~drizzle-trunk/drizzle/development

drop table if exists t1,t2,t3;

select * from (select 2) b;

2

2

SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;

ERROR 42S22: Unknown column 'a' in 'field list'

SELECT 1 as a FROM (SELECT a UNION SELECT 1) b;

ERROR 42S22: Unknown column 'a' in 'field list'

CREATE TABLE t1 (a int not null, b char (10) not null);

insert into t1 values(1,'a'),(2,'b'),(3,'c'),(3,'c');

CREATE TABLE t2 (a int not null, b char (10) not null);

insert into t2 values (3,'c'),(4,'d'),(5,'f'),(6,'e');

select t1.a,t3.y from t1,(select a as y from t2  where b='c') as t3  where t1.a = t3.y;

a	y

3	3

3	3

select t1.a,t3.a from t1,(select * from t2  where b='c') as t3  where t1.a = t3.a;

a	a

3	3

3	3

CREATE TABLE t3 (a int not null, b char (10) not null);

insert into t3 values (3,'f'),(4,'y'),(5,'z'),(6,'c');

select t1.a,t4.y from t1,(select t2.a as y from t2,(select t3.b from t3 where t3.a>3) as t5  where t2.b=t5.b) as t4  where t1.a = t4.y;

a	y

3	3

3	3

SELECT a FROM (SELECT 1 FROM (SELECT 1) a HAVING a=1) b;

ERROR 42S22: Unknown column 'a' in 'having clause'

SELECT a,b as a FROM (SELECT '1' as a,'2' as b) b  HAVING a=1;

ERROR 23000: Column 'a' in having clause is ambiguous

SELECT a,2 as a FROM (SELECT '1' as a) b HAVING a=2;

a	a

1	2

SELECT a,2 as a FROM (SELECT '1' as a) b HAVING a=1;

a	a

SELECT 1 FROM (SELECT 1) a WHERE a=2;

ERROR 42S22: Unknown column 'a' in 'where clause'

SELECT (SELECT 1) as a FROM (SELECT 1 FROM t1  HAVING a=1) as a;

ERROR 42S22: Unknown column 'a' in 'having clause'

select * from t1 as x1, (select * from t1) as x2;

a	b	a	b

1	a	1	a

2	b	1	a

3	c	1	a

3	c	1	a

1	a	2	b

2	b	2	b

3	c	2	b

3	c	2	b

1	a	3	c

2	b	3	c

3	c	3	c

3	c	3	c

1	a	3	c

2	b	3	c

3	c	3	c

3	c	3	c

explain select * from t1 as x1, (select * from t1) as x2;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	PRIMARY	x1	ALL	NULL	NULL	NULL	NULL	4	

1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	4	Using join buffer

2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	4	

drop table if exists  t2,t3;

select * from (select 1) as a;

1

1

select a from (select 1 as a) as b;

a

1

select 1 from (select 1) as a;

1

1

select * from (select * from t1 union select * from t1) a;

a	b

1	a

2	b

3	c

select * from (select * from t1 union all select * from t1) a;

a	b

1	a

2	b

3	c

3	c

1	a

2	b

3	c

3	c

select * from (select * from t1 union all select * from t1 limit 2) a;

a	b

1	a

2	b

explain select * from (select * from t1 union select * from t1) a;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	3	

2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	4	

3	UNION	t1	ALL	NULL	NULL	NULL	NULL	4	

NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	

explain select * from (select * from t1 union all select * from t1) a;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	8	

2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	4	

3	UNION	t1	ALL	NULL	NULL	NULL	NULL	4	

NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	

CREATE TABLE t2 (a int not null);

insert into t2 values(1);

select * from (select * from t1 where t1.a=(select a from t2 where t2.a=t1.a)) a;

a	b

1	a

select * from (select * from t1 where t1.a=(select t2.a from t2 where t2.a=t1.a) union select t1.a, t1.b from t1) a;

a	b

1	a

2	b

3	c

explain select * from (select t1.*, t2.a as t2a from t1,t2 where t1.a=t2.a) t1;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	PRIMARY	<derived2>	system	NULL	NULL	NULL	NULL	1	

2	DERIVED	t2	ALL	NULL	NULL	NULL	NULL	1	

2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	4	Using where; Using join buffer

drop table t1, t2;

create table t1(a int not null, t char(8), index(a));

