Method add_cross_joined_table

sql/sql_parse.cc:8588–8704

*/

bool st_select_lex::add_cross_joined_table(TABLE_LIST *left_op,
                                           TABLE_LIST *right_op,
                                           bool straight_fl)
{
  DBUG_ENTER("add_cross_joined_table");
  THD *thd= parent_lex->thd;
  if (!(right_op->nested_join &&
	(right_op->nested_join->nest_type & JOIN_OP_NEST)))
  {
    /*
      This handles the cases when the right operand is not a nested join.
      like in queries
        SELECT * FROM t1 JOIN t2;
        SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a JOIN t3
    */
    add_joined_table(left_op);
    add_joined_table(right_op);
    right_op->straight= straight_fl;
    DBUG_RETURN(false);
  }

  TABLE_LIST *tbl;
  List<TABLE_LIST> *right_op_jl= right_op->join_list;
  TABLE_LIST *cj_nest;

  /*
    Create the node NJ for a new nested join for the future inclusion
    of left_op in it. Initially the nest is empty.
  */
  if (unlikely(!(cj_nest=
                 (TABLE_LIST*) thd->calloc(ALIGN_SIZE(sizeof(TABLE_LIST))+
                                           sizeof(NESTED_JOIN)))))
    DBUG_RETURN(true);
  cj_nest->nested_join=
    ((NESTED_JOIN*) ((uchar*) cj_nest + ALIGN_SIZE(sizeof(TABLE_LIST))));
  cj_nest->nested_join->nest_type= JOIN_OP_NEST;
  List<TABLE_LIST> *cjl=  &cj_nest->nested_join->join_list;
  cjl->empty();

  List<TABLE_LIST> *jl= &right_op->nested_join->join_list;
  DBUG_ASSERT(jl->elements == 2);
  /* Look for the left most node tbl of the right_op tree */
  for ( ; ; )
  {
    TABLE_LIST *pair_tbl= 0;  /* useful only for operands of natural joins */

    List_iterator<TABLE_LIST> li(*jl);
    tbl= li++;

    /* Expand name resolution context */
    Name_resolution_context *on_context;
    if ((on_context= tbl->on_context))
    {
      on_context->first_name_resolution_table=
        left_op->first_leaf_for_name_resolution();
    }

    if (!(tbl->outer_join & JOIN_TYPE_RIGHT))