mariadb/mysql-test/suite/parts/r/partition_char_myisam.result

---- Partitioning and char data type
create table t1 (a char(255) not null, primary key(a)) engine='MyISAM' 
partition by key (a) (
partition pa1 max_rows=20 min_rows=2,
partition pa2 max_rows=30 min_rows=3,
partition pa3 max_rows=30 min_rows=4,
partition pa4 max_rows=40 min_rows=2);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` char(255) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY KEY (a) (PARTITION pa1 MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = MyISAM, PARTITION pa2 MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = MyISAM, PARTITION pa3 MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = MyISAM, PARTITION pa4 MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = MyISAM) */
insert into t1 values (repeat('a',255)), ('b'), (repeat('a',128)), (repeat('b',64));
select * from t1;
a
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
b
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
select * from t1 where a='b';
a
b
update t1 set a='bb' where a='b';
delete from t1 where a='bb';
select * from t1;
a
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
drop table t1;
create table t2 (a char(255) not null, primary key(a)) engine='MyISAM' 
partition by key (a) partitions 27;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` char(255) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY KEY (a) PARTITIONS 27  */
26 inserts;
insert into t2 values (repeat(char(ascii('a')+0),26+54));
insert into t2 values (repeat(char(ascii('a')+1),25+54));
insert into t2 values (repeat(char(ascii('a')+2),24+54));
insert into t2 values (repeat(char(ascii('a')+3),23+54));
insert into t2 values (repeat(char(ascii('a')+4),22+54));
insert into t2 values (repeat(char(ascii('a')+5),21+54));
insert into t2 values (repeat(char(ascii('a')+6),20+54));
insert into t2 values (repeat(char(ascii('a')+7),19+54));
insert into t2 values (repeat(char(ascii('a')+8),18+54));
insert into t2 values (repeat(char(ascii('a')+9),17+54));
insert into t2 values (repeat(char(ascii('a')+10),16+54));
insert into t2 values (repeat(char(ascii('a')+11),15+54));
insert into t2 values (repeat(char(ascii('a')+12),14+54));
insert into t2 values (repeat(char(ascii('a')+13),13+54));
insert into t2 values (repeat(char(ascii('a')+14),12+54));
insert into t2 values (repeat(char(ascii('a')+15),11+54));
insert into t2 values (repeat(char(ascii('a')+16),10+54));
insert into t2 values (repeat(char(ascii('a')+17),9+54));
insert into t2 values (repeat(char(ascii('a')+18),8+54));
insert into t2 values (repeat(char(ascii('a')+19),7+54));
insert into t2 values (repeat(char(ascii('a')+20),6+54));
insert into t2 values (repeat(char(ascii('a')+21),5+54));
insert into t2 values (repeat(char(ascii('a')+22),4+54));
insert into t2 values (repeat(char(ascii('a')+23),3+54));
insert into t2 values (repeat(char(ascii('a')+24),2+54));
insert into t2 values (repeat(char(ascii('a')+25),1+54));
select count(*) from t2;
count(*)
26
select * from t2;
a
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd
eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg
hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj
kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk
lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll
mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
ppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
ttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt
uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
drop table t2;
---- Partitioning and binary data type
create table t1 (a binary(255) not null, primary key(a)) engine='MyISAM' 
partition by key (a) (
partition pa1 max_rows=20 min_rows=2,
partition pa2 max_rows=30 min_rows=3,
partition pa3 max_rows=30 min_rows=4,
partition pa4 max_rows=40 min_rows=2);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` binary(255) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY KEY (a) (PARTITION pa1 MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = MyISAM, PARTITION pa2 MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = MyISAM, PARTITION pa3 MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = MyISAM, PARTITION pa4 MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = MyISAM) */
insert into t1 values (repeat('a',255)), ('b'), (repeat('a',128)), (repeat('b',64));
select hex(a) from t1;
hex(a)
616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161
620000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262620000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
