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Merge with MariaDB 5.1.49

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Removed references to HA_END_SPACE_KEY (which has been 0 for a long time)
This commit is contained in:
Michael Widenius
2010-08-05 22:56:11 +03:00
parent 3e610bc58d f0f2103695
commit d042146e5b
820 changed files with 37170 additions and 19216 deletions
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139
sql/opt_range.cc
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@ -1192,7 +1192,7 @@ QUICK_RANGE_SELECT::~QUICK_RANGE_SELECT()
QUICK_INDEX_MERGE_SELECT::QUICK_INDEX_MERGE_SELECT(THD *thd_param,
TABLE *table)
:pk_quick_select(NULL), thd(thd_param)
:unique(NULL), pk_quick_select(NULL), thd(thd_param)
{
DBUG_ENTER("QUICK_INDEX_MERGE_SELECT::QUICK_INDEX_MERGE_SELECT");
index= MAX_KEY;
@ -1234,6 +1234,7 @@ QUICK_INDEX_MERGE_SELECT::~QUICK_INDEX_MERGE_SELECT()
List_iterator_fast<QUICK_RANGE_SELECT> quick_it(quick_selects);
QUICK_RANGE_SELECT* quick;
DBUG_ENTER("QUICK_INDEX_MERGE_SELECT::~QUICK_INDEX_MERGE_SELECT");
delete unique;
quick_it.rewind();
while ((quick= quick_it++))
quick->file= NULL;
@ -7593,8 +7594,8 @@ check_quick_keys(PARAM *param, uint idx, SEL_ARG *key_tree,
param->range_count++;
if (!tmp_min_flag && ! tmp_max_flag &&
(uint) key_tree->part+1 == param->table->key_info[keynr].key_parts &&
(param->table->key_info[keynr].flags & (HA_NOSAME | HA_END_SPACE_KEY)) ==
HA_NOSAME && min_key_length == max_key_length &&
(param->table->key_info[keynr].flags & HA_NOSAME) &&
min_key_length == max_key_length &&
!memcmp(param->min_key, param->max_key, min_key_length) &&
!param->first_null_comp)
{
@ -7883,7 +7884,7 @@ get_quick_keys(PARAM *param,QUICK_RANGE_SELECT *quick,KEY_PART *key,
{
KEY *table_key=quick->head->key_info+quick->index;
flag=EQ_RANGE;
if ((table_key->flags & (HA_NOSAME | HA_END_SPACE_KEY)) == HA_NOSAME &&
if ((table_key->flags & HA_NOSAME) &&
key->part == table_key->key_parts-1)
{
if (!(table_key->flags & HA_NULL_PART_KEY) ||
@ -7933,7 +7934,7 @@ bool QUICK_RANGE_SELECT::unique_key_range()
if ((tmp->flag & (EQ_RANGE | NULL_RANGE)) == EQ_RANGE)
{
KEY *key=head->key_info+index;
return ((key->flags & (HA_NOSAME | HA_END_SPACE_KEY)) == HA_NOSAME &&
return ((key->flags & HA_NOSAME) &&
key->key_length == tmp->min_length);
}
}
@ -8052,8 +8053,7 @@ QUICK_RANGE_SELECT *get_quick_select_for_ref(THD *thd, TABLE *table,
range->min_length= range->max_length= ref->key_length;
range->min_keypart_map= range->max_keypart_map=
make_prev_keypart_map(ref->key_parts);
range->flag= ((ref->key_length == key_info->key_length &&
(key_info->flags & HA_END_SPACE_KEY) == 0) ? EQ_RANGE : 0);
range->flag= (ref->key_length == key_info->key_length ? EQ_RANGE : 0);
if (!(quick->key_parts=key_part=(KEY_PART *)
alloc_root(&quick->alloc,sizeof(KEY_PART)*ref->key_parts)))
@ -8123,7 +8123,6 @@ int QUICK_INDEX_MERGE_SELECT::read_keys_and_merge()
List_iterator_fast<QUICK_RANGE_SELECT> cur_quick_it(quick_selects);
QUICK_RANGE_SELECT* cur_quick;
int result;
Unique *unique= 0;
handler *file= head->file;
DBUG_ENTER("QUICK_INDEX_MERGE_SELECT::read_keys_and_merge");
@ -8145,11 +8144,24 @@ int QUICK_INDEX_MERGE_SELECT::read_keys_and_merge()
if (cur_quick->init() || cur_quick->reset())
goto err;
unique= new Unique(refpos_order_cmp, (void *)file,
file->ref_length,
thd->variables.sortbuff_size);
if (!unique)
goto err;
if (unique == NULL)
{
DBUG_EXECUTE_IF("index_merge_may_not_create_a_Unique", abort(); );
DBUG_EXECUTE_IF("only_one_Unique_may_be_created",
DBUG_SET("+d,index_merge_may_not_create_a_Unique"); );
unique= new Unique(refpos_order_cmp, (void *)file,
file->ref_length,
thd->variables.sortbuff_size);
if (!unique)
goto err;
}
else
unique->reset();
DBUG_ASSERT(file->ref_length == unique->get_size());
DBUG_ASSERT(thd->variables.sortbuff_size == unique->get_max_in_memory_size());
for (;;)
{
while ((result= cur_quick->get_next()) == HA_ERR_END_OF_FILE)
@ -8193,7 +8205,6 @@ int QUICK_INDEX_MERGE_SELECT::read_keys_and_merge()
sequence.