SELECT * FROM (SELECT * FROM t1) as b ORDER BY a  ASC LIMIT 0,20;

a	t

1	1

2	2

3	3

4	4

5	5

6	6

7	7

8	8

9	9

10	10

11	11

12	12

13	13

14	14

15	15

16	16

17	17

18	18

19	19

20	20

explain select count(*) from t1 as tt1, (select * from t1) as tt2;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	PRIMARY	tt1	index	NULL	a	4	NULL	X	Using index

1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	X	Using join buffer

2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	X	

drop table t1;

SELECT * FROM (SELECT (SELECT * FROM (SELECT 1 as a) as a )) as b;

(SELECT * FROM (SELECT 1 as a) as a )

1

select * from (select 1 as a) b  left join (select 2 as a) c using(a);

a

1

SELECT * FROM (SELECT 1 UNION SELECT a) b;

ERROR 42S22: Unknown column 'a' in 'field list'

SELECT 1 as a FROM (SELECT a UNION SELECT 1) b;

ERROR 42S22: Unknown column 'a' in 'field list'

SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;

ERROR 42S22: Unknown column 'a' in 'field list'

select 1 from  (select 2) a order by 0;

ERROR 42S22: Unknown column '0' in 'order clause'

create table t1 (id int);

insert into t1 values (1),(2),(3);

describe select * from (select * from t1 group by id) bar;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	3	

2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	3	Using temporary; Using filesort

drop table t1;

create table t1 (mat_id INT NOT NULL AUTO_INCREMENT PRIMARY KEY, matintnum CHAR(6) NOT NULL, test INT NULL);

create table t2 (mat_id INT NOT NULL, pla_id INT NOT NULL);

insert into t1 values (NULL, 'a', 1), (NULL, 'b', 2), (NULL, 'c', 3), (NULL, 'd', 4), (NULL, 'e', 5), (NULL, 'f', 6), (NULL, 'g', 7), (NULL, 'h', 8), (NULL, 'i', 9);

insert into t2 values (1, 100), (1, 101), (1, 102), (2, 100), (2, 103), (2, 104), (3, 101), (3, 102), (3, 105);

SELECT STRAIGHT_JOIN d.pla_id, m2.mat_id FROM t1 m2 INNER JOIN (SELECT mp.pla_id, MIN(m1.matintnum) AS matintnum FROM t2 mp INNER JOIN t1 m1 ON mp.mat_id=m1.mat_id GROUP BY mp.pla_id) d ON d.matintnum=m2.matintnum;

pla_id	mat_id

100	1

101	1

102	1

103	2

104	2

105	3

SELECT STRAIGHT_JOIN d.pla_id, m2.test FROM t1 m2  INNER JOIN (SELECT mp.pla_id, MIN(m1.matintnum) AS matintnum FROM t2 mp INNER JOIN t1 m1 ON mp.mat_id=m1.mat_id GROUP BY mp.pla_id) d ON d.matintnum=m2.matintnum;

pla_id	test

100	1

101	1

102	1

103	2

104	2

105	3

explain SELECT STRAIGHT_JOIN d.pla_id, m2.mat_id FROM t1 m2 INNER JOIN (SELECT mp.pla_id, MIN(m1.matintnum) AS matintnum FROM t2 mp INNER JOIN t1 m1 ON mp.mat_id=m1.mat_id GROUP BY mp.pla_id) d ON d.matintnum=m2.matintnum;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	PRIMARY	m2	ALL	NULL	NULL	NULL	NULL	9	

1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	6	Using where; Using join buffer

2	DERIVED	mp	ALL	NULL	NULL	NULL	NULL	9	Using temporary; Using filesort

2	DERIVED	m1	eq_ref	PRIMARY	PRIMARY	4	test.mp.mat_id	1	

explain SELECT STRAIGHT_JOIN d.pla_id, m2.test FROM t1 m2  INNER JOIN (SELECT mp.pla_id, MIN(m1.matintnum) AS matintnum FROM t2 mp INNER JOIN t1 m1 ON mp.mat_id=m1.mat_id GROUP BY mp.pla_id) d ON d.matintnum=m2.matintnum;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	PRIMARY	m2	ALL	NULL	NULL	NULL	NULL	9	

1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	6	Using where; Using join buffer

