mariadb/mysql-test/innodb-index.test

-- source include/have_innodb.inc

create table t1(a int not null, b int, c char(10) not null, d varchar(20)) engine = innodb;
insert into t1 values (5,5,'oo','oo'),(4,4,'tr','tr'),(3,4,'ad','ad'),(2,3,'ak','ak');
commit;
--error ER_DUP_KEYNAME
alter table t1 add index b (b), add index b (b);
--error ER_DUP_FIELDNAME
alter table t1 add index (b,b);
alter table t1 add index d2 (d);
show create table t1;
explain select * from t1 force index(d2) order by d;
select * from t1 force index (d2) order by d;
--error ER_DUP_ENTRY
alter table t1 add unique index (b);
show create table t1;
alter table t1 add index (b);
show create table t1;

# Check how existing tables interfere with temporary tables.
CREATE TABLE `t1#1`(a INT PRIMARY KEY) ENGINE=InnoDB;

--error 156
alter table t1 add unique index (c), add index (d);
rename table `t1#1` to `t1#2`;
--error 156
alter table t1 add unique index (c), add index (d);
drop table `t1#2`;

alter table t1 add unique index (c), add index (d);
show create table t1;
explain select * from t1 force index(c) order by c;
--error ER_REQUIRES_PRIMARY_KEY
drop index c on t1;
alter table t1 add primary key (a), drop index c;
show create table t1;
--error ER_MULTIPLE_PRI_KEY
alter table t1 add primary key (c);
--error ER_DUP_ENTRY
alter table t1 drop primary key, add primary key (b);
create unique index c on t1 (c);
show create table t1;
explain select * from t1 force index(c) order by c;
select * from t1 force index(c) order by c;
alter table t1 drop index b, add index (b);
show create table t1;
insert into t1 values(6,1,'ggg','ggg');
select * from t1;
select * from t1 force index(b) order by b;
select * from t1 force index(c) order by c;
select * from t1 force index(d) order by d;
explain select * from t1 force index(b) order by b;
explain select * from t1 force index(c) order by c;
explain select * from t1 force index(d) order by d;
show create table t1;
drop table t1;

create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb;
insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,3,'ad','ad'),(4,4,'afe','afe');
commit;
alter table t1 add index (c(2));
show create table t1;
alter table t1 add unique index (d(10));
show create table t1;
insert into t1 values(5,1,'ggg','ggg');
select * from t1;
select * from t1 force index(c) order by c;
select * from t1 force index(d) order by d;
explain select * from t1 order by b;
explain select * from t1 force index(c) order by c;
explain select * from t1 force index(d) order by d;
show create table t1;
alter table t1 drop index d;
insert into t1 values(8,9,'fff','fff');
select * from t1;
select * from t1 force index(c) order by c;
explain select * from t1 order by b;
explain select * from t1 force index(c) order by c;
explain select * from t1 order by d;
show create table t1;
drop table t1;

create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb;
insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,2,'ad','ad'),(4,4,'afe','afe');
commit;
alter table t1 add unique index (b,c);
insert into t1 values(8,9,'fff','fff');
select * from t1;
select * from t1 force index(b) order by b;
explain select * from t1 force index(b) order by b;
show create table t1;
alter table t1 add index (b,c);
insert into t1 values(11,11,'kkk','kkk');
select * from t1;
select * from t1 force index(b) order by b;
explain select * from t1 force index(b) order by b;
show create table t1;
alter table t1 add unique index (c,d);
insert into t1 values(13,13,'yyy','aaa');
select * from t1;
select * from t1 force index(b) order by b;
select * from t1 force index(c) order by c;
explain select * from t1 force index(b) order by b;
explain select * from t1 force index(c) order by c;
show create table t1;
drop table t1;

