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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
CALL mtr.add_suppression("Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT");
drop table if exists t1,t2;
CREATE TABLE t1 (
Period smallint(4) unsigned zerofill DEFAULT '0000' NOT NULL,
Varor_period smallint(4) unsigned DEFAULT '0' NOT NULL
) ENGINE=blackhole;
Warnings:
Warning 1681 The ZEROFILL attribute is deprecated and will be removed in a future release. Use the LPAD function to zero-pad numbers, or store the formatted numbers in a CHAR column.
Warning 1681 Integer display width is deprecated and will be removed in a future release.
Warning 1681 Integer display width is deprecated and will be removed in a future release.
INSERT INTO t1 VALUES (9410,9412);
select period from t1;
period
select * from t1;
Period Varor_period
select t1.* from t1;
Period Varor_period
CREATE TABLE t2 (
auto int NOT NULL auto_increment,
fld1 int(6) unsigned zerofill DEFAULT '000000' NOT NULL,
companynr tinyint(2) unsigned zerofill DEFAULT '00' NOT NULL,
fld3 char(30) DEFAULT '' NOT NULL,
fld4 char(35) DEFAULT '' NOT NULL,
fld5 char(35) DEFAULT '' NOT NULL,
fld6 char(4) DEFAULT '' NOT NULL,
primary key (auto)
) ENGINE=blackhole;
Warnings:
Warning 1681 The ZEROFILL attribute is deprecated and will be removed in a future release. Use the LPAD function to zero-pad numbers, or store the formatted numbers in a CHAR column.
Warning 1681 Integer display width is deprecated and will be removed in a future release.
Warning 1681 The ZEROFILL attribute is deprecated and will be removed in a future release. Use the LPAD function to zero-pad numbers, or store the formatted numbers in a CHAR column.
Warning 1681 Integer display width is deprecated and will be removed in a future release.
INSERT INTO t2 VALUES (1192,068305,00,'Colombo','hardware','colicky','');
INSERT INTO t2 VALUES (1193,000000,00,'nondecreasing','implant','thrillingly','');
select t2.fld3 from t2 where companynr = 58 and fld3 like "%imaginable%";
fld3
select fld3 from t2 where fld3 like "%cultivation" ;
fld3
select t2.fld3,companynr from t2 where companynr = 57+1 order by fld3;
fld3 companynr
select fld3,companynr from t2 where companynr = 58 order by fld3;
fld3 companynr
select fld3 from t2 order by fld3 desc limit 10;
fld3
select fld3 from t2 order by fld3 desc limit 5;
fld3
select fld3 from t2 order by fld3 desc limit 5,5;
fld3
select t2.fld3 from t2 where fld3 = 'honeysuckle';
fld3
select t2.fld3 from t2 where fld3 LIKE 'honeysuckl_';
fld3
select t2.fld3 from t2 where fld3 LIKE 'hon_ysuckl_';
fld3
select t2.fld3 from t2 where fld3 LIKE 'honeysuckle%';
fld3
select t2.fld3 from t2 where fld3 LIKE 'h%le';
fld3
select t2.fld3 from t2 where fld3 LIKE 'honeysuckle_';
fld3
select t2.fld3 from t2 where fld3 LIKE 'don_t_find_me_please%';
fld3
select t2.fld3 from t2 where fld3 >= 'honeysuckle' and fld3 <= 'honoring' order by fld3;
fld3
select fld1,fld3 from t2 where fld3="Colombo" or fld3 = "nondecreasing" order by fld3;
fld1 fld3
DROP TABLE t1;
CREATE TABLE t1 (a VARCHAR(200), b TEXT, FULLTEXT (a,b));
INSERT INTO t1 VALUES('MySQL has now support', 'for full-text search'),
('Full-text indexes', 'are called collections'),
('Only MyISAM tables','support collections'),
('Function MATCH ... AGAINST()','is used to do a search'),
('Full-text search in MySQL', 'implements vector space model');
ANALYZE TABLE t1;
Table Op Msg_type Msg_text
test.t1 analyze status OK
SHOW INDEX FROM t1;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment Visible Expression
t1 1 a 1 a NULL 5 NULL NULL YES FULLTEXT YES NULL
t1 1 a 2 b NULL 5 NULL NULL YES FULLTEXT YES NULL
select * from t1 where MATCH(a,b) AGAINST ("collections");
a b
Full-text indexes are called collections
Only MyISAM tables support collections
explain select * from t1 where MATCH(a,b) AGAINST ("collections");
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL fulltext a a 0 const 1 100.00 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (match `test`.`t1`.`a`,`test`.`t1`.`b` against ('collections'))
select * from t1 where MATCH(a,b) AGAINST ("indexes");
a b
Full-text indexes are called collections
select * from t1 where MATCH(a,b) AGAINST ("indexes collections");
a b
Full-text indexes are called collections
Only MyISAM tables support collections
select * from t1 where MATCH(a,b) AGAINST ("only");
a b
reset master;
drop table t1,t2;
create table t1 (a int) engine=blackhole;
delete from t1 where a=10;
update t1 set a=11 where a=15;
insert into t1 values(1);
insert ignore into t1 values(1);
replace into t1 values(100);
create table t2 (a varchar(200)) engine=blackhole;
load data infile '../../std_data/words.dat' into table t2;
alter table t1 add b int;
alter table t1 drop b;
create table t3 like t1;
insert into t1 select * from t3;
replace into t1 select * from t3;
Warnings:
Note 1592 Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. REPLACE... SELECT is unsafe because the order in which rows are retrieved by the SELECT determines which (if any) rows are replaced. This order cannot be predicted and may differ on source and the replica.
