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This commit is contained in:
Alexey Botchkov
2009-04-29 07:59:10 +05:00
parent e4d4226efa 8dafd2b95d
commit 08690ef254
14 changed files with 564 additions and 526 deletions
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50
sql/sql_select.cc
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@ -3476,14 +3476,6 @@ add_key_fields(JOIN *join, KEY_FIELD **key_fields, uint *and_level,
}
}
/**
Add all keys with uses 'field' for some keypart.
If field->and_level != and_level then only mark key_part as const_part.
@todo
ft-keys in non-ft queries. SerG
*/
static uint
max_part_bit(key_part_map bits)
@ -3493,7 +3485,16 @@ max_part_bit(key_part_map bits)
return found;
}
static void
/*
Add all keys with uses 'field' for some keypart
If field->and_level != and_level then only mark key_part as const_part
RETURN
0 - OK
1 - Out of memory.
*/
static bool
add_key_part(DYNAMIC_ARRAY *keyuse_array,KEY_FIELD *key_field)
{
Field *field=key_field->field;
@ -3523,24 +3524,26 @@ add_key_part(DYNAMIC_ARRAY *keyuse_array,KEY_FIELD *key_field)
keyuse.optimize= key_field->optimize & KEY_OPTIMIZE_REF_OR_NULL;
keyuse.null_rejecting= key_field->null_rejecting;
keyuse.cond_guard= key_field->cond_guard;
VOID(insert_dynamic(keyuse_array,(uchar*) &keyuse));
if (insert_dynamic(keyuse_array,(uchar*) &keyuse))
return TRUE;
}
}
}
}
return FALSE;
}
#define FT_KEYPART (MAX_REF_PARTS+10)
static void
static bool
add_ft_keys(DYNAMIC_ARRAY *keyuse_array,
JOIN_TAB *stat,COND *cond,table_map usable_tables)
{
Item_func_match *cond_func=NULL;
if (!cond)
return;
return FALSE;
if (cond->type() == Item::FUNC_ITEM)
{
@ -3574,13 +3577,16 @@ add_ft_keys(DYNAMIC_ARRAY *keyuse_array,
{
Item *item;
while ((item=li++))
add_ft_keys(keyuse_array,stat,item,usable_tables);
{
if (add_ft_keys(keyuse_array,stat,item,usable_tables))
return TRUE;
}
}
}
if (!cond_func || cond_func->key == NO_SUCH_KEY ||
!(usable_tables & cond_func->table->map))
return;
return FALSE;
KEYUSE keyuse;
keyuse.table= cond_func->table;
@ -3590,7 +3596,7 @@ add_ft_keys(DYNAMIC_ARRAY *keyuse_array,
keyuse.used_tables=cond_func->key_item()->used_tables();
keyuse.optimize= 0;
keyuse.keypart_map= 0;
VOID(insert_dynamic(keyuse_array,(uchar*) &keyuse));
return insert_dynamic(keyuse_array,(uchar*) &keyuse);
}
@ -3744,7 +3750,8 @@ update_ref_and_keys(THD *thd, DYNAMIC_ARRAY *keyuse,JOIN_TAB *join_tab,
sargables);
for (; field != end ; field++)
{
add_key_part(keyuse,field);
if (add_key_part(keyuse,field))
return TRUE;
/* Mark that we can optimize LEFT JOIN */
if (field->val->type() == Item::NULL_ITEM &&
!field->field->real_maybe_null())
@ -3782,11 +3789,15 @@ update_ref_and_keys(THD *thd, DYNAMIC_ARRAY *keyuse,JOIN_TAB *join_tab,
/* fill keyuse with found key parts */
for ( ; field != end ; field++)
add_key_part(keyuse,field);
{
if (add_key_part(keyuse,field))
return TRUE;
}
if (select_lex->ftfunc_list->elements)
{
add_ft_keys(keyuse,join_tab,cond,normal_tables);
if (add_ft_keys(keyuse,join_tab,cond,normal_tables))
return TRUE;
}
/*
@ -3807,7 +3818,8 @@ update_ref_and_keys(THD *thd, DYNAMIC_ARRAY *keyuse,JOIN_TAB *join_tab,
(qsort_cmp) sort_keyuse);
bzero((char*) &key_end,sizeof(key_end)); /* Add for easy testing */
VOID(insert_dynamic(keyuse,(uchar*) &key_end));
if (insert_dynamic(keyuse,(uchar*) &key_end))
return TRUE;
use=save_pos=dynamic_element(keyuse,0,KEYUSE*);
prev= &key_end;