bool Item_func_case_searched::fix_length_and_dec()
{
  THD *thd= current_thd;
  return aggregate_then_and_else_arguments(thd, when_count());
}
bool Item_func_case_searched::fix_length_and_dec()
{
  THD *thd= current_thd;
  return aggregate_then_and_else_arguments(thd, when_count());
}