*/
result= unique->get(head);
delete unique;
doing_pk_scan= FALSE;
/*
index_merge currently doesn't support "using index" at all
@ -8204,7 +8215,6 @@ int QUICK_INDEX_MERGE_SELECT::read_keys_and_merge()
DBUG_RETURN(result);
err:
delete unique;
head->disable_keyread();
DBUG_RETURN(1);
}
@ -8319,6 +8329,7 @@ int QUICK_ROR_INTERSECT_SELECT::get_next()
if ((error= quick->get_next()))
DBUG_RETURN(error);
}
quick->file->position(quick->record);
}
memcpy(last_rowid, quick->file->ref, head->file->ref_length);
last_rowid_count= 1;
@ -8502,8 +8513,6 @@ int QUICK_RANGE_SELECT::get_next()
{
int result;
KEY_MULTI_RANGE *mrange;
key_range *start_key;
key_range *end_key;
DBUG_ENTER("QUICK_RANGE_SELECT::get_next");
DBUG_ASSERT(multi_range_length && multi_range &&
(cur_range >= (QUICK_RANGE**) ranges.buffer) &&
@ -8543,26 +8552,9 @@ int QUICK_RANGE_SELECT::get_next()
mrange_slot < mrange_end;
mrange_slot++)
{
start_key= &mrange_slot->start_key;
end_key= &mrange_slot->end_key;
last_range= *(cur_range++);
start_key->key= (const uchar*) last_range->min_key;
start_key->length= last_range->min_length;
start_key->flag= ((last_range->flag & NEAR_MIN) ? HA_READ_AFTER_KEY :
(last_range->flag & EQ_RANGE) ?
HA_READ_KEY_EXACT : HA_READ_KEY_OR_NEXT);
start_key->keypart_map= last_range->min_keypart_map;
end_key->key= (const uchar*) last_range->max_key;
end_key->length= last_range->max_length;
/*
We use HA_READ_AFTER_KEY here because if we are reading on a key
prefix. We want to find all keys with this prefix.
*/
end_key->flag= (last_range->flag & NEAR_MAX ? HA_READ_BEFORE_KEY :
HA_READ_AFTER_KEY);
end_key->keypart_map= last_range->max_keypart_map;
last_range->make_min_endpoint(&mrange_slot->start_key);
last_range->make_max_endpoint(&mrange_slot->end_key);
mrange_slot->range_flag= last_range->flag;
}
@ -8586,51 +8578,54 @@ end:
/*
Get the next record with a different prefix.
SYNOPSIS
QUICK_RANGE_SELECT::get_next_prefix()
prefix_length length of cur_prefix
cur_prefix prefix of a key to be searched for
@param prefix_length length of cur_prefix
@param group_key_parts The number of key parts in the group prefix
@param cur_prefix prefix of a key to be searched for
DESCRIPTION
Each subsequent call to the method retrieves the first record that has a
prefix with length prefix_length different from cur_prefix, such that the
record with the new prefix is within the ranges described by
this->ranges. The record found is stored into the buffer pointed by
this->record.
The method is useful for GROUP-BY queries with range conditions to
discover the prefix of the next group that satisfies the range conditions.
Each subsequent call to the method retrieves the first record that has a
prefix with length prefix_length and which is different from cur_prefix,
such that the record with the new prefix is within the ranges described by
this->ranges. The record found is stored into the buffer pointed by
this->record. The method is useful for GROUP-BY queries with range
conditions to discover the prefix of the next group that satisfies the range
conditions.
@todo
TODO
This method is a modified copy of QUICK_RANGE_SELECT::get_next(), so both
methods should be unified into a more general one to reduce code
duplication.