2	DERIVED	mp	ALL	NULL	NULL	NULL	NULL	9	Using temporary; Using filesort

2	DERIVED	m1	eq_ref	PRIMARY	PRIMARY	4	test.mp.mat_id	1	

drop table t1,t2;

SELECT a.x FROM (SELECT 1 AS x) AS a HAVING a.x = 1;

x

1

create table t1 (a int);

insert into t1 values (1),(2),(3);

delete from (select * from t1);

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your Drizzle server version for the right syntax to use near '(select * from t1)' at line 1

insert into  (select * from t1) values (5);

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your Drizzle server version for the right syntax to use near '(select * from t1) values (5)' at line 1

drop table t1;

create table t1 (E1 INTEGER NOT NULL, E2 INTEGER NOT NULL, E3 INTEGER NOT NULL, PRIMARY KEY(E1)

);

insert into t1 VALUES(1,1,1), (2,2,1);

select count(*) from t1 INNER JOIN (SELECT A.E1, A.E2, A.E3 FROM t1 AS A WHERE A.E3 = (SELECT MAX(B.E3) FROM t1 AS B WHERE A.E2 = B.E2)) AS THEMAX ON t1.E1 = THEMAX.E2 AND t1.E1 = t1.E2;

count(*)

2

explain select count(*) from t1 INNER JOIN (SELECT A.E1, A.E2, A.E3 FROM t1 AS A WHERE A.E3 = (SELECT MAX(B.E3) FROM t1 AS B WHERE A.E2 = B.E2)) AS THEMAX ON t1.E1 = THEMAX.E2 AND t1.E1 = t1.E2;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	PRIMARY	t1	ALL	PRIMARY	NULL	NULL	NULL	2	Using where

1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer

2	DERIVED	A	ALL	NULL	NULL	NULL	NULL	2	Using where

3	DEPENDENT SUBQUERY	B	ALL	NULL	NULL	NULL	NULL	2	Using where

drop table t1;

create table t1 (a int);

insert into t1 values (1),(2);

select * from ( select * from t1 union select * from t1) a,(select * from t1 union select * from t1) b;

a	a

1	1

2	1

1	2

2	2

explain select * from ( select * from t1 union select * from t1) a,(select * from t1 union select * from t1) b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	2	

1	PRIMARY	<derived4>	ALL	NULL	NULL	NULL	NULL	2	Using join buffer

4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	2	

5	UNION	t1	ALL	NULL	NULL	NULL	NULL	2	

NULL	UNION RESULT	<union4,5>	ALL	NULL	NULL	NULL	NULL	NULL	

2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	2	

3	UNION	t1	ALL	NULL	NULL	NULL	NULL	2	

NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	

drop table t1;

CREATE TEMPORARY TABLE t1 (

OBJECTID int NOT NULL default 0,

SORTORDER int NOT NULL auto_increment,

KEY t1_SortIndex (SORTORDER),

KEY t1_IdIndex (OBJECTID)

) ENGINE=MyISAM;

CREATE TEMPORARY TABLE t2 (

ID int default NULL,

PARID int default NULL,

UNIQUE KEY t2_ID_IDX (ID),

KEY t2_PARID_IDX (PARID)

) engine=MyISAM;

INSERT INTO t2 VALUES (1000,0),(1001,0),(1002,0),(1003,0),(1008,1),(1009,1),(1010,1),(1011,1),(1016,2);

CREATE TEMPORARY TABLE t3 (

ID int default NULL,

DATA decimal(10,2) default NULL,

UNIQUE KEY t3_ID_IDX (ID)

) engine=MyISAM;

INSERT INTO t3 VALUES (1000,0.00),(1001,0.25),(1002,0.50),(1003,0.75),(1008,1.00),(1009,1.25),(1010,1.50),(1011,1.75);

select 497, TMP.ID, NULL from (select 497 as ID, MAX(t3.DATA) as DATA      from t1 join t2 on (t1.ObjectID = t2.ID) join t3 on (t1.ObjectID = t3.ID) group by t2.ParID order by DATA DESC) as TMP;

497	ID	NULL

drop table t1, t2, t3;

CREATE TABLE t1 (name char(1) default NULL, val int default NULL);

