how can I reset all my store views value to use default "All Store View" value?
Which database table(s) should be done that?
I have 279 categories and 2 store views.
Magento v1.9.2.2
Simple steps to solve it:
Execute query for every backend type of attribute in category:
DELETE FROM catalog_category_entity_int where store_id = 'store_id_to_remove value from'
DELETE FROM catalog_category_entity_varchar where store_id = 'store_id_to_remove value from'
DELETE FROM catalog_category_entity_text where store_id = 'store_id_to_remove value from'
DELETE FROM catalog_category_entity_decimal where store_id = 'store_id_to_remove value from'
DELETE FROM catalog_category_entity_datetime where store_id = 'store_id_to_remove value from'
Check everything is correct, otherwise restore from dump and check what went wrong.