RETURN
0 on success
HA_ERR_END_OF_FILE if returned all keys
other if some error occurred
@retval 0 on success
@retval HA_ERR_END_OF_FILE if returned all keys
@retval other if some error occurred
*/
int QUICK_RANGE_SELECT::get_next_prefix(uint prefix_length,
key_part_map keypart_map,
uint group_key_parts,
uchar *cur_prefix)
{
DBUG_ENTER("QUICK_RANGE_SELECT::get_next_prefix");
const key_part_map keypart_map= make_prev_keypart_map(group_key_parts);
for (;;)
{
int result;
key_range start_key, end_key;
if (last_range)
{
/*
Read the next record in the same range with prefix after cur_prefix.
*/
DBUG_ASSERT(cur_prefix != 0);
*/
DBUG_ASSERT(cur_prefix != NULL);
result= file->ha_index_read_map(record, cur_prefix, keypart_map,
HA_READ_AFTER_KEY);
if (result || (file->compare_key(file->end_range) <= 0))
if (result || last_range->max_keypart_map == 0)
DBUG_RETURN(result);
key_range previous_endpoint;
last_range->make_max_endpoint(&previous_endpoint, prefix_length, keypart_map);
if (file->compare_key(&previous_endpoint) <= 0)
DBUG_RETURN(0);
}
uint count= ranges.elements - (cur_range - (QUICK_RANGE**) ranges.buffer);
@ -8642,21 +8637,9 @@ int QUICK_RANGE_SELECT::get_next_prefix(uint prefix_length,
}
last_range= *(cur_range++);
start_key.key= (const uchar*) last_range->min_key;
start_key.length= min(last_range->min_length, prefix_length);
start_key.keypart_map= last_range->min_keypart_map & keypart_map;
start_key.flag= ((last_range->flag & NEAR_MIN) ? HA_READ_AFTER_KEY :
(last_range->flag & EQ_RANGE) ?
HA_READ_KEY_EXACT : HA_READ_KEY_OR_NEXT);
end_key.key= (const uchar*) last_range->max_key;
end_key.length= min(last_range->max_length, prefix_length);
end_key.keypart_map= last_range->max_keypart_map & keypart_map;
/*
We use READ_AFTER_KEY here because if we are reading on a key
prefix we want to find all keys with this prefix
*/
end_key.flag= (last_range->flag & NEAR_MAX ? HA_READ_BEFORE_KEY :
HA_READ_AFTER_KEY);
key_range start_key, end_key;
last_range->make_min_endpoint(&start_key, prefix_length, keypart_map);
last_range->make_max_endpoint(&end_key, prefix_length, keypart_map);
result= file->read_range_first(last_range->min_keypart_map ? &start_key : 0,
last_range->max_keypart_map ? &end_key : 0,
@ -8751,9 +8734,9 @@ bool QUICK_RANGE_SELECT::row_in_ranges()
}
/*
This is a hack: we inherit from QUICK_SELECT so that we can use the
This is a hack: we inherit from QUICK_RANGE_SELECT so that we can use the
get_next() interface, but we have to hold a pointer to the original
QUICK_SELECT because its data are used all over the place. What
QUICK_RANGE_SELECT because its data are used all over the place. What
should be done is to factor out the data that is needed into a base
class (QUICK_SELECT), and then have two subclasses (_ASC and _DESC)
which handle the ranges and implement the get_next() function. But
@ -10276,7 +10259,7 @@ QUICK_GROUP_MIN_MAX_SELECT(TABLE *table, JOIN *join_arg, bool have_min_arg,
uint use_index, double read_cost_arg,
ha_rows records_arg, uint key_infix_len_arg,
uchar *key_infix_arg, MEM_ROOT *parent_alloc)
:join(join_arg), index_info(index_info_arg),
:file(table->file), join(join_arg), index_info(index_info_arg),
group_prefix_len(group_prefix_len_arg),
group_key_parts(group_key_parts_arg), have_min(have_min_arg),
have_max(have_max_arg), seen_first_key(FALSE), doing_key_read(FALSE),
@ -10285,7 +10268,6 @@ QUICK_GROUP_MIN_MAX_SELECT(TABLE *table, JOIN *join_arg, bool have_min_arg,
max_functions_it(NULL)
{
head= table;
file= head->file;
index= use_index;
record= head->record[0];
tmp_record= head->record[1];
@ -10885,7 +10867,8 @@ int QUICK_GROUP_MIN_MAX_SELECT::next_prefix()
{
uchar *cur_prefix= seen_first_key ? group_prefix : NULL;
if ((result= quick_prefix_select->get_next_prefix(group_prefix_len,
make_prev_keypart_map(group_key_parts), cur_prefix)))
group_key_parts,
cur_prefix)))
DBUG_RETURN(result);
seen_first_key= TRUE;
}