create table t1(a int not null, b int not null, c int, primary key (a), key (b)) engine = innodb;
create table t3(a int not null, c int not null, d int, primary key (a), key (c)) engine = innodb;
create table t4(a int not null, d int not null, e int, primary key (a), key (d)) engine = innodb;
create table t2(a int not null, b int not null, c int not null, d int not null, e int,
foreign key (b) references t1(b) on delete cascade,
foreign key (c) references t3(c), foreign key (d) references t4(d))
engine = innodb;
--error ER_DROP_INDEX_FK
alter table t1 drop index b;
--error ER_DROP_INDEX_FK
alter table t3 drop index c;
--error ER_DROP_INDEX_FK
alter table t4 drop index d;
--error ER_DROP_INDEX_FK
alter table t2 drop index b;
--error ER_DROP_INDEX_FK
alter table t2 drop index b, drop index c, drop index d;
# Apparently, the following makes mysql_alter_table() drop index d.
create unique index dc on t2 (d,c);
create index dc on t1 (b,c);
# This should preserve the foreign key constraints.
alter table t2 add primary key (a);
insert into t1 values (1,1,1);
insert into t3 values (1,1,1);
insert into t4 values (1,1,1);
insert into t2 values (1,1,1,1,1);
commit;
alter table t4 add constraint dc foreign key (a) references t1(a);
show create table t4;
--replace_regex /'test\.#sql-[0-9a-f_]*'/'#sql-temporary'/
# a foreign key 'test/dc' already exists
--error ER_CANT_CREATE_TABLE
alter table t3 add constraint dc foreign key (a) references t1(a);
show create table t3;
alter table t2 drop index b, add index (b);
show create table t2;
--error ER_ROW_IS_REFERENCED_2
delete from t1;
--error ER_CANT_DROP_FIELD_OR_KEY
drop index dc on t4;
# there is no foreign key dc on t3
--replace_regex /'\.\/test\/#sql2-[0-9a-f-]*'/'#sql2-temporary'/
--error ER_ERROR_ON_RENAME
alter table t3 drop foreign key dc;
alter table t4 drop foreign key dc;
select * from t2;
delete from t1;
select * from t2;

drop table t2,t4,t3,t1;

-- let charset = utf8
-- source include/innodb-index.inc

create table t1(a int not null, b int) engine = innodb;
insert into t1 values (1,1),(1,1),(1,1),(1,1);
--error ER_DUP_ENTRY
alter table t1 add unique index (a);
--error ER_DUP_ENTRY
alter table t1 add unique index (b);
--error ER_DUP_ENTRY
alter table t1 add unique index (a), add unique index(b);
show create table t1;
drop table t1;

create table t1(a int not null, c int not null,b int, primary key(a), unique key(c), key(b)) engine = innodb;
alter table t1 drop index c, drop index b;
show create table t1;
drop table t1;

create table t1(a int not null, b int, primary key(a)) engine = innodb;
alter table t1 add index (b);
show create table t1;
drop table t1;

create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb;
insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,3,'ac','ac'),(4,4,'afe','afe'),(5,4,'affe','affe');
--error ER_DUP_ENTRY
alter table t1 add unique index (b), add unique index (c), add unique index (d);
--error ER_DUP_ENTRY
alter table t1 add unique index (c), add unique index (b), add index (d);
show create table t1;
drop table t1;

create table t1(a int not null, b int not null, c int, primary key (a), key(c)) engine=innodb;
insert into t1 values (5,1,5),(4,2,4),(3,3,3),(2,4,2),(1,5,1);
alter table t1 add unique index (b);
insert into t1 values (10,20,20),(11,19,19),(12,18,18),(13,17,17);
show create table t1;
check table t1;
explain select * from t1 force index(c) order by c;
explain select * from t1 order by a;
explain select * from t1 force index(b) order by b;
select * from t1 order by a;
select * from t1 force index(b) order by b;
select * from t1 force index(c) order by c;
drop table t1;

create table t1(a int not null, b int not null) engine=innodb;
insert into t1 values (1,1);
alter table t1 add primary key(b);
insert into t1 values (2,2);
show create table t1;
check table t1;
select * from t1;
explain select * from t1;
explain select * from t1 order by a;
explain select * from t1 order by b;
checksum table t1;
drop table t1;

create table t1(a int not null) engine=innodb;
insert into t1 values (1);
alter table t1 add primary key(a);
insert into t1 values (2);
show create table t1;
check table t1;
commit;
select * from t1;
explain select * from t1;
explain select * from t1 order by a;
drop table t1;

create table t2(d varchar(17) primary key) engine=innodb default charset=utf8;
create table t3(a int primary key) engine=innodb;

insert into t3 values(22),(44),(33),(55),(66);

