# current version to something less so that we can update the version in
# batches of 10000
tbl.classify.constantize.update_all(:version => -1)
- tbl.classify.constantize.update_all("version=(SELECT max(version) FROM #{tbl} WHERE #{tbl}.id = current_#{tbl}.id)", { :version => -1 }, { :limit => 10000 }) while tbl.classify.constantize.where(:version => -1).count > 0
+ tbl.classify.constantize.update_all("version=(SELECT max(version) FROM #{tbl} WHERE #{tbl}.id = current_#{tbl}.id)", { :version => -1 }, { :limit => 10000 }) while tbl.classify.constantize.where(:version => -1).count.positive?
# execute "UPDATE current_#{tbl} SET version = " +
# "(SELECT max(version) FROM #{tbl} WHERE #{tbl}.id = current_#{tbl}.id)"
# The above update causes a MySQL error: