require "migrate"
-class MoveToInnodb < ActiveRecord::Migration
+class MoveToInnodb < ActiveRecord::Migration[5.0]
@conv_tables = %w[nodes ways way_tags way_nodes current_way_tags relation_members relations relation_tags current_relation_tags]
@ver_tbl = %w[nodes ways relations]
# current version to something less so that we can update the version in
# batches of 10000
tbl.classify.constantize.update_all(:version => -1)
- 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 })
- end
+ 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: