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Merge latest 5.1 into performance version

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This commit is contained in:
Mikael Ronstrom
2008-12-15 09:47:39 +01:00
parent 0f0115a798 30d8a8f950
commit cb52ac91da
513 changed files with 193036 additions and 238182 deletions
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51
sql/sql_select.cc
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@ -402,11 +402,21 @@ inline int setup_without_group(THD *thd, Item **ref_pointer_array,
{
int res;
nesting_map save_allow_sum_func=thd->lex->allow_sum_func ;
/*
Need to save the value, so we can turn off only the new NON_AGG_FIELD
additions coming from the WHERE
*/
uint8 saved_flag= thd->lex->current_select->full_group_by_flag;
DBUG_ENTER("setup_without_group");
thd->lex->allow_sum_func&= ~(1 << thd->lex->current_select->nest_level);
res= setup_conds(thd, tables, leaves, conds);
/* it's not wrong to have non-aggregated columns in a WHERE */
if (thd->variables.sql_mode & MODE_ONLY_FULL_GROUP_BY)
thd->lex->current_select->full_group_by_flag= saved_flag |
(thd->lex->current_select->full_group_by_flag & ~NON_AGG_FIELD_USED);
thd->lex->allow_sum_func|= 1 << thd->lex->current_select->nest_level;
res= res || setup_order(thd, ref_pointer_array, tables, fields, all_fields,
order);
@ -6863,6 +6873,7 @@ only_eq_ref_tables(JOIN *join,ORDER *order,table_map tables)
{
if (specialflag & SPECIAL_SAFE_MODE)
return 0; // skip this optimize /* purecov: inspected */
tables&= ~PSEUDO_TABLE_BITS;
for (JOIN_TAB **tab=join->map2table ; tables ; tab++, tables>>=1)
{
if (tables & 1 && !eq_ref_table(join, order, *tab))
@ -8585,6 +8596,8 @@ simplify_joins(JOIN *join, List<TABLE_LIST> *join_list, COND *conds, bool top)
}
/* Flatten nested joins that can be flattened. */
TABLE_LIST *right_neighbor= NULL;
bool fix_name_res= FALSE;
li.rewind();
while ((table= li++))
{
@ -8597,9 +8610,17 @@ simplify_joins(JOIN *join, List<TABLE_LIST> *join_list, COND *conds, bool top)
{
tbl->embedding= table->embedding;
tbl->join_list= table->join_list;
}
}
li.replace(nested_join->join_list);
/* Need to update the name resolution table chain when flattening joins */
fix_name_res= TRUE;
table= *li.ref();
}
if (fix_name_res)
table->next_name_resolution_table= right_neighbor ?
right_neighbor->first_leaf_for_name_resolution() :
NULL;
right_neighbor= table;
}
DBUG_RETURN(conds);
}
@ -9274,6 +9295,7 @@ static Field *create_tmp_field_from_item(THD *thd, Item *item, TABLE *table,
*/
if ((type= item->field_type()) == MYSQL_TYPE_DATETIME ||
type == MYSQL_TYPE_TIME || type == MYSQL_TYPE_DATE ||
type == MYSQL_TYPE_NEWDATE ||
type == MYSQL_TYPE_TIMESTAMP || type == MYSQL_TYPE_GEOMETRY)
new_field= item->tmp_table_field_from_field_type(table, 1);
/*
@ -9791,11 +9813,11 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
}
if (type == Item::SUM_FUNC_ITEM && !group && !save_sum_fields)
{ /* Can't calc group yet */
((Item_sum*) item)->result_field=0;
for (i=0 ; i < ((Item_sum*) item)->arg_count ; i++)
Item_sum *sum_item= (Item_sum *) item;
sum_item->result_field=0;
for (i=0 ; i < sum_item->get_arg_count() ; i++)
{
Item **argp= ((Item_sum*) item)->args + i;
Item *arg= *argp;
Item *arg= sum_item->get_arg(i);
if (!arg->const_item())
{
Field *new_field=
@ -9823,7 +9845,7 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
string_total_length+= new_field->pack_length();
}
thd->mem_root= mem_root_save;
thd->change_item_tree(argp, new Item_field(new_field));
arg= sum_item->set_arg(i, thd, new Item_field(new_field));
thd->mem_root= &table->mem_root;
if (!(new_field->flags & NOT_NULL_FLAG))
{
@ -9832,7 +9854,7 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
new_field->maybe_null() is still false, it will be
changed below. But we have to setup Item_field correctly
*/
(*argp)->maybe_null=1;
arg->maybe_null=1;
}
new_field->field_index= fieldnr++;
}
@ -14540,9 +14562,9 @@ count_field_types(SELECT_LEX *select_lex, TMP_TABLE_PARAM *param,
param->quick_group=0; // UDF SUM function
param->sum_func_count++;
for (uint i=0 ; i < sum_item->arg_count ; i++)
for (uint i=0 ; i < sum_item->get_arg_count() ; i++)
{
if (sum_item->args[0]->real_item()->type() == Item::FIELD_ITEM)
if (sum_item->get_arg(i)->real_item()->type() == Item::FIELD_ITEM)
param->field_count++;
else
param->func_count++;
@ -14811,6 +14833,7 @@ setup_copy_fields(THD *thd, TMP_TABLE_PARAM *param,
Item *pos;
List_iterator_fast<Item> li(all_fields);
Copy_field *copy= NULL;
IF_DBUG(Copy_field *copy_start);
res_selected_fields.empty();
res_all_fields.empty();
List_iterator_fast<Item> itr(res_all_fields);
@ -14823,12 +14846,19 @@ setup_copy_fields(THD *thd, TMP_TABLE_PARAM *param,
goto err2;
param->copy_funcs.empty();
IF_DBUG(copy_start= copy);
for (i= 0; (pos= li++); i++)
{
Field *field;
uchar *tmp;
Item *real_pos= pos->real_item();
if (real_pos->type() == Item::FIELD_ITEM)
/*
Aggregate functions can be substituted for fields (by e.g. temp tables).
We need to filter those substituted fields out.
*/
if (real_pos->type() == Item::FIELD_ITEM &&
!(real_pos != pos &&
((Item_ref *)pos)->ref_type() == Item_ref::AGGREGATE_REF))
{
Item_field *item;
if (!(item= new Item_field(thd, ((Item_field*) real_pos))))
@ -14875,6 +14905,7 @@ setup_copy_fields(THD *thd, TMP_TABLE_PARAM *param,
goto err;
if (copy)
{
DBUG_ASSERT (param->field_count > (uint) (copy - copy_start));
copy->set(tmp, item->result_field);
item->result_field->move_field(copy->to_ptr,copy->to_null_ptr,1);
#ifdef HAVE_purify