select a from t1 where substr(a,1,2)='b\0';
a
b
update t1 set a='cc' where substr(a,1,2)= 'b\0';
select a from t1 where substr(a,1,1)='c';
a
cc
delete from t1 where substr(a,1,2)='cc';
select hex(a) from t1;
hex(a)
616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161
626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262620000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
drop table t1;
create table t2 (a binary(255) not null, primary key(a)) engine='MyISAM' 
partition by key (a) partitions 27;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` binary(255) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY KEY (a) PARTITIONS 27  */
26 inserts;
insert into t2 values (repeat(char(ascii('a')+0),26+54));
insert into t2 values (repeat(char(ascii('a')+1),25+54));
insert into t2 values (repeat(char(ascii('a')+2),24+54));
insert into t2 values (repeat(char(ascii('a')+3),23+54));
insert into t2 values (repeat(char(ascii('a')+4),22+54));
insert into t2 values (repeat(char(ascii('a')+5),21+54));
insert into t2 values (repeat(char(ascii('a')+6),20+54));
insert into t2 values (repeat(char(ascii('a')+7),19+54));
insert into t2 values (repeat(char(ascii('a')+8),18+54));
insert into t2 values (repeat(char(ascii('a')+9),17+54));
insert into t2 values (repeat(char(ascii('a')+10),16+54));
insert into t2 values (repeat(char(ascii('a')+11),15+54));
insert into t2 values (repeat(char(ascii('a')+12),14+54));
insert into t2 values (repeat(char(ascii('a')+13),13+54));
insert into t2 values (repeat(char(ascii('a')+14),12+54));
insert into t2 values (repeat(char(ascii('a')+15),11+54));
insert into t2 values (repeat(char(ascii('a')+16),10+54));
insert into t2 values (repeat(char(ascii('a')+17),9+54));
insert into t2 values (repeat(char(ascii('a')+18),8+54));
insert into t2 values (repeat(char(ascii('a')+19),7+54));
insert into t2 values (repeat(char(ascii('a')+20),6+54));
insert into t2 values (repeat(char(ascii('a')+21),5+54));
insert into t2 values (repeat(char(ascii('a')+22),4+54));
insert into t2 values (repeat(char(ascii('a')+23),3+54));
insert into t2 values (repeat(char(ascii('a')+24),2+54));
insert into t2 values (repeat(char(ascii('a')+25),1+54));
select count(*) from t2;
count(*)
26
select hex(a) from t2;
hex(a)
616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262626262620000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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696969696969696969696969696969696969696969696969696969696969696969696969696969696969696969696969696969696969696969696969696969696969696969696969000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A6A00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E6E0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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767676767676767676767676767676767676767676767676767676767676767676767676767676767676767676767676767676767676767676767600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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drop table t2;
---- Partitioning and varchar data type
create table t1 (a varchar(767) not null, primary key(a)) engine='MyISAM' 
partition by key (a) (
partition pa1 max_rows=20 min_rows=2,
partition pa2 max_rows=30 min_rows=3,
partition pa3 max_rows=30 min_rows=4,
partition pa4 max_rows=40 min_rows=2);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` varchar(767) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY KEY (a) (PARTITION pa1 MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = MyISAM, PARTITION pa2 MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = MyISAM, PARTITION pa3 MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = MyISAM, PARTITION pa4 MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = MyISAM) */
insert into t1 values (repeat('a',767)), ('b'), (repeat('a',500)), (repeat('b',64));
select * from t1;
a
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
b
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
select * from t1 where a='b';
a
b
update t1 set a='bb' where a='b';
delete from t1 where a='bb';
select * from t1;
a
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
drop table t1;
create table t2 (a varchar(767) not null, primary key(a)) engine='MyISAM' 
partition by key (a) partitions 27;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` varchar(767) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY KEY (a) PARTITIONS 27  */
26 inserts;
insert into t2 values (repeat(char(ascii('a')+0),26*26));
