query:
update `zen_meta_tags_products_description`
set `metatags_keywords`= 'ice machine, ice maker, ice flaker, Brema,'
WHERE `products_id` = ('1231'; '1232'; '1233'; '1234'; '1235'; '1236'; '1237'; '1238'; '1239'; '1240';)
Error
MySQL said: Documentation
1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '1232, 1233' at line 1
Remove semicolom from your list
Insted of = use IN to get write result:
UPDATE `zen_meta_tags_products_description`
set `metatags_keywords`= 'ice machine, ice maker, ice flaker, Brema,'
WHERE `products_id` IN ('1231', '1232', '1233','1234', '1235', '1236', '1237', '1238', '1239', '1240') ;