Bulk update

Bulk update

Any simple query can be transformed to update query. The new update query will use the where clause as parameter for the update.

User.query.where(name =~ /[A-Z]/ ).
     to_update.set(name: Clear::SQL.unsafe("LOWERCASE(name)")).execute

Bulk delete

Same apply for DELETE query.

User.query.where(name !~ /[A-Z]/ ).
     to_delete.execute

Beware: Bulk update and delete do not trigger any model lifecycle hook. Proceed with care.