insert into t2 values (repeat(char(ascii('a')+1),25*25));
insert into t2 values (repeat(char(ascii('a')+2),24*24));
insert into t2 values (repeat(char(ascii('a')+3),23*23));
insert into t2 values (repeat(char(ascii('a')+4),22*22));
insert into t2 values (repeat(char(ascii('a')+5),21*21));
insert into t2 values (repeat(char(ascii('a')+6),20*20));
insert into t2 values (repeat(char(ascii('a')+7),19*19));
insert into t2 values (repeat(char(ascii('a')+8),18*18));
insert into t2 values (repeat(char(ascii('a')+9),17*17));
insert into t2 values (repeat(char(ascii('a')+10),16*16));
insert into t2 values (repeat(char(ascii('a')+11),15*15));
insert into t2 values (repeat(char(ascii('a')+12),14*14));
insert into t2 values (repeat(char(ascii('a')+13),13*13));
insert into t2 values (repeat(char(ascii('a')+14),12*12));
insert into t2 values (repeat(char(ascii('a')+15),11*11));
insert into t2 values (repeat(char(ascii('a')+16),10*10));
insert into t2 values (repeat(char(ascii('a')+17),9*9));
insert into t2 values (repeat(char(ascii('a')+18),8*8));
insert into t2 values (repeat(char(ascii('a')+19),7*7));
insert into t2 values (repeat(char(ascii('a')+20),6*6));
insert into t2 values (repeat(char(ascii('a')+21),5*5));
insert into t2 values (repeat(char(ascii('a')+22),4*4));
insert into t2 values (repeat(char(ascii('a')+23),3*3));
insert into t2 values (repeat(char(ascii('a')+24),2*2));
insert into t2 values (repeat(char(ascii('a')+25),1*1));
select count(*) from t2;
count(*)
26
select * from t2;
a
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd
eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg
hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj
kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk
lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll
mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
ppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
ttttttttttttttttttttttttttttttttttttttttttttttttt
uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
vvvvvvvvvvvvvvvvvvvvvvvvv
wwwwwwwwwwwwwwww
xxxxxxxxx
yyyy
z
drop table t2;
---- Partitioning and varbinary data type
create table t1 (a varbinary(767) not null, primary key(a)) engine='MyISAM' 
partition by key (a) (
partition pa1 max_rows=20 min_rows=2,
partition pa2 max_rows=30 min_rows=3,
partition pa3 max_rows=30 min_rows=4,
partition pa4 max_rows=40 min_rows=2);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` varbinary(767) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY KEY (a) (PARTITION pa1 MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = MyISAM, PARTITION pa2 MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = MyISAM, PARTITION pa3 MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = MyISAM, PARTITION pa4 MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = MyISAM) */
insert into t1 values (repeat('a',767)), ('b'), (repeat('a',500)), (repeat('b',64));
select * from t1;
a
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
b
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
select * from t1 where a='b';
a
b
update t1 set a='bb' where a='b';
delete from t1 where a='bb';
select * from t1;
a
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
drop table t1;
create table t2 (a varbinary(767) not null, primary key(a)) engine='MyISAM' 
partition by key (a) partitions 30;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` varbinary(767) NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY KEY (a) PARTITIONS 30  */
26 inserts;
insert into t2 values (repeat(char(ascii('a')+0),26*26));
insert into t2 values (repeat(char(ascii('a')+1),25*25));
insert into t2 values (repeat(char(ascii('a')+2),24*24));
insert into t2 values (repeat(char(ascii('a')+3),23*23));
insert into t2 values (repeat(char(ascii('a')+4),22*22));
insert into t2 values (repeat(char(ascii('a')+5),21*21));
insert into t2 values (repeat(char(ascii('a')+6),20*20));
insert into t2 values (repeat(char(ascii('a')+7),19*19));
insert into t2 values (repeat(char(ascii('a')+8),18*18));
insert into t2 values (repeat(char(ascii('a')+9),17*17));
insert into t2 values (repeat(char(ascii('a')+10),16*16));
insert into t2 values (repeat(char(ascii('a')+11),15*15));
insert into t2 values (repeat(char(ascii('a')+12),14*14));
insert into t2 values (repeat(char(ascii('a')+13),13*13));
insert into t2 values (repeat(char(ascii('a')+14),12*12));
insert into t2 values (repeat(char(ascii('a')+15),11*11));
insert into t2 values (repeat(char(ascii('a')+16),10*10));
insert into t2 values (repeat(char(ascii('a')+17),9*9));
