2
drop table if exists t1,t2,t3;
4
select * from (select 2) b;
5
SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;
6
SELECT 1 as a FROM (SELECT a UNION SELECT 1) b;
7
CREATE TABLE t1 (a int not null, b char (10) not null);
8
insert into t1 values(1,'a'),(2,'b'),(3,'c'),(3,'c');
9
CREATE TABLE t2 (a int not null, b char (10) not null);
10
insert into t2 values (3,'c'),(4,'d'),(5,'f'),(6,'e');
11
select t1.a,t3.y from t1,(select a as y from t2 where b='c') as t3 where t1.a = t3.y;
12
select t1.a,t3.a from t1,(select * from t2 where b='c') as t3 where t1.a = t3.a;
13
CREATE TABLE t3 (a int not null, b char (10) not null);
14
insert into t3 values (3,'f'),(4,'y'),(5,'z'),(6,'c');
15
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;
17
SELECT a FROM (SELECT 1 FROM (SELECT 1) a HAVING a=1) b;
19
SELECT a,b as a FROM (SELECT '1' as a,'2' as b) b HAVING a=1;
20
SELECT a,2 as a FROM (SELECT '1' as a) b HAVING a=2;
21
SELECT a,2 as a FROM (SELECT '1' as a) b HAVING a=1;
23
SELECT 1 FROM (SELECT 1) a WHERE a=2;
25
SELECT (SELECT 1) as a FROM (SELECT 1 FROM t1 HAVING a=1) as a;
26
select * from t1 as x1, (select * from t1) as x2;
27
explain select * from t1 as x1, (select * from t1) as x2;
28
drop table if exists t2,t3;
29
select * from (select 1) as a;
30
select a from (select 1 as a) as b;
31
select 1 from (select 1) as a;
32
select * from (select * from t1 union select * from t1) a;
33
select * from (select * from t1 union all select * from t1) a;
34
select * from (select * from t1 union all select * from t1 limit 2) a;
35
explain select * from (select * from t1 union select * from t1) a;
36
explain select * from (select * from t1 union all select * from t1) a;
37
CREATE TABLE t2 (a int not null);
38
insert into t2 values(1);
39
select * from (select * from t1 where t1.a=(select a from t2 where t2.a=t1.a)) a;
40
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;
41
explain select * from (select t1.*, t2.a as t2a from t1,t2 where t1.a=t2.a) t1;
43
create table t1(a int not null, t char(8), index(a));
48
eval insert into t1 values ($1,'$1');
52
SELECT * FROM (SELECT * FROM t1) as b ORDER BY a ASC LIMIT 0,20;
54
explain select count(*) from t1 as tt1, (select * from t1) as tt2;
56
SELECT * FROM (SELECT (SELECT * FROM (SELECT 1 as a) as a )) as b;
57
select * from (select 1 as a) b left join (select 2 as a) c using(a);
59
SELECT * FROM (SELECT 1 UNION SELECT a) b;
61
SELECT 1 as a FROM (SELECT a UNION SELECT 1) b;
63
SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;
65
select 1 from (select 2) a order by 0;
68
# Test of explain (bug #251)
71
create table t1 (id int);
72
insert into t1 values (1),(2),(3);
73
describe select * from (select * from t1 group by id) bar;
77
# test->used_keys test for derived tables
79
create table t1 (mat_id INT NOT NULL AUTO_INCREMENT PRIMARY KEY, matintnum CHAR(6) NOT NULL, test INT NULL);
80
create table t2 (mat_id INT NOT NULL, pla_id INT NOT NULL);
81
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);
82
insert into t2 values (1, 100), (1, 101), (1, 102), (2, 100), (2, 103), (2, 104), (3, 101), (3, 102), (3, 105);
84
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;
85
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;
87
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;
88
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;
92
# derived table reference
94
SELECT a.x FROM (SELECT 1 AS x) AS a HAVING a.x = 1;
97
# UPDATE/DELETE/INSERT of derived tables
99
create table t1 (a int);
100
insert into t1 values (1),(2),(3);
101
update (select * from t1) as t1 set a = 5;
102
delete from (select * from t1);
103
insert into (select * from t1) values (5);
107
# deived tables with subquery inside all by one table
109
create table t1 (E1 INTEGER NOT NULL, E2 INTEGER NOT NULL, E3 INTEGER NOT NULL, PRIMARY KEY(E1)
111
insert into t1 VALUES(1,1,1), (2,2,1);
112
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;
113
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;
116
create table t1 (a int);
117
insert into t1 values (1),(2);
118
select * from ( select * from t1 union select * from t1) a,(select * from t1 union select * from t1) b;
119
explain select * from ( select * from t1 union select * from t1) a,(select * from t1 union select * from t1) b;
