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6
MariaDB : Memory and Files
Oracle MySQL
Memory cache •PGA (per server process)
•Hash area •Join Buffer (per client session)
•Sort area •Sort Buffer (per client session)
•Stack area •stack (per client session)
•SGA
•Shared pool •(Query Cache)
•DB buffer cache •Key Buffer [MyISAM]
•InnoDB Buffer Cache [InnoDB]
•REDO log buffer •InnoDB Log Buffer [InnoDB]
Files •init.ora •my.cnf / my.ini
•System tablespace file •`mysql` directory
•User tablespace files •directories in `data` directory
•InnoDB tablespace files [InnoDB]](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-6-2048.jpg?cb=1666786671)
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7
MariaDB : Redo & Undo Logs
Oracle MySQL
REDO/UNDO
Logs
•REDO logs •InnoDB logs [InnoDB]
•Binary log
•Archive logs •Binary log
•UNDO tablespace files •InnoDB tablespace files [InnoDB]](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-7-2048.jpg?cb=1666786671)
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13
MariaDB : Installation Step
[root@sys4u ~]# groupadd -g 600 dba
[root@sys4u ~]# useradd -g 600 -u 605 mysql
[root@sys4u ~]# usermod -g 600 mysql
[root@sys4u ~]# usermod -u 605 mysql
[root@sys4u ~]# passwd mysql
Changing password for user mysql.
New password:
Retype new password:
passwd: all authentication tokens updated successfully.
# vi /etc/security/limits.conf
# Below the line
mysql soft nproc 8192
mysql hard nproc 16384
mysql soft nofile 8192
mysql hard nofile 65536
# vi /etc/pam.d/login
# Below the line
session required pam_limits.so
# vi /etc/profile
# Below the line
if [ $USER = "mysql" ]; then
if [ $SHELL = "/bin/ksh" ]; then
ulimit -p 16384
ulimit -n 65536
else
ulimit -u 16384 -n 65536
fi](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-13-2048.jpg?cb=1666786671)
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14
MariaDB : Installation Step
[root@sys4u ~]# mkdir -p /home/mariadb
[root@sys4u ~]# mkdir -p /home/data/mariadb-data
[root@sys4u ~]# mkdir -p /home/data/mariadb-tmp
[root@sys4u ~]# mkdir -p /home/data/mariadb-iblog
[root@sys4u ~]# mkdir -p /home/data/mariadb-binlog
[root@sys4u ~]# chown -R mysql:dba /home/mariadb/
[root@sys4u ~]# chown -R mysql:dba /home/data/*
[root@sys4u mariadb]# ls
cmake-2.8.4.tar.gz mariadb-5.5.30.tar.gz
[root@sys4u mariadb]# tar -xvf cmake-2.8.4
[root@sys4u mariadb]# ls
cmake-2.8.4 cmake-2.8.4.tar.gz mariadb-5.5.30.tar.gz
[root@sys4u mariadb]# cd cmake-2.8.4
[root@sys4u cmake-2.8.4]# ls
CMakeCPack.cmake ChangeLog.txt Source
CMakeCPackOptions.cmake.in CompileFlags.cmake Templates
CMakeGraphVizOptions.cmake Copyright.txt Tests
CMakeLists.txt DartConfig.cmake Utilities
CMakeLogo.gif DartLocal.conf.in bootstrap
CTestConfig.cmake Docs cmake.1
CTestCustom.cmake.in Example cmake_uninstall.cmake.in
CTestCustom.ctest.in Modules configure
ChangeLog.manual Readme.txt doxygen.config
[root@sys4u cmake-2.8.4]# ./bootstrap
---------------------------------------------
-----
-----
---------------------------------------------
Log of errors: /home/mariadb/cmake-2.8.4/Bootstrap.cmk/cmake_bootstrap.log
---------------------------------------------](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-14-2048.jpg?cb=1666786671)
