3
drop table if exists t1,t2,t3;
6
select * from (select 2) b;
7
SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;
8
SELECT 1 as a FROM (SELECT a UNION SELECT 1) b;
9
CREATE TABLE t1 (a int not null, b char (10) not null);
10
insert into t1 values(1,'a'),(2,'b'),(3,'c'),(3,'c');
11
CREATE TABLE t2 (a int not null, b char (10) not null);
12
insert into t2 values (3,'c'),(4,'d'),(5,'f'),(6,'e');
13
select t1.a,t3.y from t1,(select a as y from t2 where b='c') as t3 where t1.a = t3.y;
14
select t1.a,t3.a from t1,(select * from t2 where b='c') as t3 where t1.a = t3.a;
15
CREATE TABLE t3 (a int not null, b char (10) not null);
16
insert into t3 values (3,'f'),(4,'y'),(5,'z'),(6,'c');
17
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;
19
SELECT a FROM (SELECT 1 FROM (SELECT 1) a HAVING a=1) b;
21
SELECT a,b as a FROM (SELECT '1' as a,'2' as b) b HAVING a=1;
22
SELECT a,2 as a FROM (SELECT '1' as a) b HAVING a=2;
23
SELECT a,2 as a FROM (SELECT '1' as a) b HAVING a=1;
25
SELECT 1 FROM (SELECT 1) a WHERE a=2;
27
SELECT (SELECT 1) as a FROM (SELECT 1 FROM t1 HAVING a=1) as a;
28
select * from t1 as x1, (select * from t1) as x2;
29
explain select * from t1 as x1, (select * from t1) as x2;
30
drop table if exists t2,t3;
31
select * from (select 1) as a;
32
select a from (select 1 as a) as b;
33
select 1 from (select 1) as a;
34
select * from (select * from t1 union select * from t1) a;
35
select * from (select * from t1 union all select * from t1) a;
36
select * from (select * from t1 union all select * from t1 limit 2) a;
37
explain select * from (select * from t1 union select * from t1) a;
38
explain select * from (select * from t1 union all select * from t1) a;
39
CREATE TABLE t2 (a int not null);
40
insert into t2 values(1);
41
select * from (select * from t1 where t1.a=(select a from t2 where t2.a=t1.a)) a;
42
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;
43
explain select * from (select t1.*, t2.a as t2a from t1,t2 where t1.a=t2.a) t1;
45
create table t1(a int not null, t char(8), index(a));
51
eval insert into t1 values ($1,'$1');
56
SELECT * FROM (SELECT * FROM t1) as b ORDER BY a ASC LIMIT 0,20;
58
explain select count(*) from t1 as tt1, (select * from t1) as tt2;
60
SELECT * FROM (SELECT (SELECT * FROM (SELECT 1 as a) as a )) as b;
61
select * from (select 1 as a) b left join (select 2 as a) c using(a);
63
SELECT * FROM (SELECT 1 UNION SELECT a) b;
65
SELECT 1 as a FROM (SELECT a UNION SELECT 1) b;
67
SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;
69
select 1 from (select 2) a order by 0;
72
# Test of explain (bug #251)
75
create table t1 (id int);
76
insert into t1 values (1),(2),(3);
77
describe select * from (select * from t1 group by id) bar;
81
# test->used_keys test for derived tables
83
create table t1 (mat_id INT NOT NULL AUTO_INCREMENT PRIMARY KEY, matintnum CHAR(6) NOT NULL, test INT NULL);
84
create table t2 (mat_id INT NOT NULL, pla_id INT NOT NULL);
85
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);
86
insert into t2 values (1, 100), (1, 101), (1, 102), (2, 100), (2, 103), (2, 104), (3, 101), (3, 102), (3, 105);
88
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;
89
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;
91
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;
92
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;
96
# derived table reference
98
SELECT a.x FROM (SELECT 1 AS x) AS a HAVING a.x = 1;
101
# UPDATE/DELETE/INSERT of derived tables
103
create table t1 (a int);
104
insert into t1 values (1),(2),(3);
105
delete from (select * from t1);
106
insert into (select * from t1) values (5);
110
# deived tables with subquery inside all by one table
112
create table t1 (E1 INTEGER NOT NULL, E2 INTEGER NOT NULL, E3 INTEGER NOT NULL, PRIMARY KEY(E1)