insert into t2 values ('jejdkrun87'),('adfd72nh9k'),
('adfdpplkeock'),('adfdijnmnb78k'),('adfdijn0loKNHJik');

create table t1(a int, b blob, c text, d text not null)
engine=innodb default charset = utf8;

insert into t1 values (null,null,null,'null');
insert into t1
select a,left(repeat(d,100*a),65535),repeat(d,20*a),d from t2,t3;
drop table t2, t3;
select count(*) from t1 where a=44;
select a,
length(b),b=left(repeat(d,100*a),65535),length(c),c=repeat(d,20*a),d from t1;
--error ER_PRIMARY_CANT_HAVE_NULL
alter table t1 add primary key (a), add key (b(20));
delete from t1 where d='null';
--error ER_DUP_ENTRY
alter table t1 add primary key (a), add key (b(20));
delete from t1 where a%2;
check table t1;
alter table t1 add primary key (a,b(255),c(255)), add key (b(767));
select count(*) from t1 where a=44;
select a,
length(b),b=left(repeat(d,100*a),65535),length(c),c=repeat(d,20*a),d from t1;
show create table t1;
check table t1;
explain select * from t1 where b like 'adfd%';

#
# Test locking
#

create table t2(a int, b varchar(255), primary key(a,b)) engine=innodb;
insert into t2 select a,left(b,255) from t1;
drop table t1;
rename table t2 to t1;

connect (a,localhost,root,,);
connect (b,localhost,root,,);
connection a;
begin;
# Obtain an IX lock on the table
select a from t1 limit 1 for update;
connection b;
# This would require an S lock on the table, conflicting with the IX lock.
--error ER_LOCK_WAIT_TIMEOUT
create index t1ba on t1 (b,a);
connection a;
commit;
begin;
# Obtain an IS lock on the table
select a from t1 limit 1 lock in share mode;
connection b;
# This will require an S lock on the table.  No conflict with the IS lock.
create index t1ba on t1 (b,a);
# This would require an X lock on the table, conflicting with the IS lock.
--error ER_LOCK_WAIT_TIMEOUT
drop index t1ba on t1;
connection a;
commit;
explain select a from t1 order by b;
--send
select a,sleep(2+a/100) from t1 order by b limit 3;

# The following DROP INDEX will succeed, altough the SELECT above has
# opened a read view.  However, during the execution of the SELECT,
# MySQL should hold a table lock that should block the execution
# of the DROP INDEX below.

connection b;
select sleep(1);
drop index t1ba on t1;

# After the index was dropped, subsequent SELECTs will use the same
# read view, but they should not be accessing the dropped index any more.

connection a;
reap;
explain select a from t1 order by b;
select a from t1 order by b limit 3;
commit;

connection default;
disconnect a;
disconnect b;

drop table t1;

# Test creating a table that could lead to undo log overflow.
# In the undo log, we write a 768-byte prefix (REC_MAX_INDEX_COL_LEN)
# of each externally stored column that appears as a column prefix in an index.
# For this test case, it would suffice to write 1 byte, though.
create table t1(a blob,b blob,c blob,d blob,e blob,f blob,g blob,h blob,
		i blob,j blob,k blob,l blob,m blob,n blob,o blob,p blob,
		q blob,r blob,s blob,t blob,u blob)
	engine=innodb;
create index t1a on t1 (a(1));
create index t1b on t1 (b(1));
create index t1c on t1 (c(1));
create index t1d on t1 (d(1));
create index t1e on t1 (e(1));
create index t1f on t1 (f(1));
create index t1g on t1 (g(1));
create index t1h on t1 (h(1));
create index t1i on t1 (i(1));
create index t1j on t1 (j(1));
create index t1k on t1 (k(1));
create index t1l on t1 (l(1));
create index t1m on t1 (m(1));
create index t1n on t1 (n(1));
create index t1o on t1 (o(1));
create index t1p on t1 (p(1));
create index t1q on t1 (q(1));
create index t1r on t1 (r(1));
create index t1s on t1 (s(1));
create index t1t on t1 (t(1));
--error 139
create index t1u on t1 (u(1));
--error 139
create index t1ut on t1 (u(1), t(1));
create index t1st on t1 (s(1), t(1));
show create table t1;
drop table t1;