mirror of
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f015cbdc7e
Add ISAM to Windows version Fix of test results Fixes for NULL keys in HEAP tables. Docs/manual.texi: Changelog heap/hp_open.c: Add support for NULL=NULL in keys (for GROUP BY) heap/hp_rkey.c: Cleanup heap/hp_write.c: Cleanup include/config-win.h: Add ISAM to Windows version include/my_base.h: Add support for NULL=NULL in keys (for GROUP BY) libmysqld/Makefile.am: Rename of innobase to innodb myisam/mi_write.c: Add support for NULL=NULL in keys (for GROUP BY) BitKeeper/etc/ignore: Added libmysqld/ha_innodb.cc to the ignore list mysql-test/r/group_by.result: Test of NULL keys in HEAP tables mysql-test/r/heap.result: Test of NULL keys in HEAP tables mysql-test/r/null.result: Cleanup mysql-test/r/order_by.result: Fix for result of new ORDER BY optimization mysql-test/t/group_by.test: Test of NULL keys in HEAP tables mysql-test/t/heap.test: Test of NULL keys in HEAP tables mysql-test/t/null.test: Cleanup sql/ha_heap.cc: Add support of NULL keys sql/item_strfunc.h: Fix for BINARY and CAST functions sql/item_timefunc.h: Fix for BINARY and CAST functions sql/sql_parse.cc: Cleanup sql/sql_select.cc: Add support for NULL=NULL in keys (for GROUP BY)
473 lines
14 KiB
Text
473 lines
14 KiB
Text
drop table if exists t1,t2,t3;
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CREATE TABLE t1 (
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id int(6) DEFAULT '0' NOT NULL,
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idservice int(5),
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clee char(20) NOT NULL,
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flag char(1),
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KEY id (id),
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PRIMARY KEY (clee)
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);
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INSERT INTO t1 VALUES (2,4,'6067169d','Y');
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INSERT INTO t1 VALUES (2,5,'606716d1','Y');
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INSERT INTO t1 VALUES (2,1,'606717c1','Y');
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INSERT INTO t1 VALUES (3,1,'6067178d','Y');
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INSERT INTO t1 VALUES (2,6,'60671515','Y');
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INSERT INTO t1 VALUES (2,7,'60671569','Y');
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INSERT INTO t1 VALUES (2,3,'dd','Y');
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CREATE TABLE t2 (
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id int(6) DEFAULT '0' NOT NULL auto_increment,
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description varchar(40) NOT NULL,
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idform varchar(40),
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ordre int(6) unsigned DEFAULT '0' NOT NULL,
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image varchar(60),
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PRIMARY KEY (id),
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KEY id (id,ordre)
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);
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INSERT INTO t2 VALUES (1,'Emettre un appel d''offres','en_construction.html',10,'emettre.gif');
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INSERT INTO t2 VALUES (2,'Emettre des soumissions','en_construction.html',20,'emettre.gif');
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INSERT INTO t2 VALUES (7,'Liste des t2','t2_liste_form.phtml',51060,'link.gif');
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INSERT INTO t2 VALUES (8,'Consulter les soumissions','consulter_soumissions.phtml',200,'link.gif');
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INSERT INTO t2 VALUES (9,'Ajouter un type de materiel','typeMateriel_ajoute_form.phtml',51000,'link.gif');
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INSERT INTO t2 VALUES (10,'Lister/modifier un type de materiel','typeMateriel_liste_form.phtml',51010,'link.gif');
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INSERT INTO t2 VALUES (3,'Créer une fiche de client','clients_ajoute_form.phtml',40000,'link.gif');
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INSERT INTO t2 VALUES (4,'Modifier des clients','en_construction.html',40010,'link.gif');
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INSERT INTO t2 VALUES (5,'Effacer des clients','en_construction.html',40020,'link.gif');
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INSERT INTO t2 VALUES (6,'Ajouter un service','t2_ajoute_form.phtml',51050,'link.gif');
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select t1.id,t1.idservice,t2.ordre,t2.description from t1, t2 where t1.id = 2 and t1.idservice = t2.id order by t2.ordre;
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id idservice ordre description
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2 1 10 Emettre un appel d'offres
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2 3 40000 Créer une fiche de client
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2 4 40010 Modifier des clients
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2 5 40020 Effacer des clients
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2 6 51050 Ajouter un service
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2 7 51060 Liste des t2
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drop table t1,t2;
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create table t1 (first char(10),last char(10));
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insert into t1 values ("Michael","Widenius");
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insert into t1 values ("Allan","Larsson");
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insert into t1 values ("David","Axmark");
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select concat(first," ",last) as name from t1 order by name;
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name
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Allan Larsson
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David Axmark
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Michael Widenius
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select concat(last," ",first) as name from t1 order by name;
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name
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Axmark David
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Larsson Allan
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Widenius Michael
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drop table t1;
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create table t1 (i int);
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insert into t1 values(1),(2),(1),(2),(1),(2),(3);
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select distinct i from t1;
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i
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1
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2
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3
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select distinct i from t1 order by rand(5);
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i
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1
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3
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2
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select distinct i from t1 order by i desc;
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i
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3
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2
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1