114
insert into t1 VALUES(1,1,1), (2,2,1);
115
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
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;
119
create table t1 (a int);
120
insert into t1 values (1),(2);
121
select * from ( select * from t1 union select * from t1) a,(select * from t1 union select * from t1) b;
122
explain select * from ( select * from t1 union select * from t1) a,(select * from t1 union select * from t1) b;
126
# correct lex->current_select
128
CREATE TEMPORARY TABLE t1 (
129
OBJECTID int NOT NULL default 0,
130
SORTORDER int NOT NULL auto_increment,
131
KEY t1_SortIndex (SORTORDER),
132
KEY t1_IdIndex (OBJECTID)
134
CREATE TEMPORARY TABLE t2 (
136
PARID int default NULL,
137
UNIQUE KEY t2_ID_IDX (ID),
138
KEY t2_PARID_IDX (PARID)
140
INSERT INTO t2 VALUES (1000,0),(1001,0),(1002,0),(1003,0),(1008,1),(1009,1),(1010,1),(1011,1),(1016,2);
141
CREATE TEMPORARY TABLE t3 (
143
DATA decimal(10,2) default NULL,
144
UNIQUE KEY t3_ID_IDX (ID)
146
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);
147
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;
148
drop table t1, t2, t3;
153
CREATE TABLE t1 (name char(1) default NULL, val int default NULL);
154
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);
155
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;
156
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;
160
# "Using index" in explain
162
create table t2 (a int, b int, primary key (a));
163
insert into t2 values (1,7),(2,7);
164
explain select a from t2 where a>1;
165
explain select a from (select a from t2 where a>1) tt;
169
# select list counter
171
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_`));
172
insert into t1 values (128, 'rozn', 2, curdate(), 10),
173
(128, 'rozn', 1, curdate(), 10);
174
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;
178
# DISTINCT over grouped select on subquery in the FROM clause
180
create table t1 (a integer, b integer);
181
insert into t1 values (1,4), (2,2),(2,2), (4,1),(4,1),(4,1),(4,1);
182
select distinct sum(b) from t1 group by a;
183
select distinct sum(b) from (select a,b from t1) y group by a;
188
# Test for bug #7413 "Subquery with non-scalar results participating in
189
# select list of derived table crashes server" aka "VIEW with sub query can
190
# cause the MySQL server to crash". If we have encountered problem during
191
# filling of derived table we should report error and perform cleanup
194
CREATE TABLE t1 (a char(10), b char(10));
195
INSERT INTO t1 VALUES ('root','localhost'), ('root','%');
197
SELECT * FROM (SELECT (SELECT a.a FROM t1 AS a WHERE a.a = b.a) FROM t1 AS b) AS c;
200
# test of union subquery in the FROM clause with complex distinct/all (BUG#6565)
202
create table t1(a int);
203
create table t2(a int);
204
create table t3(a int);
205
insert into t1 values(1),(1);
206
insert into t2 values(2),(2);
207
insert into t3 values(3),(3);
208
select * from t1 union distinct select * from t2 union all select * from t3;
209
select * from (select * from t1 union distinct select * from t2 union all select * from t3) X;
210
drop table t1, t2, t3;
213
# Bug #11864 non unique names are allowed in subquery
215
create table t1 (a int);
216
create table t2 (a int);
217
select * from (select * from t1,t2) foo;
221
# Bug#10586 - query works with 4.1.8, but not with 4.1.11
223
create table t1 (ID int not null auto_increment,
224
DATA varchar(5) not null, primary key (ID));
225
create table t2 (ID int not null auto_increment,
226
DATA varchar(5) not null, FID int not null,
228
select A.* from (t1 inner join (select * from t2) as A on t1.ID = A.FID);
229
select t2.* from ((select * from t1) as A inner join t2 on A.ID = t2.FID);
230
select t2.* from (select * from t1) as A inner join t2 on A.ID = t2.FID;