Method field_str

sql/sql_analyse.h:113–119

public:
  field_str(Item* a, select_analyse* b) :field_info(a,b), 
    min_arg("",default_charset_info),
    max_arg("",default_charset_info), sum(0),
    must_be_blob(0), was_zero_fill(0),
    was_maybe_zerofill(0), can_be_still_num(1)
    { init_tree(&tree, 0, 0, sizeof(String), (qsort_cmp2) sortcmp2,
		0, (tree_element_free) free_string, NULL); };

  void	 add();
  void	 get_opt_type(String*, ha_rows);