DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (a int, b int, c int, d int, PRIMARY KEY(a,b,c))
ENGINE = NDB
PARTITION BY KEY (a,b);
insert into t1 values (1,1,1,1);
select * from t1;
a	b	c	d
1	1	1	1
update t1 set d = 2 where a = 1 and b = 1 and c = 1;
select * from t1;
a	b	c	d
1	1	1	2
delete from t1;
select * from t1;
a	b	c	d
drop table t1;
CREATE TABLE t1 (a int, b int, c int, d int, PRIMARY KEY(a,b))
ENGINE = NDB
PARTITION BY KEY (c);
ERROR HY000: A PRIMARY KEY must include all columns in the table's partitioning function
CREATE TABLE t1 (a int, b int, c int, PRIMARY KEY(a,b))
ENGINE = NDB
PARTITION BY KEY (a);
insert into t1 values 
(1,1,3),(1,2,3),(1,3,3),(1,4,3),(1,5,3),(1,6,3),
(1,7,3),(1,8,3),(1,9,3),(1,10,3),(1,11,3),(1,12,3);
select * from t1 order by b;
a	b	c
1	1	3
1	2	3
1	3	3
1	4	3
1	5	3
1	6	3
1	7	3
1	8	3
1	9	3
1	10	3
1	11	3
1	12	3
select max(b) from t1 where a = 1;
max(b)
12
select b from t1 where a = 1 order by b desc;
b
12
11
10
9
8
7
6
5
4
3
2
1
DROP TABLE t1;
CREATE TABLE t1 (a INT, b CHAR(10) COLLATE latin1_bin, c INT, d INT,
PRIMARY KEY (a,b,c) USING HASH)
ENGINE=NDB
DEFAULT CHARSET=latin1
PARTITION BY KEY (b);
insert into t1 values (1,"a",1,1),(2,"a",1,1),(3,"a",1,1);
Attributes:
a Int PRIMARY KEY AT=FIXED ST=MEMORY
b Char(10;latin1_bin) PRIMARY KEY DISTRIBUTION KEY AT=FIXED ST=MEMORY
c Int PRIMARY KEY AT=FIXED ST=MEMORY
d Int NULL AT=FIXED ST=MEMORY
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) NOT NULL DEFAULT '0',
  `b` char(10) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL DEFAULT '',
  `c` int(11) NOT NULL DEFAULT '0',
  `d` int(11) DEFAULT NULL,
  PRIMARY KEY (`a`,`b`,`c`) USING HASH
) ENGINE=ndbcluster DEFAULT CHARSET=latin1
/*!50100 PARTITION BY KEY (b) */
DROP TABLE t1;
CREATE TABLE t1 (a int not null primary key)
PARTITION BY KEY(a)
(PARTITION p0 ENGINE = NDB, PARTITION p1 ENGINE = NDB);
drop table t1;
CREATE TABLE t1 (a int not null primary key);
ALTER TABLE t1
ENGINE = NDB
PARTITION BY KEY(a)
(PARTITION p0 ENGINE = NDB, PARTITION p1 ENGINE = NDB);
drop table t1;
CREATE TABLE t1 (a int not null primary key) ENGINE = NDB;
ALTER TABLE t1
PARTITION BY KEY(a)
(PARTITION p0 ENGINE = NDB, PARTITION p1 ENGINE = NDB);
drop table t1;
create table t1 (a int primary key)
engine=ndb
partition by key(a)
(partition p0, partition p1);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=ndbcluster DEFAULT CHARSET=latin1
/*!50100 PARTITION BY KEY (a)
(PARTITION p0 ENGINE = ndbcluster,
 PARTITION p1 ENGINE = ndbcluster) */
alter table t1 engine=heap;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=MEMORY DEFAULT CHARSET=latin1
/*!50100 PARTITION BY KEY (a)
(PARTITION p0 ENGINE = MEMORY,
 PARTITION p1 ENGINE = MEMORY) */
alter table t1 engine=ndb;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=ndbcluster DEFAULT CHARSET=latin1
/*!50100 PARTITION BY KEY (a)
(PARTITION p0 ENGINE = ndbcluster,
 PARTITION p1 ENGINE = ndbcluster) */
alter table t1 engine=heap remove partitioning;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=MEMORY DEFAULT CHARSET=latin1
alter table t1 engine=ndb
partition by key(a)
(partition p0, partition p1 engine = ndb);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=ndbcluster DEFAULT CHARSET=latin1
/*!50100 PARTITION BY KEY (a)
(PARTITION p0 ENGINE = ndbcluster,
 PARTITION p1 ENGINE = ndbcluster) */
alter table t1
partition by key (a)
(partition p0 engine=ndb, partition p1 engine=ndb);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=ndbcluster DEFAULT CHARSET=latin1
/*!50100 PARTITION BY KEY (a)
(PARTITION p0 ENGINE = ndbcluster,
 PARTITION p1 ENGINE = ndbcluster) */
alter table t1 remove partitioning;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=ndbcluster DEFAULT CHARSET=latin1
alter table t1
partition by key(a)
(partition p0 engine=ndb, partition p1);
alter table t1
engine=ndb
partition by key(a)