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select distinct i from t1 order by 1-i;
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i
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3
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2
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1
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select distinct i from t1 order by mod(i,2),i;
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i
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2
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1
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3
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drop table t1;
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create table t1 (id int not null,col1 int not null,col2 int not null,index(col1));
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insert into t1 values(1,2,2),(2,2,1),(3,1,2),(4,1,1),(5,1,4),(6,2,3),(7,3,1),(8,2,4);
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select * from t1 order by col1,col2;
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id col1 col2
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4 1 1
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3 1 2
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5 1 4
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2 2 1
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1 2 2
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6 2 3
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8 2 4
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7 3 1
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select col1 from t1 order by id;
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col1
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2
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2
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1
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1
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1
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2
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3
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2
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select col1 as id from t1 order by t1.id;
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id
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1
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1
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1
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2
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2
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2
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2
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3
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select concat(col1) as id from t1 order by t1.id;
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id
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2
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2
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1
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1
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1
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2
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3
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2
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drop table t1;
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CREATE TABLE t1 (id int auto_increment primary key,aika varchar(40),aikakentta timestamp);
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insert into t1 (aika) values ('Keskiviikko');
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insert into t1 (aika) values ('Tiistai');
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insert into t1 (aika) values ('Maanantai');
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insert into t1 (aika) values ('Sunnuntai');
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SELECT FIELD(SUBSTRING(t1.aika,1,2),'Ma','Ti','Ke','To','Pe','La','Su') AS test FROM t1 ORDER by test;
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test
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1
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2
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3
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7
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drop table t1;
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CREATE TABLE t1
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(
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a int unsigned NOT NULL,
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b int unsigned NOT NULL,
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c int unsigned NOT NULL,
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UNIQUE(a),
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INDEX(b),
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INDEX(c)
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);
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CREATE TABLE t2
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(
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c int unsigned NOT NULL,
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i int unsigned NOT NULL,
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INDEX(c)
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);
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CREATE TABLE t3
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(
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c int unsigned NOT NULL,
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v varchar(64),
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INDEX(c)
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);
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INSERT INTO t1 VALUES (1,1,1);
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INSERT INTO t1 VALUES (2,1,2);
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INSERT INTO t1 VALUES (3,2,1);
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INSERT INTO t1 VALUES (4,2,2);
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INSERT INTO t2 VALUES (1,50);
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INSERT INTO t2 VALUES (2,25);
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INSERT INTO t3 VALUES (1,'123 Park Place');
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INSERT INTO t3 VALUES (2,'453 Boardwalk');
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SELECT a,b,if(b = 1,i,if(b = 2,v,''))
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FROM t1
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LEFT JOIN t2 USING(c)
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LEFT JOIN t3 ON t3.c = t1.c;
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a b if(b = 1,i,if(b = 2,v,''))
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1 1 50
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2 1 25
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3 2 123 Park Place
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4 2 453 Boardwalk
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SELECT a,b,if(b = 1,i,if(b = 2,v,''))
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FROM t1
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LEFT JOIN t2 USING(c)
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LEFT JOIN t3 ON t3.c = t1.c
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ORDER BY a;
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a b if(b = 1,i,if(b = 2,v,''))
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1 1 50
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2 1 25