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15
MariaDB : Installation Step
[[root@sys4u cmake-2.8.4]# yum -y install gcc-c++
-----
Loaded plugins: fastestmirror, security
base | 3.7 kB 00:00
base/primary_db | 4.4 MB 00:00
extras | 3.4 kB 00:00
extras/primary_db | 19 kB 00:00
updates | 3.4 kB 00:00
updates/primary_db | 3.2 MB 00:00
Setting up Install Process
Resolving Dependencies
--> Running transaction check
-----
[root@sys4u cmake-2.8.4]# ./bootstrap
-----
Makefile processor on this system is: gmake
g++ is GNU compiler
g++ has STL in std:: namespace
g++ has ANSI streams
g++ has streams in std:: namespace
g++ has sstream
g++ has operator!=(string, char*)
g++ has stl iterator_traits
g++ has standard template allocator
g++ has allocator<>::rebind<>
g++ does not have non-standard allocator<>::max_size argument
-----
[root@sys4u cmake-2.8.4]# make
-----
Scanning dependencies of target cmsys
[ 1%] Building C object Source/kwsys/CMakeFiles/cmsys.dir/Terminal.o
[ 2%] Building C object Source/kwsys/CMakeFiles/cmsys.dir/System.o
-----](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-15-2048.jpg?cb=1666786671)
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16
MariaDB : Installation Step
[root@sys4u cmake-2.8.4]# make install
-----
Install the project...
-- Install configuration: ""
-- Installing: /usr/local/doc/cmake-2.8/Copyright.txt
-- Installing: /usr/local/share/cmake-2.8/Modules
-- Installing: /usr/local/share/cmake-2.8/Modules/FindPerl.cmake
-- Installing: /usr/local/share/cmake-2.8/Modules/FindLibArchive.cmake
-- Installing: /usr/local/share/cmake-2.8/Modules/CMakeDetermineASMCompiler.cmake
-- Installing: /usr/local/share/cmake-2.8/Modules/CMakeExportBuildSettings.cmake
-- Installing: /usr/local/share/cmake-2.8/Modules/FindJPEG.cmake
-----](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-16-2048.jpg?cb=1666786671)
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17
MariaDB : Installation Step
# vi /etc/my.cnf
-----
#[mysqld]
#datadir=/var/lib/mysql
#socket=/var/lib/mysql/mysql.sock
#user=mysql
## Disabling symbolic-links is recommended to prevent assorted security risks
#symbolic-links=0
#[mysqld_safe]
#log-error=/var/log/mysqld.log
#pid-file=/var/run/mysqld/mysqld.pid
[client]
port = 3306
socket = /usr/local/mysql/mysql.socket
[mysqld]
# generic configuration options
port = 3306
socket = /usr/local/mysql/mysql.socket
back_log = 100
max_connections = 500
max_connect_errors = 10
table_open_cache = 2048
max_allowed_packet = 16M
join_buffer_size = 8M
read_buffer_size = 2M
read_rnd_buffer_size = 16M
sort_buffer_size = 8M
thread_stack = 192K
lower_case_table_names = 0
-----](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-17-2048.jpg?cb=1666786671)
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18
MariaDB : Installation Step
[root@sys4u cmake-2.8.4]# cd /home/mariadb/
[root@sys4u mariadb]# ls
cmake-2.8.4 cmake-2.8.4.tar.gz mariadb-5.5.30.tar.gz
[root@sys4u mariadb]# tar -xvf mariadb-5.5.30.tar.gz
-----
mariadb-5.5.30/mysql-test/suite/sys_vars/r/warning_count_basic.result
mariadb-5.5.30/mysql-test/suite/sys_vars/r/thread_stack_basic.result
mariadb-5.5.30/mysql-test/suite/sys_vars/r/default_week_format_basic.result
