require "migrate"
-class MoveToInnodb < ActiveRecord::Migration
- @conv_tables = %w(nodes ways way_tags way_nodes current_way_tags relation_members relations relation_tags current_relation_tags)
+class MoveToInnodb < ActiveRecord::Migration[4.2]
+ @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)
+ @ver_tbl = %w[nodes ways relations]
def self.up
remove_index :current_way_tags, :name => :current_way_tags_v_idx
@ver_tbl.each do |tbl|
change_column tbl, "version", :bigint, :null => false
- end
-
- @ver_tbl.each do |tbl|
add_column "current_#{tbl}", "version", :bigint, :null => false
- # As the initial version of all nodes, ways and relations is 0, we set the
+ # As the initial version of all nodes, ways and relations is 0, we set tehe
# 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.count(:conditions => { :version => -1 }) > 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 => -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.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: