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drop table if exists t1,t2,t3;
CREATE TABLE t1
(
FOLDERID VARCHAR(32)BINARY NOT NULL
, FOLDERNAME VARCHAR(255)BINARY NOT NULL
, CREATOR VARCHAR(255)BINARY
, CREATED TIMESTAMP NOT NULL
, DESCRIPTION VARCHAR(255)BINARY
, FOLDERTYPE INTEGER NOT NULL
, MODIFIED TIMESTAMP
, MODIFIER VARCHAR(255)BINARY
, FOLDERSIZE INTEGER NOT NULL
, PARENTID VARCHAR(32)BINARY
, REPID VARCHAR(32)BINARY
, ORIGINATOR INTEGER
, PRIMARY KEY ( FOLDERID )
) ENGINE=InnoDB;
CREATE INDEX FFOLDERID_IDX ON t1 (FOLDERID);
CREATE INDEX CMFLDRPARNT_IDX ON t1 (PARENTID);
INSERT INTO t1 VALUES("0c9aab05b15048c59bc35c8461507deb", "System", "System", "2003-06-05 16:30:00", "The system content repository folder.", "3", "2003-06-05 16:30:00", "System", "0", NULL, "9c9aab05b15048c59bc35c8461507deb", "1");
INSERT INTO t1 VALUES("2f6161e879db43c1a5b82c21ddc49089", "Default", "System", "2003-06-09 10:52:02", "The default content repository folder.", "3", "2003-06-05 16:30:00", "System", "0", NULL, "03eea05112b845949f3fd03278b5fe43", "1");
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');
'c373e9f5ad0791a0dab5444553544200' IN(SELECT t1.FOLDERID FROM t1 WHERE t1.PARENTID='2f6161e879db43c1a5b82c21ddc49089' AND t1.FOLDERNAME = 'Level1')
0
drop table t1;
create table t1 (a int) engine=innodb;
create table t2 (a int) engine=innodb;
create table t3 (a int) engine=innodb;
insert into t1 values (1),(2),(3),(4);
insert into t2 values (10),(20),(30),(40);
insert into t3 values (1),(2),(10),(50);
select a from t3 where t3.a in (select a from t1 where a <= 3 union select * from t2 where a <= 30);
a
1
2
10
drop table t1,t2,t3;
CREATE TABLE t1 (
processor_id INTEGER NOT NULL,
PRIMARY KEY (processor_id)
) ENGINE=InnoDB;
CREATE TABLE t3 (
yod_id BIGINT UNSIGNED AUTO_INCREMENT NOT NULL,
login_processor INTEGER UNSIGNED ,
PRIMARY KEY (yod_id)
) ENGINE=InnoDB;
CREATE TABLE t2 (
processor_id INTEGER NOT NULL,
yod_id BIGINT UNSIGNED NOT NULL,
PRIMARY KEY (processor_id, yod_id),
INDEX (processor_id),
INDEX (yod_id),
FOREIGN KEY (processor_id) REFERENCES t1(processor_id),
FOREIGN KEY (yod_id) REFERENCES t3(yod_id)
) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1),(2),(3);
INSERT INTO t3 VALUES (1,1),(2,2),(3,3);
INSERT INTO t2 VALUES (1,1),(2,2),(3,3);
SELECT distinct p1.processor_id, (SELECT y.yod_id FROM t1 p2, t2 y WHERE p2.processor_id = p1.processor_id and p2.processor_id = y.processor_id) FROM t1 p1;
processor_id (SELECT y.yod_id FROM t1 p2, t2 y WHERE p2.processor_id = p1.processor_id and p2.processor_id = y.processor_id)
1 1
2 2
3 3
drop table t2,t1,t3;
CREATE TABLE t1 (
id int(11) NOT NULL default '0',
b int(11) default NULL,
c char(3) default NULL,
PRIMARY KEY (id),
KEY t2i1 (b)
) ENGINE=innodb DEFAULT CHARSET=latin1;
INSERT INTO t1 VALUES (0,0,'GPL'),(1,0,'GPL'),(2,1,'GPL'),(3,2,'GPL');
CREATE TABLE t2 (
id int(11) NOT NULL default '0',
b int(11) default NULL,
c char(3) default NULL,
PRIMARY KEY (id),
KEY t2i (b)
) ENGINE=innodb DEFAULT CHARSET=latin1;
INSERT INTO t2 VALUES (0,0,'GPL'),(1,0,'GPL'),(2,1,'GPL'),(3,2,'GPL');
select (select max(id) from t2 where b=1 group by b) as x,b from t1 where b=1;
x b
2 1
drop table t1,t2;
create table t1 (id int not null, value char(255), primary key(id)) engine=innodb;
create table t2 (id int not null, value char(255)) engine=innodb;
insert into t1 values (1,'a'),(2,'b');
insert into t2 values (1,'z'),(2,'x');
select t2.id,t2.value,(select t1.value from t1 where t1.id=t2.id) from t2;
id value (select t1.value from t1 where t1.id=t2.id)
1 z a
2 x b
select t2.id,t2.value,(select t1.value from t1 where t1.id=t2.id) from t2;
id value (select t1.value from t1 where t1.id=t2.id)
1 z a
2 x b
drop table t1,t2;
create table t1 (a int, b int) engine=innodb;
insert into t1 values (1,2), (1,3), (2,3), (2,4), (2,5), (3,4), (4,5), (4,100);
create table t2 (a int) engine=innodb;
insert into t2 values (1),(2),(3),(4);
select a, sum(b) as b from t1 group by a having b > (select max(a) from t2);
a b
1 5
2 12