mariadb-5.5.30/mysql-test/suite/sys_vars/r/collation_server_basic.result
mariadb-5.5.30/mysql-test/suite/sys_vars/r/shared_memory_basic.result
mariadb-5.5.30/mysql-test/suite/sys_vars/r/innodb_log_group_home_dir_basic.result
mariadb-5.5.30/mysql-test/suite/sys_vars/r/slave_sql_verify_checksum_basic.result
mariadb-5.5.30/mysql-test/suite/sys_vars/r/innodb_merge_sort_block_size_basic.result
mariadb-5.5.30/mysql-test/suite/sys_vars/r/general_log_file_func.result
mariadb-5.5.30/mysql-test/suite/sys_vars/r/thread_pool_size_basic.result
mariadb-5.5.30/mysql-test/suite/sys_vars/r/sync_master_info_basic.result
-----
[root@sys4u mariadb-5.5.30]# /usr/local/bin/cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DDEFAULT_CHARSET=utf8
-DDEFAULT_COLLATION=utf8_general_ci -DWITH_EXTRA_CHARSETS=all -DMYSQL_DATADIR=/usr/local/mysql/data -
DENABLED_LOCAL_INFILE=1 -DWITH_INNOBASE_STORAGE_ENGINE=1 -DMYSQL_UNIX_ADDR=/usr/local/mysql/mysql.socket
-----
-- Looking for access - found
-- Looking for aio_read
-- Looking for aio_read - found
-- Looking for alarm
-- Looking for alarm - found
-- Looking for backtrace
-- Looking for backtrace - found
-- Looking for backtrace_symbols
-- Looking for backtrace_symbols - found
-- Looking for backtrace_symbols_fd
-----](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-18-2048.jpg?cb=1666786671)
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19
MariaDB : Installation Step
[root@sys4u mysql]# chown -R mysql:dba /usr/local/mysql*
[root@sys4u mysql]# chown mysql:dba /etc/my.cnf
export MYSQL_HOME=/usr/local/mysql
export PATH=$PATH:$MYSQL_HOME/bin:.
export ADMIN_PWD="root password”
alias ll="ls -al --color=auto"
alias mydba="mysql -uroot -p$ADMIN_PWD"
alias mymaster="mysql -uroot -p$ADMIN_PWD -e'show master status;'"
alias myslave="mysql -uroot -p$ADMIN_PWD -e'show slave statusG'"
alias mh="cd $MYSQL_HOME"
alias md="cd /home/data/mariadb-data"
alias mt="cd /home/data/mariadb-tmp“
-----
[root@sys4u mysql]# cd /usr/local/mysql/
[root@sys4u mysql]# ./scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql/
-----
WARNING: The host 'sys4u.co.kr' could not be looked up with resolveip.
This probably means that your libc libraries are not 100 % compatible
with this binary MariaDB version. The MariaDB daemon, mysqld, should work
normally with the exception that host name resolving will not work.
This means that you should use IP addresses instead of hostnames
when specifying MariaDB privileges !
Installing MariaDB/MySQL system tables in '/home/data/mariadb-data' ...
OK
-----](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-19-2048.jpg?cb=1666786671)
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20
MariaDB : Installation Step
[root@sys4u ~]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
cp: overwrite `/etc/init.d/mysqld'? y
# /etc/init.d/mysqld
46 basedir=/home/mariadb
47 datadir=/home/data/mariadb-data
[root@sys4u ~]# /usr/local/mysql/bin/mysql
Welcome to the MariaDB monitor. Commands end with ; or g.
Your MariaDB connection id is 2
Server version: 5.5.30-MariaDB-log Source distribution
Copyright (c) 2000, 2013, Oracle, Monty Program Ab and others.
Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.