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3 2 123 Park Place
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4 2 453 Boardwalk
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drop table t1,t2,t3;
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create table t1 (ID int not null primary key, TransactionID int not null);
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insert into t1 (ID, TransactionID) values (1, 87), (2, 89), (3, 92), (4, 94), (5, 486), (6, 490), (7, 753), (9, 828), (10, 832), (11, 834), (12, 840);
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create table t2 (ID int not null primary key, GroupID int not null);
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insert into t2 (ID, GroupID) values (87, 87), (89, 89), (92, 92), (94, 94), (486, 486), (490, 490),(753, 753), (828, 828), (832, 832), (834, 834), (840, 840);
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create table t3 (ID int not null primary key, DateOfAction date not null);
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insert into t3 (ID, DateOfAction) values (87, '1999-07-19'), (89, '1999-07-19'), (92, '1999-07-19'), (94, '1999-07-19'), (486, '1999-07-18'), (490, '2000-03-27'), (753, '2000-03-28'), (828, '1999-07-27'), (832, '1999-07-27'),(834, '1999-07-27'), (840, '1999-07-27');
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select t3.DateOfAction, t1.TransactionID from t1 join t2 join t3 where t2.ID = t1.TransactionID and t3.ID = t2.GroupID order by t3.DateOfAction, t1.TransactionID;
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DateOfAction TransactionID
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1999-07-18 486
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1999-07-19 87
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1999-07-19 89
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1999-07-19 92
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1999-07-19 94
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1999-07-27 828
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1999-07-27 832
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1999-07-27 834
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1999-07-27 840
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2000-03-27 490
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2000-03-28 753
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select t3.DateOfAction, t1.TransactionID from t1 join t2 join t3 where t2.ID = t1.TransactionID and t3.ID = t2.GroupID order by t1.TransactionID,t3.DateOfAction;
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DateOfAction TransactionID
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1999-07-19 87
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1999-07-19 89
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1999-07-19 92
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1999-07-19 94
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1999-07-18 486
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2000-03-27 490
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2000-03-28 753
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1999-07-27 828
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1999-07-27 832
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1999-07-27 834
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1999-07-27 840
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drop table t1,t2,t3;
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drop table if exists t1;
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CREATE TABLE t1 (
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member_id int(11) NOT NULL auto_increment,
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inschrijf_datum varchar(20) NOT NULL default '',
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lastchange_datum varchar(20) NOT NULL default '',
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nickname varchar(20) NOT NULL default '',
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password varchar(8) NOT NULL default '',
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voornaam varchar(30) NOT NULL default '',
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tussenvoegsels varchar(10) NOT NULL default '',
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achternaam varchar(50) NOT NULL default '',
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straat varchar(100) NOT NULL default '',
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postcode varchar(10) NOT NULL default '',
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wijk varchar(40) NOT NULL default '',
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plaats varchar(50) NOT NULL default '',
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telefoon varchar(10) NOT NULL default '',
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geboortedatum date NOT NULL default '0000-00-00',
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geslacht varchar(5) NOT NULL default '',
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email varchar(80) NOT NULL default '',
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uin varchar(15) NOT NULL default '',
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homepage varchar(100) NOT NULL default '',
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internet varchar(15) NOT NULL default '',
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scherk varchar(30) NOT NULL default '',
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favo_boek varchar(50) NOT NULL default '',
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favo_tijdschrift varchar(50) NOT NULL default '',
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favo_tv varchar(50) NOT NULL default '',
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favo_eten varchar(50) NOT NULL default '',
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favo_muziek varchar(30) NOT NULL default '',
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info text NOT NULL,
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ipnr varchar(30) NOT NULL default '',
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PRIMARY KEY (member_id)
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) TYPE=MyISAM PACK_KEYS=1;
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insert into t1 (member_id) values (1),(2),(3);
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select member_id, nickname, voornaam FROM t1
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ORDER by lastchange_datum DESC LIMIT 2;
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member_id nickname voornaam
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1
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2
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drop table t1;
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create table t1 (a int not null, b int, c varchar(10), key (a, b, c));
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insert into t1 values (1, NULL, NULL), (1, NULL, 'b'), (1, 1, NULL), (1, 1, 'b'), (1, 1, 'b'), (2, 1, 'a'), (2, 1, 'b'), (2, 2, 'a'), (2, 2, 'b'), (2, 3, 'c'),(1,3,'b');
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explain select * from t1 where (a = 1 and b is null and c = 'b') or (a > 2) order by a desc;
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table type possible_keys key key_len ref rows Extra
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t1 range a a 20 NULL 2 where used; Using index
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select * from t1 where (a = 1 and b is null and c = 'b') or (a > 2) order by a desc;
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a b c
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1 NULL b