4 105
drop table t1, t2;
CREATE TABLE `t1` ( `unit` varchar(50) NOT NULL default '', `ingredient` varchar(50) NOT NULL default '') ENGINE=InnoDB DEFAULT CHARSET=latin1;
CREATE TABLE `t2` ( `ingredient` varchar(50) NOT NULL default '', `unit` varchar(50) NOT NULL default '', PRIMARY KEY (ingredient, unit)) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO `t1` VALUES ('xx','yy');
INSERT INTO `t2` VALUES ('yy','xx');
SELECT R.unit, R.ingredient FROM t1 R WHERE R.ingredient IN (SELECT N.ingredient FROM t2 N WHERE N.unit = R.unit);
unit ingredient
xx yy
drop table t1, t2;
CREATE TABLE t1 (
id INT NOT NULL auto_increment,
date1 DATE, coworkerid INT,
description VARCHAR(255),
sum_used DOUBLE,
sum_remaining DOUBLE,
comments VARCHAR(255),
PRIMARY KEY(id)
) engine=innodb;
insert into t1 values (NULL, '1999-01-01', 1,'test', 22, 33, 'comment'), (NULL, '1999-01-01', 1,'test', 22, 33, 'comment'), (NULL, '1999-01-01', 1,'test', 22, 33, 'comment'), (NULL, '1998-01-01', 1,'test', 22, 33, 'comment'), (NULL, '1998-01-01', 1,'test', 22, 33, 'comment'), (NULL, '2004-01-01', 1,'test', 22, 33, 'comment'), (NULL, '2004-01-01', 1,'test', 22, 33, 'comment');
SELECT DISTINCT
(SELECT sum(sum_used) FROM t1 WHERE sum_used > 0 AND year(date1) <= '2004') as somallontvangsten,
(SELECT sum(sum_used) FROM t1 WHERE sum_used < 0 AND year(date1) <= '2004') as somalluitgaven
FROM t1;
somallontvangsten somalluitgaven
154 NULL
select * from t1;
id date1 coworkerid description sum_used sum_remaining comments
1 1999-01-01 1 test 22 33 comment
2 1999-01-01 1 test 22 33 comment
3 1999-01-01 1 test 22 33 comment
4 1998-01-01 1 test 22 33 comment
5 1998-01-01 1 test 22 33 comment
6 2004-01-01 1 test 22 33 comment
7 2004-01-01 1 test 22 33 comment
drop table t1;
CREATE TABLE `t1` ( `a` char(3) NOT NULL default '', `b` char(3) NOT NULL default '', `c` char(3) NOT NULL default '', PRIMARY KEY (`a`,`b`,`c`)) ENGINE=InnoDB;
CREATE TABLE t2 LIKE t1;
INSERT INTO t1 VALUES (1,1,1);
INSERT INTO t2 VALUES (1,1,1);
PREPARE my_stmt FROM "SELECT t1.b, count(*) FROM t1 group by t1.b having
count(*) > ALL (SELECT COUNT(*) FROM t2 WHERE t2.a=1 GROUP By t2.b)";
EXECUTE my_stmt;
b count(*)
EXECUTE my_stmt;
b count(*)
deallocate prepare my_stmt;
drop table t1,t2;
CREATE TABLE t1 (
school_name varchar(45) NOT NULL,
country varchar(45) NOT NULL,
funds_requested float NOT NULL,
schooltype varchar(45) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
insert into t1 values ("the school", "USA", 1200, "Human");
select count(country) as countrycount, sum(funds_requested) as smcnt,
country, (select sum(funds_requested) from t1) as total_funds
from t1
group by country;
countrycount smcnt country total_funds
1 1200 USA 1200
select count(country) as countrycount, sum(funds_requested) as smcnt,
country, (select sum(funds_requested) from t1) as total_funds
from t1
group by country;
countrycount smcnt country total_funds
1 1200 USA 1200
drop table t1;
CREATE TABLE `t1` (
`t3_id` int NOT NULL,
`t1_id` int NOT NULL,
PRIMARY KEY (`t1_id`)
);
CREATE TABLE `t2` (
`t2_id` int NOT NULL,
`t1_id` int NOT NULL,
`b` int NOT NULL,
PRIMARY KEY (`t2_id`),
UNIQUE KEY `idx_t2_t1_b` (`t1_id`,`b`)
) ENGINE=InnoDB;
CREATE TABLE `t3` (
`t3_id` int NOT NULL
);
INSERT INTO `t3` VALUES (3);
select
(SELECT rs.t2_id
FROM t2 rs
WHERE rs.t1_id=
(SELECT lt.t1_id
FROM t1 lt
WHERE lt.t3_id=a.t3_id)
ORDER BY b DESC LIMIT 1)
from t3 AS a;
(SELECT rs.t2_id
FROM t2 rs
WHERE rs.t1_id=
(SELECT lt.t1_id
FROM t1 lt
WHERE lt.t3_id=a.t3_id)
ORDER BY b DESC LIMIT 1)
NULL
DROP PROCEDURE IF EXISTS p1;
create procedure p1()
begin
declare done int default 3;
repeat
select
(SELECT rs.t2_id
FROM t2 rs
WHERE rs.t1_id=
(SELECT lt.t1_id
FROM t1 lt
WHERE lt.t3_id=a.t3_id)
ORDER BY b DESC LIMIT 1) as x
from t3 AS a;
set done= done-1;
until done <= 0 end repeat;
end//
call p1();
x
NULL
x
NULL
x
NULL
call p1();
x
NULL
x
NULL
x
NULL
call p1();
x
NULL
x
NULL
x
NULL
drop procedure p1;
drop tables t1,t2,t3;
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