MariaDB [(none)]>](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-20-2048.jpg?cb=1666786671)
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21
MariaDB : Installation Step
MariaDB [(none)]> use mysql
Database changed
MariaDB [mysql]> create database orademo;
Query OK, 1 row affected (0.00 sec)
MariaDB [mysql]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| orademo |
| performance_schema |
| test |
+--------------------+
5 rows in set (0.00 sec)
MariaDB [mysql]> grant all privileges on *.* to 'root'@'%' identified by ‘’ecsses;
Query OK, 0 rows affected (0.03 sec)
MariaDB [mysql]> select host, user, password from user;
+-------------+------+-------------------------------------------+
| host | user | password |
+-------------+------+-------------------------------------------+
| localhost | root | |
| sys4u.co.kr | root | |
| 127.0.0.1 | root | |
| ::1 | root | |
| localhost | | |
| sys4u.co.kr | | |
| % | root | *077D2C382FBC8EF28EFF2EF07C9BAD1595F0AB6D |
+-------------+------+-------------------------------------------+
7 rows in set (0.00 sec)
MariaDB [mysql]> flush privileges;
Query OK, 0 rows affected (0.00 sec)](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-21-2048.jpg?cb=1666786671)
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22
MariaDB : MariaDB Server Startup & Shutdown
[root@sys4u ~]# /etc/init.d/mysqld start
Starting MySQL.... [ OK ]
[root@sys4u ~]# /usr/local/mysql/bin/mysql -uroot -p
Enter password:
Welcome to the MariaDB monitor. Commands end with ; or g.
Your MariaDB connection id is 3
Server version: 5.5.37-tokudb-7.1.6-MariaDB-log MariaDB Server
Copyright (c) 2000, 2013, Oracle, Monty Program Ab and others.
Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.
MariaDB [(none)]> use mysql
Database changed
MariaDB [mysql]> exit
Bye
[root@sys4u ~]# /etc/init.d/mysqld stop
Shutting down MySQL.. [ OK ]](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-22-2048.jpg?cb=1666786671)
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23
MariaDB : Create DB & User
MariaDB [(none)]> create database firstdb; (or create database firstdb default charcter set utf8mb4;)
Query OK, 1 row affected (0.03 sec)
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| firstdb |
| mysql |
| orademo |
| performance_schema |
| test |
+--------------------+
6 rows in set (0.10 sec)](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-23-2048.jpg?cb=1666786671)
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24
MariaDB : Create DB & User
MariaDB [(none)]> create database firstdb; (or create database firstdb default charcter set utf8mb4;)
Query OK, 1 row affected (0.03 sec)
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| firstdb |
| mysql |
| orademo |
| performance_schema |
| test |
+--------------------+
6 rows in set (0.10 sec)](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-24-2048.jpg?cb=1666786671)
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25
MariaDB : Create Table
MariaDB [firstdb]> create table tab_test (
-> tid bigint not null auto_increment,
-> tname varchar(100) not null,
-> tmeno text not null,
-> primary key(tid),
-> index ix_tname_tid (tname, tid)
-> ) ENGINE=InnoDB;
MariaDB [firstdb]> show create table tab_test;
------------+
| Table | Create Table |
+----------+-----------------------------------------------------------------------------------------------------
| tab_test | CREATE TABLE `tab_test` (
`tid` bigint(20) NOT NULL AUTO_INCREMENT,
`tname` varchar(100) NOT NULL,
`tmeno` text NOT NULL,
PRIMARY KEY (`tid`),
KEY `ix_tname_tid` (`tname`,`tid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 |
+----------+-----------------------------------------------------------------------------------------------------
------------+
1 row in set (0.11 sec)
MariaDB [firstdb]> desc tab_test;
+-------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------+--------------+------+-----+---------+----------------+
| tid | bigint(20) | NO | PRI | NULL | auto_increment |
| tname | varchar(100) | NO | MUL | NULL | |
| tmeno | text | NO | | NULL | |
+-------+--------------+------+-----+---------+----------------+
3 rows in set (0.00 sec)](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-25-2048.jpg?cb=1666786671)
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26
MariaDB : Modify table (ONLINE/OFFLINE)
MariaDB [firstdb]> create table t1 (fd1 int, fd2 enum('red', 'green'));
Query OK, 0 rows affected (0.00 sec)
MariaDB [firstdb]> alter online table t1 modify fd2 enum('red', 'green', 'blue');
Query OK, 0 rows affected (0.01 sec)
Records: 0 Duplicates: 0 Warnings: 0
MariaDB [firstdb]> alter online table t1 add fd3 int;
ERROR 1915 (HY000): Can't execute the given 'ALTER' command as online
Don't Need : Data Copy to Temp Table
– Modify Table Names
– Modify Column Names
– Modify Number Type Column Length
– Modify Table Comment
– ENUM Type item add
Online Modify Schema : MariaDB 10.0, MySQL 5.6 Over](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-26-2048.jpg?cb=1666786671)
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27
MariaDB : Modify table (ONLINE/OFFLINE)
MariaDB [firstdb]> alter table tab_test add created datetime not null;
Query OK, 0 rows affected (0.30 sec)
Records: 0 Duplicates: 0 Warnings: 0
MariaDB [firstdb]> alter table tab_test add index ix_created (created);
Query OK, 0 rows affected (0.18 sec)
Records: 0 Duplicates: 0 Warnings: 0
MariaDB [firstdb]> desc tab_test;
+---------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+---------+--------------+------+-----+---------+----------------+
| tid | bigint(20) | NO | PRI | NULL | auto_increment |
| tname | varchar(100) | NO | MUL | NULL | |
| tmeno | text | NO | | NULL | |
| created | datetime | NO | MUL | NULL | |
+---------+--------------+------+-----+---------+----------------+
4 rows in set (0.00 sec)](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-27-2048.jpg?cb=1666786671)
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28
MariaDB : DML (INSERT)
MariaDB [firstdb]> create table tab_test (
-> fd1 int not null,
-> fd2 varchar(50),
-> primary key(fd1)) engine=innodb;
Query OK, 0 rows affected (0.09 sec)
MariaDB [firstdb]> insert into tab_test (fd1, fd2) values (1,'Matt');
Query OK, 1 row affected (0.06 sec)
MariaDB [firstdb]> insert into tab_test values (2, 'Toto');
Query OK, 1 row affected (0.00 sec)
MariaDB [firstdb]> insert into tab_test(fd1, fd2)
-> values (3,'Lee') on duplicate key update fd2='Lee';
Query OK, 1 row affected (0.03 sec)
MariaDB [firstdb]> insert into tab_test(fd1, fd2)
-> values (3, 'SeongUck') on duplicate key update fd2='SeongUck';
Query OK, 2 rows affected (0.04 sec)
MariaDB [firstdb]> select * from tab_test;
+-----+----------+
| fd1 | fd2 |
+-----+----------+
| 1 | Matt |
| 2 | Toto |
| 3 | SeongUck |
+-----+----------+
3 rows in set (0.00 sec)
Option) ON DUPLICATE KEY UPDATE](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-28-2048.jpg?cb=1666786671)
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29
MariaDB : DML (SELECT)
MariaDB [firstdb]> select * from tab_test;
+-----+----------+
| fd1 | fd2 |
+-----+----------+
| 1 | Matt |
| 2 | Toto |
| 3 | SeongUck |
+-----+----------+
3 rows in set (0.00 sec)
MariaDB [firstdb]> select * from tab_testG;
*************************** 1. row ***************************
fd1: 1
fd2: Matt