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explain select * from t1 where a >= 1 and a < 3 order by a desc;
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table type possible_keys key key_len ref rows Extra
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t1 range a a 4 NULL 10 where used; Using index
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select * from t1 where a >= 1 and a < 3 order by a desc;
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a b c
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2 3 c
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2 2 b
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2 2 a
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2 1 b
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2 1 a
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1 3 b
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1 1 b
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1 1 b
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1 1 NULL
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1 NULL b
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1 NULL NULL
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explain select * from t1 where a = 1 order by a desc, b desc;
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table type possible_keys key key_len ref rows Extra
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t1 ref a a 4 const 5 where used; Using index
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select * from t1 where a = 1 order by a desc, b desc;
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a b c
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1 3 b
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1 1 b
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1 1 b
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1 1 NULL
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1 NULL b
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1 NULL NULL
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explain select * from t1 where a = 1 and b is null order by a desc, b desc;
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table type possible_keys key key_len ref rows Extra
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t1 ref a a 9 const,const 2 where used; Using index; Using filesort
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select * from t1 where a = 1 and b is null order by a desc, b desc;
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a b c
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1 NULL NULL
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1 NULL b
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explain select * from t1 where a >= 1 and a < 3 and b >0 order by a desc,b desc;
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table type possible_keys key key_len ref rows Extra
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t1 range a a 9 NULL 8 where used; Using index; Using filesort
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explain select * from t1 where a = 2 and b >0 order by a desc,b desc;
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table type possible_keys key key_len ref rows Extra
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t1 range a a 9 NULL 5 where used; Using index
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explain select * from t1 where a = 2 and b is null order by a desc,b desc;
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table type possible_keys key key_len ref rows Extra
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t1 ref a a 9 const,const 1 where used; Using index; Using filesort
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explain select * from t1 where a = 2 and (b is null or b > 0) order by a
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desc,b desc;
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table type possible_keys key key_len ref rows Extra
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t1 range a a 9 NULL 6 where used; Using index
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explain select * from t1 where a = 2 and b > 0 order by a desc,b desc;
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table type possible_keys key key_len ref rows Extra
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t1 range a a 9 NULL 5 where used; Using index
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explain select * from t1 where a = 2 and b < 2 order by a desc,b desc;
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table type possible_keys key key_len ref rows Extra
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t1 range a a 9 NULL 2 where used; Using index; Using filesort
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alter table t1 modify b int not null, modify c varchar(10) not null;
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explain select * from t1 order by a, b, c;
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table type possible_keys key key_len ref rows Extra
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t1 index NULL a 18 NULL 11 Using index
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select * from t1 order by a, b, c;
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a b c
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1 0
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1 0 b
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1 1
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1 1 b
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1 1 b
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1 3 b
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2 1 a
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2 1 b
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2 2 a
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2 2 b
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2 3 c
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explain select * from t1 order by a desc, b desc, c desc;
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table type possible_keys key key_len ref rows Extra
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t1 index NULL a 18 NULL 11 Using index
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select * from t1 order by a desc, b desc, c desc;
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a b c
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2 3 c
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2 2 b
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2 2 a
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2 1 b
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2 1 a
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1 3 b
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1 1 b
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1 1 b
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1 1
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1 0 b
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1 0
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explain select * from t1 where (a = 1 and b = 1 and c = 'b') or (a > 2) order by a desc;
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table type possible_keys key key_len ref rows Extra
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t1 range a a 18 NULL 3 where used; Using index
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select * from t1 where (a = 1 and b = 1 and c = 'b') or (a > 2) order by a desc;
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a b c
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1 1 b
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1 1 b
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explain select * from t1 where a < 2 and b <= 1 order by a desc, b desc;