123
# multi-update & multi-delete with derived tables
126
`N` int NOT NULL default '0',
129
INSERT INTO `t1` (N, M) VALUES (1, 0),(1, 0),(1, 0),(2, 0),(2, 0),(3, 0);
130
UPDATE `t1` AS P1 INNER JOIN (SELECT N FROM `t1` GROUP BY N HAVING Count(M) > 1) AS P2 ON P1.N = P2.N SET P1.M = 2;
132
# TODO: Bug lp:311109
133
#UPDATE `t1` AS P1 INNER JOIN (SELECT N FROM `t1` GROUP BY N HAVING Count(M) > 1) AS P2 ON P1.N = P2.N SET P1.M = 2, P2.N = 2;
134
UPDATE `t1` AS P1 INNER JOIN (SELECT aaaa FROM `t1` GROUP BY N HAVING Count(M) > 1) AS P2 ON P1.N = P2.N SET P1.M = 2;
135
delete P1.* from `t1` AS P1 INNER JOIN (SELECT N FROM `t1` GROUP BY N HAVING Count(M) > 1) AS P2 ON P1.N = P2.N;
137
--replace_result P2 p2
138
# TODO: Bug lp:311111
139
#--error ER_NON_UPDATABLE_TABLE
140
#delete P1.*,P2.* from `t1` AS P1 INNER JOIN (SELECT N FROM `t1` GROUP BY N HAVING Count(M) > 1) AS P2 ON P1.N = P2.N;
141
delete P1.* from `t1` AS P1 INNER JOIN (SELECT aaa FROM `t1` GROUP BY N HAVING Count(M) > 1) AS P2 ON P1.N = P2.N;
145
# correct lex->current_select
148
OBJECTID int NOT NULL default 0,
149
SORTORDER int NOT NULL auto_increment,
150
KEY t1_SortIndex (SORTORDER),
151
KEY t1_IdIndex (OBJECTID)
155
PARID int default NULL,
156
UNIQUE KEY t2_ID_IDX (ID),
157
KEY t2_PARID_IDX (PARID)
159
INSERT INTO t2 VALUES (1000,0),(1001,0),(1002,0),(1003,0),(1008,1),(1009,1),(1010,1),(1011,1),(1016,2);
162
DATA decimal(10,2) default NULL,
163
UNIQUE KEY t3_ID_IDX (ID)
165
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);
166
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;
167
drop table t1, t2, t3;
172
CREATE TABLE t1 (name char(1) default NULL, val int default NULL);
173
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);
174
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;
175
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;
179
# "Using index" in explain
181
create table t2 (a int, b int, primary key (a));
182
insert into t2 values (1,7),(2,7);
183
explain select a from t2 where a>1;
184
explain select a from (select a from t2 where a>1) tt;
188
# select list counter
190
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_`));
191
insert into t1 values (128, 'rozn', 2, curdate(), 10),
192
(128, 'rozn', 1, curdate(), 10);
193
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;
197
# DISTINCT over grouped select on subquery in the FROM clause
199
create table t1 (a integer, b integer);
200
insert into t1 values (1,4), (2,2),(2,2), (4,1),(4,1),(4,1),(4,1);
201
select distinct sum(b) from t1 group by a;
202
select distinct sum(b) from (select a,b from t1) y group by a;
207
# Test for bug #7413 "Subquery with non-scalar results participating in
208
# select list of derived table crashes server" aka "VIEW with sub query can
209
# cause the MySQL server to crash". If we have encountered problem during
210
# filling of derived table we should report error and perform cleanup
213
CREATE TABLE t1 (a char(10), b char(10));
214
INSERT INTO t1 VALUES ('root','localhost'), ('root','%');
216
SELECT * FROM (SELECT (SELECT a.a FROM t1 AS a WHERE a.a = b.a) FROM t1 AS b) AS c;
219
# test of union subquery in the FROM clause with complex distinct/all (BUG#6565)
221
create table t1(a int);
222
create table t2(a int);
223
create table t3(a int);
224
insert into t1 values(1),(1);
225
insert into t2 values(2),(2);
226
insert into t3 values(3),(3);
227
select * from t1 union distinct select * from t2 union all select * from t3;
228
select * from (select * from t1 union distinct select * from t2 union all select * from t3) X;
229
drop table t1, t2, t3;
232
# Bug #11864 non unique names are allowed in subquery
234
create table t1 (a int);
235
create table t2 (a int);
236
select * from (select * from t1,t2) foo;
240
# Bug#10586 - query works with 4.1.8, but not with 4.1.11
242
create table t1 (ID int not null auto_increment,
243
DATA varchar(5) not null, primary key (ID));
244
create table t2 (ID int not null auto_increment,
245
DATA varchar(5) not null, FID int not null,
247
select A.* from (t1 inner join (select * from t2) as A on t1.ID = A.FID);
248
select t2.* from ((select * from t1) as A inner join t2 on A.ID = t2.FID);
249
select t2.* from (select * from t1) as A inner join t2 on A.ID = t2.FID;