*************************** 2. row ***************************
fd1: 2
fd2: Toto
*************************** 3. row ***************************
fd1: 3
fd2: SeongUck
3 rows in set (0.00 sec)](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-29-2048.jpg?cb=1666786671)
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30
MariaDB : DML (UPDATE)
MariaDB [firstdb]> update tab_test set fd2='Brandon' where fd1=1;
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0
MariaDB [firstdb]> select * from tab_test where fd1=1;
+-----+---------+
| fd1 | fd2 |
+-----+---------+
| 1 | Brandon |
+-----+---------+
1 row in set (0.06 sec)
MariaDB [firstdb]> select * from tab_test where fd1=1;
+-----+---------+
| fd1 | fd2 |
+-----+---------+
| 1 | Brandon |
+-----+---------+
1 row in set (0.06 sec)
MariaDB [firstdb]> update tab_test set fd2='Brandon';
Query OK, 2 rows affected (0.03 sec)
Rows matched: 3 Changed: 2 Warnings: 0
MariaDB [firstdb]> select * from tab_test;
+-----+---------+
| fd1 | fd2 |
+-----+---------+
| 1 | Brandon |
| 2 | Brandon |
| 3 | Brandon |
+-----+---------+
3 rows in set (0.01 sec)
caution](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-30-2048.jpg?cb=1666786671)
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31
MariaDB : DML (REPLACE)
MariaDB [firstdb]> replace tab_test set fd1=1, fd2='Matt';
Query OK, 2 rows affected (0.00 sec)
MariaDB [firstdb]> select * from tab_test where fd1=1;
+-----+------+
| fd1 | fd2 |
+-----+------+
| 1 | Matt |
+-----+------+
1 row in set (0.00 sec)
REPLACE <-> UPDATE
– If, PK or Unique key : Recode Delete & Insert
– System Over head
– Recommended : INSERT INTO … ON DUPLICATE KEY UP-DATE](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-31-2048.jpg?cb=1666786671)
![Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee
Blog : http://ora-sysdba.tistory.com/
32
MariaDB : DML (DELETE)
MariaDB [firstdb]> delete from tab_test where fd1=1;
Query OK, 0 rows affected (0.00 sec)
MariaDB [firstdb]> select * from tab_test;
+-----+---------+
| fd1 | fd2 |
+-----+---------+
| 2 | Brandon |
| 3 | Brandon |
+-----+---------+
2 rows in set (0.00 sec)
MariaDB : AUTO Commit](https://image.slidesharecdn.com/01-140708212836-phpapp02/75/introduction-to-mariadb-32-2048.jpg?cb=1666786671)
Introduction to MariaDB
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Introduction to MariaDB
- 1. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 1 MariaDB : About MariaDB Jong Jin Lee SYS4U I&C EC Solution Lab / Software Engineer
- 2. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 2 Agenda • MariaDB ? • Install MariaDB • Starting MariaDB & Query Execution
- 3. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 3 Percona Server MariaDB : Feature Free & Open Software • Open source Software • Developer Based on MySQL Community Version • Patches, Bug fixes and Feature enhancements (MySQL Community + Monty Program AB) • Development, Roadmap, Release Cycle and Other issues are Open for community User Feature enhanced • New Storage Engine (PBXT, XtraDB, Maria, FederatedX) • Virtual Columns • Services for Plugins • Optimization • Enhancement roadmap is publicly available on the wiki • Backward Compatible • Percona Server (Developer Based on MySQL Server, Onther MySQL Fork Version) MySQL Source Code Maria DB