insert into t2 values (repeat(char(ascii('a')+18),8*8));
insert into t2 values (repeat(char(ascii('a')+19),7*7));
insert into t2 values (repeat(char(ascii('a')+20),6*6));
insert into t2 values (repeat(char(ascii('a')+21),5*5));
insert into t2 values (repeat(char(ascii('a')+22),4*4));
insert into t2 values (repeat(char(ascii('a')+23),3*3));
insert into t2 values (repeat(char(ascii('a')+24),2*2));
insert into t2 values (repeat(char(ascii('a')+25),1*1));
select count(*) from t2;
count(*)
26
select * from t2;
a
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd
eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg
hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj
kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk
lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll
mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
ppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
ttttttttttttttttttttttttttttttttttttttttttttttttt
uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
vvvvvvvvvvvvvvvvvvvvvvvvv
wwwwwwwwwwwwwwww
xxxxxxxxx
yyyy
z
drop table t2;
---- Partitioning and enum data type
create table t1 (a enum('A','B','C','D','E','F','G','H','I','J','K','L') not null, primary key(a)) engine='MyISAM' 
partition by key (a) (
partition pa1 max_rows=20 min_rows=2,
partition pa2 max_rows=30 min_rows=3,
partition pa3 max_rows=30 min_rows=4,
partition pa4 max_rows=40 min_rows=2);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` enum('A','B','C','D','E','F','G','H','I','J','K','L') NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY KEY (a) (PARTITION pa1 MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = MyISAM, PARTITION pa2 MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = MyISAM, PARTITION pa3 MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = MyISAM, PARTITION pa4 MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = MyISAM) */
insert into t1 values ('A'),('D'),('L'),('G');
select * from t1;
a
A
D
G
L
select * from t1 where a='A';
a
A
update t1 set a='E' where a='L';
select * from t1;
a
A
D
E
G
delete from t1 where a='E';
select * from t1;
a
A
D
G
drop table t1;
create table t2 (a enum (
'1','2','3','4','5','6','7','8','9','0',
'A','B','C','D','E','F','G','H','I','J','K','L',
'M','N','O','P','Q','R','S','T','U','V','W','X',
'Y','Z'
) not null, primary key(a)) engine='MyISAM' 
partition by key (a) partitions 27;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` enum('1','2','3','4','5','6','7','8','9','0','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z') NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY KEY (a) PARTITIONS 27  */
0 inserts;
insert into t2 values (char(ascii('A')+26));
Warnings:
Warning	1265	Data truncated for column 'a' at row 1
insert into t2 values (char(ascii('A')+25));
insert into t2 values (char(ascii('A')+24));
insert into t2 values (char(ascii('A')+23));
insert into t2 values (char(ascii('A')+22));
insert into t2 values (char(ascii('A')+21));
insert into t2 values (char(ascii('A')+20));
insert into t2 values (char(ascii('A')+19));
insert into t2 values (char(ascii('A')+18));
insert into t2 values (char(ascii('A')+17));
insert into t2 values (char(ascii('A')+16));
insert into t2 values (char(ascii('A')+15));
insert into t2 values (char(ascii('A')+14));
insert into t2 values (char(ascii('A')+13));
insert into t2 values (char(ascii('A')+12));
insert into t2 values (char(ascii('A')+11));
insert into t2 values (char(ascii('A')+10));
insert into t2 values (char(ascii('A')+9));
insert into t2 values (char(ascii('A')+8));
insert into t2 values (char(ascii('A')+7));
insert into t2 values (char(ascii('A')+6));
insert into t2 values (char(ascii('A')+5));
insert into t2 values (char(ascii('A')+4));
insert into t2 values (char(ascii('A')+3));
insert into t2 values (char(ascii('A')+2));
insert into t2 values (char(ascii('A')+1));
insert into t2 values ('1'),('2'),('3'),('4'),('5'),('6'),('7'),('8'),('9'),('0');
select count(*) from t2;
count(*)
36
select * from t2;
a

1
2
3
4
5
6
7
8
9
0
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
drop table t2;
---- Partitioning and set data type
create table t1 (a set('A','B','C','D','E','F','G','H','I','J','K','L') not null, primary key(a)) engine='MyISAM' 
partition by key (a) (
partition pa1 max_rows=20 min_rows=2,
partition pa2 max_rows=30 min_rows=3,
partition pa3 max_rows=30 min_rows=4,
