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Merge aschwenke@bk-internal.mysql.com:/home/bk/mysql-5.0

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into  alpha.xl.local:/home/schwenke/Work/MySQL/BK-internal-tree/mysql-5.0
This commit is contained in:
schwenke@alpha.xl.local
2005-08-01 08:34:29 +02:00
parent 84c5ce61c5 7f845036c0
commit 655a86a9e7
33 changed files with 387 additions and 301 deletions
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51
sql/sql_select.cc
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@@ -1762,7 +1762,7 @@ Cursor::init_from_thd(THD *thd)
for (handlerton **pht= thd->transaction.stmt.ht; *pht; pht++)
{
const handlerton *ht= *pht;
close_at_commit|= (ht->flags & HTON_CLOSE_CURSORS_AT_COMMIT);
close_at_commit|= test(ht->flags & HTON_CLOSE_CURSORS_AT_COMMIT);
if (ht->create_cursor_read_view)
{
info->ht= ht;
@@ -2758,11 +2758,9 @@ add_key_field(KEY_FIELD **key_fields,uint and_level, Item_func *cond,
We use null_rejecting in add_not_null_conds() to add
'othertbl.field IS NOT NULL' to tab->select_cond.
*/
(*key_fields)->null_rejecting= (cond->functype() == Item_func::EQ_FUNC) &&
((*value)->type() == Item::FIELD_ITEM) &&
(((Item_field*)*value)->field->maybe_null() ||
((Item_field *)*value)->field->table->maybe_null);
(*key_fields)->null_rejecting= ((cond->functype() == Item_func::EQ_FUNC) &&
((*value)->type() == Item::FIELD_ITEM) &&
((Item_field*)*value)->field->maybe_null());
(*key_fields)++;
}
@@ -8036,11 +8034,13 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
bool table_cant_handle_bit_fields,
uint convert_blob_length)
{
Item *org_item= item;
if (item->real_item()->type() == Item::FIELD_ITEM)
if (type != Item::FIELD_ITEM &&
item->real_item()->type() == Item::FIELD_ITEM &&
(item->type() != Item::REF_ITEM ||
!((Item_ref *) item)->depended_from))
{
item= item->real_item();
type= item->type();
type= Item::FIELD_ITEM;
}
switch (type) {
case Item::SUM_FUNC_ITEM:
@@ -8054,23 +8054,18 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
case Item::FIELD_ITEM:
case Item::DEFAULT_VALUE_ITEM:
{
if (org_item->type() != Item::REF_ITEM ||
!((Item_ref *)org_item)->depended_from)
{
Item_field *field= (Item_field*) item;
if (table_cant_handle_bit_fields &&
field->field->type() == FIELD_TYPE_BIT)
return create_tmp_field_from_item(thd, item, table, copy_func,
modify_item, convert_blob_length);
return create_tmp_field_from_field(thd, (*from_field= field->field),
item->name, table,
modify_item ? (Item_field*) item :
NULL,
convert_blob_length);
}
else
item= org_item;
Item_field *field= (Item_field*) item;
if (table_cant_handle_bit_fields &&
field->field->type() == FIELD_TYPE_BIT)
return create_tmp_field_from_item(thd, item, table, copy_func,
modify_item, convert_blob_length);
return create_tmp_field_from_field(thd, (*from_field= field->field),
item->name, table,
modify_item ? (Item_field*) item :
NULL,
convert_blob_length);
}
/* Fall through */
case Item::FUNC_ITEM:
case Item::COND_ITEM:
case Item::FIELD_AVG_ITEM:
@@ -10919,13 +10914,13 @@ test_if_skip_sort_order(JOIN_TAB *tab,ORDER *order,ha_rows select_limit,
usable_keys.set_all();
for (ORDER *tmp_order=order; tmp_order ; tmp_order=tmp_order->next)
{
if ((*tmp_order->item)->real_item()->type() != Item::FIELD_ITEM)
Item *item= (*tmp_order->item)->real_item();
if (item->type() != Item::FIELD_ITEM)
{
usable_keys.clear_all();
DBUG_RETURN(0);
}
usable_keys.intersect(((Item_field*) (*tmp_order->item)->real_item())->
field->part_of_sortkey);
usable_keys.intersect(((Item_field*) item)->field->part_of_sortkey);
if (usable_keys.is_clear_all())
DBUG_RETURN(0); // No usable keys
}