- 4. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 4 • MariaDB Server • GNU General Public License (“GPL”) • Client Program / Library • GUN Lesser General Public License (“LGPL”) • Community Vesion • GNU General Public License (“GPL”) MariaDB : Licensing Comparison • Commercially licensed • Companies choose between Named User and Per Processor pricing models • Standard vs. Enterprise vs. Personal vs. StandardOne • Per Processor model has multi-core implications • Dual licensed: • GNU General Public License (“GPL”) • Commercial License • MySQL in enterprise use: • Annual Subscription: per server • MySQL in embedded use: • License - per server • Annual Support - per server • MySQL Cluster CGE: • Annual Subscription • License + Annual Support
- 5. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 5 MariaDB : Processes and Threads Oracle DATABASE HR SCOTT SH Table Index DB Schemas Multi- Processes DATAFILE Network File SMON PMON CKPT DBWn ARCx MYSQLD My.CNF INFORMATION SCHEMA ORADEMO TEST DB Single – Process Multi Threads Table Index
- 6. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 6 MariaDB : Memory and Files Oracle MySQL Memory cache •PGA (per server process) •Hash area •Join Buffer (per client session) •Sort area •Sort Buffer (per client session) •Stack area •stack (per client session) •SGA •Shared pool •(Query Cache) •DB buffer cache •Key Buffer [MyISAM] •InnoDB Buffer Cache [InnoDB] •REDO log buffer •InnoDB Log Buffer [InnoDB] Files •init.ora •my.cnf / my.ini •System tablespace file •`mysql` directory •User tablespace files •directories in `data` directory •InnoDB tablespace files [InnoDB]
- 7. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 7 MariaDB : Redo & Undo Logs Oracle MySQL REDO/UNDO Logs •REDO logs •InnoDB logs [InnoDB] •Binary log •Archive logs •Binary log •UNDO tablespace files •InnoDB tablespace files [InnoDB]
- 8. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 8 MariaDB : Security Security Item Oracle MySQL Built-in Accounts SYS, SYSTEM, others Root. Object Privileges Handled GRANT, REVOKE GRANT, REVOKE. Host consideration Privilege Granularity Column, Row Column (row via view) Group Management ROLES On Roadmap SSL Supported Yes Yes Encryption Transparent, RC4, DES, AES, etc. AES, DES, MD5 SHA1; 128/256 Auditing Audit subsystem Handled via logging
- 9. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 9 MariaDB : Data Types Oracle Datatype MySQL Datatype CHAR, VARCHAR(2), NCHAR, NVARCHAR CHAR, VARCHAR, TEXT CLOB, LONG LONGTEXT RAW MEDIUMBLOB LONG RAW, BLOB BLOB BFILE None Oracle Datatype MySQL Datatype NUMBER, DECIMAL INT, BIGINT, DECIMAL NUMBER (P,S), DECIMAL (P,S) DECIMAL (P,S) REAL, DOUBLE DECIMAL FLOAT DOUBLE DATE, TIMESTAMP DATETIME,TIMESTAMP
- 10. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 10 MariaDB : Storage Engine Purpose MariaDB MySQL Memory Engine Memory Memory Based on Disk : Temp Table Engine Aria MyISAM Transaction Engine XtraDB InnoDB NOSQL Support Engine MariaDB 10.0 Over :Cassandra Memcached API (Plug-in)
- 11. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 11 MariaDB : Comparison MariaDB MySQL Thread Pool MariaDB 5.1 Over MySQL 5.5 Enterprise (Not Support Community Vesion) Buffer Pool MariaDB 5.5 Over : XtraDB MySQL 5.6 Over : InnoDB Support SSD (Solid-state Drive) MariaDB 5.5 Over : XtraDB Virtual Columns MariaDB 5.2 Over Role Management MariaDB 10.0 Over
- 12. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 12 MariaDB : Version-specific compatibility MariaDB MySQL 5.1, 5.2, 5.3 5.1 5.5, 10.0 5.5
- 13. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 13 MariaDB : Installation Step [root@sys4u ~]# groupadd -g 600 dba [root@sys4u ~]# useradd -g 600 -u 605 mysql [root@sys4u ~]# usermod -g 600 mysql [root@sys4u ~]# usermod -u 605 mysql [root@sys4u ~]# passwd mysql Changing password for user mysql. New password: Retype new password: passwd: all authentication tokens updated successfully. # vi /etc/security/limits.conf # Below the line mysql soft nproc 8192 mysql hard nproc 16384 mysql soft nofile 8192 mysql hard nofile 65536 # vi /etc/pam.d/login # Below the line session required pam_limits.so # vi /etc/profile # Below the line if [ $USER = "mysql" ]; then if [ $SHELL = "/bin/ksh" ]; then ulimit -p 16384 ulimit -n 65536 else ulimit -u 16384 -n 65536 fi