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table type possible_keys key key_len ref rows Extra
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t1 range a a 4 NULL 6 where used; Using index
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select * from t1 where a < 2 and b <= 1 order by a desc, b desc;
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a b c
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1 1 b
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1 1 b
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1 1
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1 0 b
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1 0
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select count(*) from t1 where a < 5 and b > 0;
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count(*)
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9
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select * from t1 where a < 5 and b > 0 order by a desc,b desc;
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a b c
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2 3 c
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2 2 b
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2 2 a
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2 1 b
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2 1 a
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1 3 b
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1 1 b
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1 1 b
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1 1
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explain select * from t1 where a between 1 and 3 and b <= 1 order by a desc, b desc;
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table type possible_keys key key_len ref rows Extra
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t1 range a a 8 NULL 10 where used; Using index
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select * from t1 where a between 1 and 3 and b <= 1 order by a desc, b desc;
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a b c
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2 1 b
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2 1 a
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1 1 b
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1 1 b
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1 1
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1 0 b
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1 0
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explain select * from t1 where a between 0 and 1 order by a desc, b desc;
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table type possible_keys key key_len ref rows Extra
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t1 range a a 4 NULL 5 where used; Using index
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select * from t1 where a between 0 and 1 order by a desc, b desc;
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a b c
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1 3 b
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1 1 b
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1 1 b
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1 1
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1 0 b
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1 0
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drop table t1;
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CREATE TABLE t1 (
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gid int(10) unsigned NOT NULL auto_increment,
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cid smallint(5) unsigned NOT NULL default '0',
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PRIMARY KEY (gid),
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KEY component_id (cid)
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) TYPE=MyISAM;
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INSERT INTO t1 VALUES (103853,108),(103867,108),(103962,108),(104505,108),(104619,108),(104620,108);
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ALTER TABLE t1 add skr int(10) not null;
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CREATE TABLE t2 (
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gid int(10) unsigned NOT NULL default '0',
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uid smallint(5) unsigned NOT NULL default '1',
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sid tinyint(3) unsigned NOT NULL default '1',
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PRIMARY KEY (gid),
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KEY uid (uid),
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KEY status_id (sid)
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) TYPE=MyISAM;
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INSERT INTO t2 VALUES (103853,250,5),(103867,27,5),(103962,27,5),(104505,117,5),(104619,75,5),(104620,15,5);
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CREATE TABLE t3 (
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uid smallint(6) NOT NULL auto_increment,
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PRIMARY KEY (uid)
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) TYPE=MyISAM;
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INSERT INTO t3 VALUES (1),(15),(27),(75),(117),(250);
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ALTER TABLE t3 add skr int(10) not null;
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select t1.gid, t2.sid, t3.uid from t2, t1, t3 where t2.gid = t1.gid and t2.uid = t3.uid order by t3.uid, t1.gid;
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gid sid uid
|
|
104620 5 15
|
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103867 5 27
|
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103962 5 27
|
|
104619 5 75
|
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104505 5 117
|
|
103853 5 250
|
|
select t1.gid, t2.sid, t3.uid from t3, t2, t1 where t2.gid = t1.gid and t2.uid = t3.uid order by t3.uid, t1.gid;
|
|
gid sid uid
|
|
104620 5 15
|
|
103867 5 27
|
|
103962 5 27
|
|
104619 5 75
|
|
104505 5 117
|
|
103853 5 250
|
|
EXPLAIN select t1.gid, t2.sid, t3.uid from t3, t2, t1 where t2.gid = t1.gid and t2.uid = t3.uid order by t1.gid, t3.uid;
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table type possible_keys key key_len ref rows Extra
|
|
t1 index PRIMARY PRIMARY 4 NULL 6 Using index
|
|
t2 eq_ref PRIMARY,uid PRIMARY 4 t1.gid 1
|
|
t3 eq_ref PRIMARY PRIMARY 2 t2.uid 1 where used; Using index
|
|
EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.gid = t3.uid order by t1.gid,t3.skr;
|
|
table type possible_keys key key_len ref rows Extra
|
|
t1 index PRIMARY PRIMARY 4 NULL 6 Using index
|
|
t3 eq_ref PRIMARY PRIMARY 2 t1.gid 1 where used
|
|
EXPLAIN SELECT t1.gid, t2.sid, t3.uid from t2, t1, t3 where t2.gid = t1.gid and t2.uid = t3.uid order by t3.uid, t1.gid;
|
|
table type possible_keys key key_len ref rows Extra
|
|
t1 index PRIMARY PRIMARY 4 NULL 6 Using index; Using temporary; Using filesort
|
|
t2 eq_ref PRIMARY,uid PRIMARY 4 t1.gid 1
|
|
t3 eq_ref PRIMARY PRIMARY 2 t2.uid 1 where used; Using index
|
|
EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.gid = t3.uid order by t3.skr,t1.gid;
|
|
table type possible_keys key key_len ref rows Extra
|
|
t1 index PRIMARY PRIMARY 4 NULL 6 Using index; Using temporary; Using filesort
|
|
t3 eq_ref PRIMARY PRIMARY 2 t1.gid 1 where used
|
|
EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.skr = t3.uid order by t1.gid,t3.skr;
|
|
table type possible_keys key key_len ref rows Extra
|
|
t1 ALL NULL NULL NULL NULL 6 Using temporary; Using filesort
|
|
t3 eq_ref PRIMARY PRIMARY 2 t1.skr 1 where used
|
|
drop table t1,t2,t3;
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