(partition p0 engine=ndb, partition p1 engine = ndb);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=ndbcluster DEFAULT CHARSET=latin1
/*!50100 PARTITION BY KEY (a)
(PARTITION p0 ENGINE = ndbcluster,
 PARTITION p1 ENGINE = ndbcluster) */
drop table t1;
CREATE TABLE t1 (
c1 MEDIUMINT NOT NULL AUTO_INCREMENT,
c2 TEXT NOT NULL,
c3 INT NOT NULL,
c4 BIT NOT NULL,
c5 FLOAT,
c6 VARCHAR(255),
c7 TIMESTAMP,
PRIMARY KEY(c1,c3))
ENGINE=NDB
PARTITION BY KEY(c3) PARTITIONS 5;
ALTER TABLE t1 COALESCE PARTITION 4;
DROP TABLE t1;
CREATE TABLE t1 (a int primary key)
ENGINE=NDB
PARTITION BY KEY(a);
ANALYZE TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	analyze	status	OK
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	note	The storage engine for the table doesn't support check
OPTIMIZE TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	optimize	status	OK
REPAIR TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	repair	note	The storage engine for the table doesn't support repair
ALTER TABLE t1 OPTIMIZE PARTITION p0;
Table	Op	Msg_type	Msg_text
test.t1	optimize	status	OK
ALTER TABLE t1 CHECK PARTITION p0;
Table	Op	Msg_type	Msg_text
test.t1	check	note	The storage engine for the table doesn't support check
ALTER TABLE t1 REPAIR PARTITION p0;
Table	Op	Msg_type	Msg_text
test.t1	repair	note	The storage engine for the table doesn't support repair
ALTER TABLE t1 ANALYZE PARTITION p0;
Table	Op	Msg_type	Msg_text
test.t1	analyze	status	OK
ALTER TABLE t1 REBUILD PARTITION p0;
ERROR HY000: Table storage engine for 't1' doesn't have this option
DROP TABLE t1;
CREATE TABLE t1 (
c1 MEDIUMINT NOT NULL AUTO_INCREMENT,
c2 TEXT NOT NULL,
c3 INT NOT NULL,
PRIMARY KEY(c1,c3))
ENGINE=NDB
PARTITION BY KEY(c3) PARTITIONS 5;
ALTER TABLE t1 ADD COLUMN c4 INT AFTER c1;
DROP TABLE t1;
CREATE TABLE t1 (
c1 MEDIUMINT NOT NULL AUTO_INCREMENT,
c2 TEXT NOT NULL,
c3 INT NOT NULL,
PRIMARY KEY(c1,c3))
ENGINE=NDB
PARTITION BY KEY(c3)
(PARTITION p0 NODEGROUP 0, PARTITION p1 NODEGROUP 0);
ALTER TABLE t1 ADD COLUMN c4 INT AFTER c1;
SELECT NODEGROUP,PARTITION_NAME FROM information_schema.partitions WHERE
table_name = "t1";
NODEGROUP	PARTITION_NAME
0	p0
0	p1
DROP TABLE t1;
CREATE TABLE t1 (
a tinyint unsigned NOT NULL,
b bigint(20) unsigned NOT NULL,
c char(12),
PRIMARY KEY (a,b)
) ENGINE ndb DEFAULT CHARSET=latin1 PARTITION BY KEY (a);
insert into t1 values(1,1,'1'), (2,2,'2'), (3,3,'3'), (4,4,'4'), (5,5,'5');
select * from t1 where a = 1;
a	b	c
1	1	1
select * from t1 where a = 2;
a	b	c
2	2	2
select * from t1 where a = 3;
a	b	c
3	3	3
select * from t1 where a = 4;
a	b	c
4	4	4
select * from t1 where a = 5;
a	b	c
5	5	5
delete from t1 where a = 1;
select * from t1 order by 1;
a	b	c
2	2	2
3	3	3
4	4	4
5	5	5
delete from t1 where a = 2;
select * from t1 order by 1;
a	b	c
3	3	3
4	4	4
5	5	5
delete from t1 where a = 3;
select * from t1 order by 1;
a	b	c
4	4	4
5	5	5
delete from t1 where a = 4;
select * from t1 order by 1;
a	b	c
5	5	5
delete from t1 where a = 5;
select * from t1 order by 1;
a	b	c
drop table t1;
create table nott1 (a int, 
b int, 
c int, 
primary key(a,b)) 
engine=ndb partition by key(a);
insert into nott1 values (0,0,0);
insert into nott1 values (0,1,1);
insert into nott1 values (0,2,2);
insert into nott1 values (0,3,3);
insert into nott1 values (1,0,4);
insert into nott1 values (1,1,5);
insert into nott1 values (1,2,6);
insert into nott1 values (2,22,7);
All partitions scan
select * from nott1 order by c;
a	b	c
0	0	0
0	1	1
0	2	2
0	3	3
1	0	4
1	1	5
1	2	6
2	22	7
ndb_scan_count
1
ndb_pruned_scan_count
0
Single partition scan
select * from nott1 where a=0 order by c;
a	b	c
0	0	0
0	1	1
0	2	2
0	3	3
ndb_scan_count
1
ndb_pruned_scan_count
1
Single partition scan
select * from nott1 where a=4 order by c;
a	b	c
ndb_scan_count
1
ndb_pruned_scan_count
1
MRR scan on one partition
select * from nott1 where a=0 and (( b > 0 and b < 3) or 
( b > 5 and b < 10) or 
( b > 22 and b < 50)) order by c;
a	b	c
0	1	1
0	2	2
ndb_scan_count
1
ndb_pruned_scan_count
1
drop table nott1;