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merge

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monty@mysql.com
2005-06-05 17:19:50 +03:00
parent 10f8d83dcb 25a2c4a71e
commit 4b7882dc73
36 changed files with 7447 additions and 6220 deletions
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57
sql/sql_select.cc
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@ -957,32 +957,35 @@ JOIN::optimize()
#endif
DBUG_EXECUTE("info",TEST_join(this););
/*
Because filesort always does a full table scan or a quick range scan
we must add the removed reference to the select for the table.
We only need to do this when we have a simple_order or simple_group
as in other cases the join is done before the sort.
*/
if (const_tables != tables &&
(order || group_list) &&
join_tab[const_tables].type != JT_ALL &&
join_tab[const_tables].type != JT_FT &&
join_tab[const_tables].type != JT_REF_OR_NULL &&
(order && simple_order || group_list && simple_group))
{
if (add_ref_to_table_cond(thd,&join_tab[const_tables]))
DBUG_RETURN(1);
}
if (!(select_options & SELECT_BIG_RESULT) &&
((group_list && const_tables != tables &&
(!simple_group ||
!test_if_skip_sort_order(&join_tab[const_tables], group_list,
unit->select_limit_cnt, 0))) ||
select_distinct) &&
tmp_table_param.quick_group && !procedure)
if (const_tables != tables)
{
need_tmp=1; simple_order=simple_group=0; // Force tmp table without sort
/*
Because filesort always does a full table scan or a quick range scan
we must add the removed reference to the select for the table.
We only need to do this when we have a simple_order or simple_group
as in other cases the join is done before the sort.
*/
if ((order || group_list) &&
join_tab[const_tables].type != JT_ALL &&
join_tab[const_tables].type != JT_FT &&
join_tab[const_tables].type != JT_REF_OR_NULL &&
(order && simple_order || group_list && simple_group))
{
if (add_ref_to_table_cond(thd,&join_tab[const_tables]))
DBUG_RETURN(1);
}
if (!(select_options & SELECT_BIG_RESULT) &&
((group_list &&
(!simple_group ||
!test_if_skip_sort_order(&join_tab[const_tables], group_list,
unit->select_limit_cnt, 0))) ||
select_distinct) &&
tmp_table_param.quick_group && !procedure)
{
need_tmp=1; simple_order=simple_group=0; // Force tmp table without sort
}
}
tmp_having= having;
@ -5381,6 +5384,8 @@ make_join_select(JOIN *join,SQL_SELECT *select,COND *cond)
JOIN_TAB *first_inner_tab= tab->first_inner;
table_map current_map= tab->table->map;
bool use_quick_range=0;
COND *tmp;
/*
Following force including random expression in last table condition.
It solve problem with select like SELECT * FROM t1 WHERE rand() > 0.5
@ -5402,7 +5407,7 @@ make_join_select(JOIN *join,SQL_SELECT *select,COND *cond)
join->best_positions[i].records_read= rows2double(tab->quick->records);
}
COND *tmp= NULL;
tmp= NULL;
if (cond)
tmp= make_cond_for_table(cond,used_tables,current_map);
if (cond && !tmp && tab->quick)
@ -13610,7 +13615,7 @@ static void print_join(THD *thd, String *str, List<TABLE_LIST> *tables)
(*table)->print(thd, str);
TABLE_LIST **end= table + tables->elements;
for(TABLE_LIST **tbl= table + 1; tbl < end; tbl++)
for (TABLE_LIST **tbl= table + 1; tbl < end; tbl++)
{
TABLE_LIST *curr= *tbl;
if (curr->outer_join)