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Kirill Smelkov
mariadb
Commits
791ae8d3
Commit
791ae8d3
authored
Jul 01, 2003
by
bell@sanja.is.com.ua
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merge
parents
0330f0cc
98ffed18
Changes
4
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4 changed files
with
65 additions
and
5 deletions
+65
-5
mysql-test/r/subselect.result
mysql-test/r/subselect.result
+12
-0
mysql-test/t/subselect.test
mysql-test/t/subselect.test
+11
-0
sql/sql_select.cc
sql/sql_select.cc
+41
-4
sql/sql_select.h
sql/sql_select.h
+1
-1
No files found.
mysql-test/r/subselect.result
View file @
791ae8d3
...
...
@@ -1200,3 +1200,15 @@ SELECT 'c373e9f5ad0791a0dab5444553544200' IN(SELECT t1.FOLDERID FROM t1 WHERE t1
'c373e9f5ad0791a0dab5444553544200' IN(SELECT t1.FOLDERID FROM t1 WHERE t1.PARENTID='2f6161e879db43c1a5b82c21ddc49089' AND t1.FOLDERNAME = 'Level1')
0
drop table t1;
create table t1 (a int, b int);
create table t2 (a int, b int);
create table t3 (a int, b int);
insert into t1 values (0,100),(1,2), (1,3), (2,2), (2,7), (2,-1), (3,10);
insert into t2 values (0,0), (1,1), (2,1), (3,1), (4,1);
insert into t3 values (3,3), (2,2), (1,1);
select a,(select count(distinct t1.b) as sum from t1,t2 where t1.a=t2.a and t2.b > 0 and t1.a <= t3.b group by t1.a order by sum limit 1) from t3;
a (select count(distinct t1.b) as sum from t1,t2 where t1.a=t2.a and t2.b > 0 and t1.a <= t3.b group by t1.a order by sum limit 1)
3 1
2 2
1 2
drop table t1,t2,t3;
mysql-test/t/subselect.test
View file @
791ae8d3
...
...
@@ -792,3 +792,14 @@ INSERT INTO t1 VALUES("2f6161e879db43c1a5b82c21ddc49089", "Default", "System", "
INSERT
INTO
t1
VALUES
(
"c373e9f5ad0791724315444553544200"
,
"AddDocumentTest"
,
"admin"
,
"2003-06-09 10:51:25"
,
"Movie Reviews"
,
"0"
,
"2003-06-09 10:51:25"
,
"admin"
,
"0"
,
"2f6161e879db43c1a5b82c21ddc49089"
,
"03eea05112b845949f3fd03278b5fe43"
,
NULL
);
SELECT
'c373e9f5ad0791a0dab5444553544200'
IN
(
SELECT
t1
.
FOLDERID
FROM
t1
WHERE
t1
.
PARENTID
=
'2f6161e879db43c1a5b82c21ddc49089'
AND
t1
.
FOLDERNAME
=
'Level1'
);
drop
table
t1
;
#
# alloc_group_fields() working
#
create
table
t1
(
a
int
,
b
int
);
create
table
t2
(
a
int
,
b
int
);
create
table
t3
(
a
int
,
b
int
);
insert
into
t1
values
(
0
,
100
),(
1
,
2
),
(
1
,
3
),
(
2
,
2
),
(
2
,
7
),
(
2
,
-
1
),
(
3
,
10
);
insert
into
t2
values
(
0
,
0
),
(
1
,
1
),
(
2
,
1
),
(
3
,
1
),
(
4
,
1
);
insert
into
t3
values
(
3
,
3
),
(
2
,
2
),
(
1
,
1
);
select
a
,(
select
count
(
distinct
t1
.
b
)
as
sum
from
t1
,
t2
where
t1
.
a
=
t2
.
a
and
t2
.
b
>
0
and
t1
.
a
<=
t3
.
b
group
by
t1
.
a
order
by
sum
limit
1
)
from
t3
;
drop
table
t1
,
t2
,
t3
;
s
sql/sql_select.cc
View file @
791ae8d3
...
...