INSERT INTO t1 VALUES ('a',1),  ('a',2),  ('a',2),  ('a',2),  ('a',3),  ('a',6), ('a',7), ('a',11), ('a',11), ('a',12), ('a',13), ('a',13), ('a',20), ('b',2), ('b',3), ('b',4), ('b',5);

SELECT s.name, AVG(s.val) AS median FROM (SELECT x.name, x.val FROM t1 x, t1 y WHERE x.name=y.name GROUP BY x.name, x.val HAVING SUM(y.val <= x.val) >= COUNT(*)/2 AND SUM(y.val >= x.val) >= COUNT(*)/2) AS s GROUP BY s.name;

name	median

a	7.0000

b	3.5000

explain SELECT s.name, AVG(s.val) AS median FROM (SELECT x.name, x.val FROM t1 x, t1 y WHERE x.name=y.name GROUP BY x.name, x.val HAVING SUM(y.val <= x.val) >= COUNT(*)/2 AND SUM(y.val >= x.val) >= COUNT(*)/2) AS s GROUP BY s.name;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	3	Using temporary; Using filesort

2	DERIVED	x	ALL	NULL	NULL	NULL	NULL	17	Using temporary; Using filesort

2	DERIVED	y	ALL	NULL	NULL	NULL	NULL	17	Using where; Using join buffer

drop table t1;

create table t2 (a int, b int, primary key (a));

insert into t2 values (1,7),(2,7);

explain select a from t2 where a>1;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using where; Using index

explain select a from (select a from t2 where a>1) tt;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	PRIMARY	<derived2>	system	NULL	NULL	NULL	NULL	1	

2	DERIVED	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using where; Using index

drop table t2;

CREATE TABLE `t1` ( `itemid` int NOT NULL default 0, `grpid` varchar(15) NOT NULL default '', `vendor` int NOT NULL default 0, `date_` date NOT NULL default '1900-01-01', `price` decimal(12,2) NOT NULL default '0.00', PRIMARY KEY  (`itemid`,`grpid`,`vendor`,`date_`), KEY `itemid` (`itemid`,`vendor`), KEY `itemid_2` (`itemid`,`date_`));

insert into t1 values (128, 'rozn', 2, curdate(), 10),

(128, 'rozn', 1, curdate(), 10);

SELECT MIN(price) min, MAX(price) max, AVG(price) avg FROM (SELECT SUBSTRING( MAX(concat(date_,";",price)), 12) price FROM t1 WHERE itemid=128 AND  grpid='rozn' GROUP BY itemid, grpid, vendor) lastprices;

min	max	avg

10.00	10.00	10

DROP TABLE t1;

create table t1 (a integer, b integer);

insert into t1 values (1,4), (2,2),(2,2), (4,1),(4,1),(4,1),(4,1);

select distinct sum(b) from t1 group by a;

sum(b)

4

select distinct sum(b) from (select a,b from t1) y group by a;

sum(b)

4

drop table t1;

CREATE TABLE t1 (a char(10), b char(10));

INSERT INTO t1 VALUES ('root','localhost'), ('root','%');

SELECT * FROM (SELECT (SELECT a.a FROM t1 AS a WHERE a.a = b.a) FROM t1 AS b) AS c;

ERROR 21000: Subquery returns more than 1 row

DROP TABLE t1;

create table t1(a int);

create table t2(a int);

create table t3(a int);

insert into t1 values(1),(1);

insert into t2 values(2),(2);

insert into t3 values(3),(3);

select * from t1 union distinct select * from t2 union all select * from t3;

a

1

2

3

3

select * from (select * from t1 union distinct select * from t2 union all select * from t3) X;

a

1

2

3

3

drop table t1, t2, t3;

create table t1 (a int);

create table t2 (a int);

select * from (select * from t1,t2) foo;

a	a

drop table t1,t2;

create table t1 (ID int not null auto_increment,

DATA varchar(5) not null, primary key (ID));

create table t2 (ID int not null auto_increment,

DATA varchar(5) not null, FID int not null,

primary key (ID));

select A.* from (t1 inner join (select * from t2) as A on t1.ID = A.FID);

ID	DATA	FID

select t2.* from ((select * from t1) as A inner join t2 on A.ID = t2.FID);

ID	DATA	FID

select t2.* from (select * from t1) as A inner join t2 on A.ID = t2.FID;

ID	DATA	FID

drop table t1, t2;