select * from t1;
a
select * from t2;
a
select * from t3;
a
include/show_binlog_events.inc
Log_name Pos Event_type Server_id End_log_pos Info
binlog.000001 # Query # # use `test`; DROP TABLE `t1` /* generated by server */
binlog.000001 # Query # # use `test`; DROP TABLE `t2` /* generated by server */
binlog.000001 # Query # # use `test`; create table t1 (a int) engine=blackhole
binlog.000001 # Query # # BEGIN
binlog.000001 # Query # # use `test`; delete from t1 where a=10
binlog.000001 # Query # # COMMIT
binlog.000001 # Query # # BEGIN
binlog.000001 # Query # # use `test`; update t1 set a=11 where a=15
binlog.000001 # Query # # COMMIT
binlog.000001 # Query # # BEGIN
binlog.000001 # Query # # use `test`; insert into t1 values(1)
binlog.000001 # Query # # COMMIT
binlog.000001 # Query # # BEGIN
binlog.000001 # Query # # use `test`; insert ignore into t1 values(1)
binlog.000001 # Query # # COMMIT
binlog.000001 # Query # # BEGIN
binlog.000001 # Query # # use `test`; replace into t1 values(100)
binlog.000001 # Query # # COMMIT
binlog.000001 # Query # # use `test`; create table t2 (a varchar(200)) engine=blackhole
binlog.000001 # Query # # BEGIN
binlog.000001 # Begin_load_query # # ;file_id=#;block_len=#
binlog.000001 # Execute_load_query # # use `test`; LOAD DATA INFILE '../../std_data/words.dat' INTO TABLE `t2` FIELDS TERMINATED BY '\t' ENCLOSED BY '' ESCAPED BY '\\' LINES TERMINATED BY '\n' (`a`) ;file_id=#
binlog.000001 # Query # # COMMIT
binlog.000001 # Query # # use `test`; alter table t1 add b int
binlog.000001 # Query # # use `test`; alter table t1 drop b
binlog.000001 # Query # # use `test`; create table t3 like t1
binlog.000001 # Query # # BEGIN
binlog.000001 # Query # # use `test`; insert into t1 select * from t3
binlog.000001 # Query # # COMMIT
binlog.000001 # Query # # BEGIN
binlog.000001 # Query # # use `test`; replace into t1 select * from t3
binlog.000001 # Query # # COMMIT
drop table t1,t2,t3;
CREATE TABLE t1(a INT, b INT) ENGINE=BLACKHOLE;
DELETE FROM t1 WHERE a=10;
ALTER TABLE t1 ADD INDEX(a);
DELETE FROM t1 WHERE a=10;
ALTER TABLE t1 DROP INDEX a;
ALTER TABLE t1 ADD UNIQUE INDEX(a);
DELETE FROM t1 WHERE a=10;
ALTER TABLE t1 DROP INDEX a;
ALTER TABLE t1 ADD PRIMARY KEY(a);
DELETE FROM t1 WHERE a=10;
DROP TABLE t1;
reset master;
create table t1 (a int) engine=blackhole;
set autocommit=0;
start transaction;
insert into t1 values(1);
commit;
start transaction;
insert into t1 values(2);
rollback;
set autocommit=1;
drop table if exists t1;
reset master;
create table t1 (a int auto_increment, primary key (a)) engine=blackhole;
insert into t1 values (11), (NULL), (NULL), (NULL);
set insert_id= 3;
insert into t1 values (NULL), (33), (NULL);
set insert_id= 5;
insert into t1 values (55), (NULL);
include/show_binlog_events.inc
Log_name Pos Event_type Server_id End_log_pos Info
binlog.000001 # Query # # use `test`; create table t1 (a int auto_increment, primary key (a)) engine=blackhole
binlog.000001 # Query # # BEGIN
binlog.000001 # Intvar # # INSERT_ID=1
binlog.000001 # Query # # use `test`; insert into t1 values (11), (NULL), (NULL), (NULL)
binlog.000001 # Query # # COMMIT
binlog.000001 # Query # # BEGIN
binlog.000001 # Intvar # # INSERT_ID=3
binlog.000001 # Query # # use `test`; insert into t1 values (NULL), (33), (NULL)
binlog.000001 # Query # # COMMIT
binlog.000001 # Query # # BEGIN
binlog.000001 # Intvar # # INSERT_ID=5
binlog.000001 # Query # # use `test`; insert into t1 values (55), (NULL)
binlog.000001 # Query # # COMMIT
drop table t1;
|
