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# File 'lib/distinct_distinct_patch.rb', line 4
def construct_limited_ids_condition(relation)
orders = relation.order_values.map { |val| val.presence }.compact
values = @klass.connection.distinct("#{@klass.connection.quote_table_name table_name}.#{primary_key}", orders)
relation = relation.dup.select(values)
relation.uniq_value = nil
id_rows = @klass.connection.select_all(relation.arel, 'SQL', relation.bind_values)
ids_array = id_rows.map {|row| row[primary_key]}
ids_array.empty? ? raise(ActiveRecord::ThrowResult) : table[primary_key].in(ids_array)
end
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