@@ -137,6 +137,7 @@ static ORDER *create_distinct_group(THD *thd, ORDER *order,
static
bool
test_if_subpart
(
ORDER
*
a
,
ORDER
*
b
);
static
TABLE
*
get_sort_by_table
(
ORDER
*
a
,
ORDER
*
b
,
TABLE_LIST
*
tables
);
static
void
calc_group_buffer
(
JOIN
*
join
,
ORDER
*
group
);
static
bool
make_group_fields
(
JOIN
*
main_join
,
JOIN
*
curr_join
);
static
bool
alloc_group_fields
(
JOIN
*
join
,
ORDER
*
group
);
// Create list for using with tempory table
static
bool
change_to_use_tmp_fields
(
THD
*
thd
,
Item
**
ref_pointer_array
,
...
...
@@ -1114,12 +1115,12 @@ JOIN::exec()
DBUG_VOID_RETURN
;
curr_join
->
exec_tmp_table2
=
exec_tmp_table2
;
}
if
(
group_list
)
if
(
curr_join
->
group_list
)
{
thd
->
proc_info
=
"Creating sort index"
;
if
(
create_sort_index
(
thd
,
curr_join
->
join_tab
,
curr_join
->
group_list
,
HA_POS_ERROR
,
HA_POS_ERROR
)
||
alloc_group_fields
(
curr_join
,
curr_join
->
group_list
))
make_group_fields
(
this
,
curr_join
))
{
DBUG_VOID_RETURN
;
}
...
...
@@ -1186,7 +1187,10 @@ JOIN::exec()
if
(
curr_join
->
group
||
curr_join
->
tmp_table_param
.
sum_func_count
||
(
procedure
&&
(
procedure
->
flags
&
PROC_GROUP
)))
{
alloc_group_fields
(
curr_join
,
curr_join
->
group_list
);
if
(
make_group_fields
(
this
,
curr_join
))
{
DBUG_VOID_RETURN
;
}
if
(
!
items3
)
{
if
(
!
items0
)
...
...
@@ -7561,6 +7565,37 @@ calc_group_buffer(JOIN *join,ORDER *group)
join
->
tmp_table_param
.
group_null_parts
=
null_parts
;
}
/*
alloc group fields or take prepared (chached)
SYNOPSYS
make_group_fields()
main_join - join of current select
curr_join - current join (join of current select or temporary copy of it)
RETURN
0 - ok
1 - failed
*/
static
bool
make_group_fields
(
JOIN
*
main_join
,
JOIN
*
curr_join
)
{
if
(
main_join
->
group_fields_cache
.
elements
)
{
curr_join
->
group_fields
=
main_join
->
group_fields_cache
;
curr_join
->
sort_and_group
=
1
;
}
else
{
if
(
alloc_group_fields
(
curr_join
,
curr_join
->
group_list
))
{
return
(
1
);
}
main_join
->
group_fields_cache
=
curr_join
->
group_fields
;
}
return
(
0
);
}
/*
Get a list of buffers for saveing last group
...
...
@@ -7587,6 +7622,7 @@ alloc_group_fields(JOIN *join,ORDER *group)
static
int
test_if_group_changed
(
List
<
Item_buff
>
&
list
)
{
DBUG_ENTER
(
"test_if_group_changed"
);
List_iterator
<
Item_buff
>
li
(
list
);
int
idx
=
-
1
,
i
;
Item_buff
*
buff
;
...
...
@@ -7596,7 +7632,8 @@ test_if_group_changed(List<Item_buff> &list)
if
(
buff
->
cmp
())
idx
=
i
;
}
return
idx
;
DBUG_PRINT
(
"info"
,
(
"idx: %d"
,
idx
));
DBUG_RETURN
(
idx
);
}
...
...
sql/sql_select.h
View file @
791ae8d3
...
...
@@ -137,7 +137,7 @@ class JOIN :public Sql_alloc
POSITION
positions
[
MAX_TABLES
+
1
],
best_positions
[
MAX_TABLES
+
1
];
double
best_read
;
List
<
Item
>
*
fields
;
List
<
Item_buff
>
group_fields
;
List
<
Item_buff
>
group_fields
,
group_fields_cache
;
TABLE
*
tmp_table
;
// used to store 2 possible tmp table of SELECT
TABLE
*
exec_tmp_table1
,
*
exec_tmp_table2
;
...
...
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