Method print_assignment

sql/item_func.cc:1573–1580

just the assignment, for use in "SET @a:=5" type self-prints

// just the assignment, for use in "SET @a:=5" type self-prints
void Item_func_set_user_var::print_assignment(String *str,
                                              enum_query_type query_type)
{
  str->append(STRING_WITH_LEN("@"));
  str->append(name);
  str->append(STRING_WITH_LEN(":="));
  args[0]->print(str, query_type);
}

// parenthesize assignment for use in "EXPLAIN EXTENDED SELECT (@e:=80)+5"
void Item_func_set_user_var::print(String *str, enum_query_type query_type)