visitors.rb in arel-7.0.0

- old
+ new

@@ -4,9 +4,10 @@
 require 'arel/visitors/sqlite'
 require 'arel/visitors/postgresql'
 require 'arel/visitors/mysql'
 require 'arel/visitors/mssql'
 require 'arel/visitors/oracle'
+require 'arel/visitors/oracle12'
 require 'arel/visitors/where_sql'
 require 'arel/visitors/dot'
 require 'arel/visitors/ibm_db'
 require 'arel/visitors/informix'
 