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processing of subselect in global ORDER BY (fifed crash of server)

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this implementation have limitation: prohibited subselect in ORDER BY dependence of most outer query (will be solved after removing passing first select_lex as fake select for global mysql_select())
This commit is contained in:
bell@sanja.is.com.ua
2003-03-11 01:06:28 +02:00
parent 9c8838749f
commit c96e588490
6 changed files with 76 additions and 13 deletions
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11
sql/sql_parse.cc
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@@ -3204,7 +3204,8 @@ mysql_init_query(THD *thd)
lex->select_lex.init_query();
lex->value_list.empty();
lex->param_list.empty();
lex->unit.next= lex->unit.master= lex->unit.link_next= 0;
lex->unit.next= lex->unit.master= lex->unit.return_to=
lex->unit.link_next= 0;
lex->unit.prev= lex->unit.link_prev= 0;
lex->unit.global_parameters= lex->unit.slave= lex->current_select=
lex->all_selects_list= &lex->select_lex;
@@ -3252,9 +3253,9 @@ bool
mysql_new_select(LEX *lex, bool move_down)
{
SELECT_LEX *select_lex = new SELECT_LEX();
select_lex->select_number= ++lex->thd->select_number;
if (!select_lex)
return 1;
select_lex->select_number= ++lex->thd->select_number;
select_lex->init_query();
select_lex->init_select();
if (move_down)
@@ -3266,9 +3267,13 @@ mysql_new_select(LEX *lex, bool move_down)
unit->init_query();
unit->init_select();
unit->thd= lex->thd;
unit->include_down(lex->current_select);
if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
unit->include_neighbour(lex->current_select);
else
unit->include_down(lex->current_select);
unit->link_next= 0;
unit->link_prev= 0;
unit->return_to= lex->current_select;
select_lex->include_down(unit);
}
else