partition pa4 max_rows=40 min_rows=2);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` set('A','B','C','D','E','F','G','H','I','J','K','L') NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY KEY (a) (PARTITION pa1 MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = MyISAM, PARTITION pa2 MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = MyISAM, PARTITION pa3 MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = MyISAM, PARTITION pa4 MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = MyISAM) */
insert into t1 values ('A,B'),('C,D'),('E,L'),('G,H,K');
select * from t1 order by a;
a
A,B
C,D
G,H,K
E,L
select * from t1 where a='A,B';
a
A,B
update t1 set a='A,B,C' where a='E,L';
select * from t1 order by a;
a
A,B
A,B,C
C,D
G,H,K
delete from t1 where a='A,B';
select * from t1 order by a;
a
A,B,C
C,D
G,H,K
drop table t1;
create table t2 (a set (
'1','2','3','4','5','6','7','8','9','0',
'A','B','C','D','E','F','G','H','I','J','K','L',
'M','N','O','P','Q','R','S','T','U','V','W','X',
'Y','Z'
) not null, primary key(a)) engine='MyISAM' 
partition by key (a) partitions 27;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` set('1','2','3','4','5','6','7','8','9','0','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z') NOT NULL,
  PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY KEY (a) PARTITIONS 27  */
insert into t2 values ('A'),('B'),('C'),('D'),('E'),('F'),('G'),('H'),('I'),('K'),('L'),('M'),('N'),('O'),('P'),('Q'),('S'),('T'),('U'),('V'),('X'),('Y'),('Z');
insert into t2 values ('A,B'),('B,C'),('C,D'),('D,E'),('E,F'),('F,G'),('G,H'),('H,I'),('I,J'),('K,L'),('L,M'),('M,N'),('N,O'),('O,P'),('P,Q'),('Q,R'),('S,T'),('T,U'),('U,V'),('V,W'),('X,Y'),('Y,Z'),('Z,A');
insert into t2 values ('A,B,C'),('B,C,D'),('C,D,E'),('D,E,F'),('E,F,G'),('F,G,H'),('G,H,I'),('H,I,J'),('I,J,K'),('K,L,M'),('L,M,N'),('M,N,O'),('N,O,P'),('O,P,Q'),('P,Q,R'),('Q,R,S'),('S,T,U'),('T,U,V'),('U,V,W'),('V,W,X'),('X,Y,Z'),('Y,Z,A'),('Z,A,B');
insert into t2 values ('1'),('2'),('3'),('4'),('5'),('6'),('7'),('8'),('9'),('0');
insert into t2 values ('1,2'),('2,3'),('3,4'),('4,5'),('5,6'),('6,7'),('7,8'),('8,9'),('9,0'),('0,1');
insert into t2 values ('1,2,3'),('2,3,4'),('3,4,5'),('4,5,6'),('5,6,7'),('6,7,8'),('7,8,9'),('8,9,0'),('9,0,1'),('0,1,2');
select count(*) from t2;
count(*)
99
select * from t2 order by a;
a
1
2
1,2
3
2,3
1,2,3
4
3,4
2,3,4
5
4,5
3,4,5
6
5,6
4,5,6
7
6,7
5,6,7
8
7,8
6,7,8
9
8,9
7,8,9
0
1,0
1,2,0
9,0
1,9,0
8,9,0
A
B
A,B
C
B,C
A,B,C
D
C,D
B,C,D
E
D,E
C,D,E
F
E,F
D,E,F
G
F,G
E,F,G
H
G,H
F,G,H
I
H,I
G,H,I
I,J
H,I,J
K
I,J,K
L
K,L
M
L,M
K,L,M
N
M,N
L,M,N
O
N,O
M,N,O
P
O,P
N,O,P
Q
P,Q
O,P,Q
Q,R
P,Q,R
S
Q,R,S
T
S,T
U
T,U
S,T,U
V
U,V
T,U,V
V,W
U,V,W
X
V,W,X
Y
X,Y
Z
A,Z
A,B,Z
Y,Z
A,Y,Z
X,Y,Z
drop table t2;
---- Partitioning and blob data type
create table t1 (a blob not null, primary key(a(767))) engine='MyISAM' 
partition by key (a) (
partition pa1 max_rows=20 min_rows=2,
partition pa2 max_rows=30 min_rows=3,
partition pa3 max_rows=30 min_rows=4,
partition pa4 max_rows=40 min_rows=2);
ERROR HY000: A BLOB field is not allowed in partition function
create table t2 (a blob not null, primary key(a(767))) engine='MyISAM' 
partition by key (a) partitions 30;
ERROR HY000: A BLOB field is not allowed in partition function
create table t2 (a tinyblob not null, primary key(a(767))) engine='MyISAM' 
partition by key (a) partitions 30;
ERROR HY000: A BLOB field is not allowed in partition function
create table t2 (a mediumblob not null, primary key(a(767))) engine='MyISAM' 
partition by key (a) partitions 30;
ERROR HY000: A BLOB field is not allowed in partition function
create table t2 (a longblob not null, primary key(a(767))) engine='MyISAM' 
partition by key (a) partitions 30;
ERROR HY000: A BLOB field is not allowed in partition function
---- Partitioning and text data type
create table t1 (a text not null, primary key(a(767))) engine='MyISAM' 
partition by key (a) (
partition pa1 max_rows=20 min_rows=2,
partition pa2 max_rows=30 min_rows=3,
partition pa3 max_rows=30 min_rows=4,
partition pa4 max_rows=40 min_rows=2);
ERROR HY000: A BLOB field is not allowed in partition function
create table t2 (a tinytext not null, primary key(a(767))) engine='MyISAM' 
partition by key (a) partitions 30;
ERROR HY000: A BLOB field is not allowed in partition function
create table t2 (a mediumtext not null, primary key(a(767))) engine='MyISAM' 
partition by key (a) partitions 30;
ERROR HY000: A BLOB field is not allowed in partition function
create table t2 (a longtext not null, primary key(a(767))) engine='MyISAM' 
partition by key (a) partitions 30;
ERROR HY000: A BLOB field is not allowed in partition function