1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
create table t1 (s1 binary(3));
insert into t1 values (0x61), (0x6120), (0x612020);
select hex(s1) from t1;
hex(s1)
610000
612000
612020
drop table t1;
create table t1 (s1 binary(2), s2 varbinary(2));
insert into t1 values (0x4100,0x4100);
select length(concat('*',s1,'*',s2,'*')) from t1;
length(concat('*',s1,'*',s2,'*'))
7
delete from t1;
insert into t1 values (0x4120,0x4120);
select length(concat('*',s1,'*',s2,'*')) from t1;
length(concat('*',s1,'*',s2,'*'))
7
drop table t1;
create table t1 (s1 varbinary(20), s2 varbinary(20));
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`s1` varbinary(20) DEFAULT NULL,
`s2` varbinary(20) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
insert into t1 values (0x41,0x4100),(0x41,0x4120),(0x4100,0x4120);
select hex(s1), hex(s2) from t1;
hex(s1) hex(s2)
41 4100
41 4120
4100 4120
select count(*) from t1 where s1 < s2;
count(*)
3
drop table t1;
create table t1 (s1 varbinary(2), s2 varchar(1));
insert into t1 values (0x41,'a'), (0x4100,'b'), (0x41,'c'), (0x4100,'d');
select hex(s1),s2 from t1 order by s1,s2;
hex(s1) s2
41 a
41 c
4100 b
4100 d
drop table t1;
create table t1 (s1 binary(2) primary key);
insert into t1 values (0x01);
insert into t1 values (0x0120);
insert into t1 values (0x0100);
ERROR 23000: Duplicate entry '\x01' for key 'PRIMARY'
select hex(s1) from t1 order by s1;
hex(s1)
0100
0120
select hex(s1) from t1 where s1=0x01;
hex(s1)
select hex(s1) from t1 where s1=0x0120;
hex(s1)
0120
select hex(s1) from t1 where s1=0x0100;
hex(s1)
0100
select count(distinct s1) from t1;
count(distinct s1)
2
alter table t1 drop primary key;
select hex(s1) from t1 where s1=0x01;
hex(s1)
select hex(s1) from t1 where s1=0x0120;
hex(s1)
0120
select hex(s1) from t1 where s1=0x0100;
hex(s1)
0100
select count(distinct s1) from t1;
count(distinct s1)
2
drop table t1;
create table t1 (s1 varbinary(2) primary key);
insert into t1 values (0x01);
insert into t1 values (0x0120);
insert into t1 values (0x0100);
select hex(s1) from t1 order by s1;
hex(s1)
01
0100
0120
select hex(s1) from t1 where s1=0x01;
hex(s1)
01
select hex(s1) from t1 where s1=0x0120;
hex(s1)
0120
select hex(s1) from t1 where s1=0x0100;
hex(s1)
0100
select count(distinct s1) from t1;
count(distinct s1)
3
alter table t1 drop primary key;
select hex(s1) from t1 where s1=0x01;
hex(s1)
01
select hex(s1) from t1 where s1=0x0120;
hex(s1)
0120
select hex(s1) from t1 where s1=0x0100;
hex(s1)
0100
select count(distinct s1) from t1;
count(distinct s1)
3
drop table t1;
select hex(cast(0x10 as binary(2)));
hex(cast(0x10 as binary(2)))
1000
create table t1 (b binary(2), vb varbinary(2));
insert into t1 values(0x4120, 0x4120);
insert into t1 values(0x412020, 0x412020);
Warnings:
Warning 1265 Data truncated for column 'b' at row 1
Warning 1265 Data truncated for column 'vb' at row 1
drop table t1;
create table t1 (c char(2), vc varchar(2));
insert into t1 values(0x4120, 0x4120);
insert into t1 values(0x412020, 0x412020);
Warnings:
Note 1265 Data truncated for column 'vc' at row 1
drop table t1;
set @old_sql_mode= @@sql_mode, sql_mode= 'traditional';
create table t1 (b binary(2), vb varbinary(2));
insert into t1 values(0x4120, 0x4120);
insert into t1 values(0x412020, NULL);
ERROR 22001: Data too long for column 'b' at row 1
insert into t1 values(NULL, 0x412020);
ERROR 22001: Data too long for column 'vb' at row 1
drop table t1;
set @@sql_mode= @old_sql_mode;
create table t1(f1 int, f2 binary(2) not null, f3 char(2) not null);
insert into t1 set f1=1;
Warnings:
Warning 1364 Field 'f2' doesn't have a default value
Warning 1364 Field 'f3' doesn't have a default value
select hex(f2), hex(f3) from t1;
hex(f2) hex(f3)
0000
drop table t1;
End of 5.0 tests
|
