Method add_fake_select_lex

sql/sql_parse.cc:8883–8922

*/

bool st_select_lex_unit::add_fake_select_lex(THD *thd_arg)
{
  SELECT_LEX *first_sl= first_select();
  DBUG_ENTER("st_select_lex_unit::add_fake_select_lex");
  DBUG_ASSERT(!fake_select_lex);

  if (!(fake_select_lex= new (thd_arg->mem_root) SELECT_LEX()))
      DBUG_RETURN(1);
  fake_select_lex->include_standalone(this, 
                                      (SELECT_LEX_NODE**)&fake_select_lex);
  fake_select_lex->select_number= FAKE_SELECT_LEX_ID;
  fake_select_lex->parent_lex= thd_arg->lex; /* Used in init_query. */
  fake_select_lex->make_empty_select();
  fake_select_lex->set_linkage(GLOBAL_OPTIONS_TYPE);

  fake_select_lex->no_table_names_allowed= 1;

  fake_select_lex->context.outer_context=first_sl->context.outer_context;
  /* allow item list resolving in fake select for ORDER BY */
  fake_select_lex->context.resolve_in_select_list= TRUE;
  fake_select_lex->context.select_lex= fake_select_lex;  

  fake_select_lex->nest_level_base= first_select()->nest_level_base;
  if (fake_select_lex->set_nest_level(first_select()->nest_level))
    DBUG_RETURN(1);

  if (!is_unit_op())
  {
    /* 
      This works only for 
      (SELECT ... ORDER BY list [LIMIT n]) ORDER BY order_list [LIMIT m],
      (SELECT ... LIMIT n) ORDER BY order_list [LIMIT m]
      just before the parser starts processing order_list
    */ 
    fake_select_lex->no_table_names_allowed= 1;
    thd_arg->lex->current_select= fake_select_lex;
  }
  //thd_arg->lex->pop_context("add fake");
  DBUG_RETURN(0);
}


/**