Arel::Sql::Christener

   # File lib/arel/engines/sql/christener.rb, line 4
4:       def initialize
5:         @names = {}
6:       end

    # File lib/arel/engines/sql/christener.rb, line 8
 8:       def name_for(relation)
 9:         table = relation.table
10:         name = table.table_alias || table.name
11:         list = @names[name] ||= []
12: 
13:         list << table unless list.include? table
14: 
15:         idx = list.index table
16:         name + (idx == 0 ? '' : "_#{idx + 1}")
17:       end