- 14. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 14 MariaDB : Installation Step [root@sys4u ~]# mkdir -p /home/mariadb [root@sys4u ~]# mkdir -p /home/data/mariadb-data [root@sys4u ~]# mkdir -p /home/data/mariadb-tmp [root@sys4u ~]# mkdir -p /home/data/mariadb-iblog [root@sys4u ~]# mkdir -p /home/data/mariadb-binlog [root@sys4u ~]# chown -R mysql:dba /home/mariadb/ [root@sys4u ~]# chown -R mysql:dba /home/data/* [root@sys4u mariadb]# ls cmake-2.8.4.tar.gz mariadb-5.5.30.tar.gz [root@sys4u mariadb]# tar -xvf cmake-2.8.4 [root@sys4u mariadb]# ls cmake-2.8.4 cmake-2.8.4.tar.gz mariadb-5.5.30.tar.gz [root@sys4u mariadb]# cd cmake-2.8.4 [root@sys4u cmake-2.8.4]# ls CMakeCPack.cmake ChangeLog.txt Source CMakeCPackOptions.cmake.in CompileFlags.cmake Templates CMakeGraphVizOptions.cmake Copyright.txt Tests CMakeLists.txt DartConfig.cmake Utilities CMakeLogo.gif DartLocal.conf.in bootstrap CTestConfig.cmake Docs cmake.1 CTestCustom.cmake.in Example cmake_uninstall.cmake.in CTestCustom.ctest.in Modules configure ChangeLog.manual Readme.txt doxygen.config [root@sys4u cmake-2.8.4]# ./bootstrap --------------------------------------------- ----- ----- --------------------------------------------- Log of errors: /home/mariadb/cmake-2.8.4/Bootstrap.cmk/cmake_bootstrap.log ---------------------------------------------
- 15. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 15 MariaDB : Installation Step [[root@sys4u cmake-2.8.4]# yum -y install gcc-c++ ----- Loaded plugins: fastestmirror, security base | 3.7 kB 00:00 base/primary_db | 4.4 MB 00:00 extras | 3.4 kB 00:00 extras/primary_db | 19 kB 00:00 updates | 3.4 kB 00:00 updates/primary_db | 3.2 MB 00:00 Setting up Install Process Resolving Dependencies --> Running transaction check ----- [root@sys4u cmake-2.8.4]# ./bootstrap ----- Makefile processor on this system is: gmake g++ is GNU compiler g++ has STL in std:: namespace g++ has ANSI streams g++ has streams in std:: namespace g++ has sstream g++ has operator!=(string, char*) g++ has stl iterator_traits g++ has standard template allocator g++ has allocator<>::rebind<> g++ does not have non-standard allocator<>::max_size argument ----- [root@sys4u cmake-2.8.4]# make ----- Scanning dependencies of target cmsys [ 1%] Building C object Source/kwsys/CMakeFiles/cmsys.dir/Terminal.o [ 2%] Building C object Source/kwsys/CMakeFiles/cmsys.dir/System.o -----
- 16. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 16 MariaDB : Installation Step [root@sys4u cmake-2.8.4]# make install ----- Install the project... -- Install configuration: "" -- Installing: /usr/local/doc/cmake-2.8/Copyright.txt -- Installing: /usr/local/share/cmake-2.8/Modules -- Installing: /usr/local/share/cmake-2.8/Modules/FindPerl.cmake -- Installing: /usr/local/share/cmake-2.8/Modules/FindLibArchive.cmake -- Installing: /usr/local/share/cmake-2.8/Modules/CMakeDetermineASMCompiler.cmake -- Installing: /usr/local/share/cmake-2.8/Modules/CMakeExportBuildSettings.cmake -- Installing: /usr/local/share/cmake-2.8/Modules/FindJPEG.cmake -----
- 17. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 17 MariaDB : Installation Step # vi /etc/my.cnf ----- #[mysqld] #datadir=/var/lib/mysql #socket=/var/lib/mysql/mysql.sock #user=mysql ## Disabling symbolic-links is recommended to prevent assorted security risks #symbolic-links=0 #[mysqld_safe] #log-error=/var/log/mysqld.log #pid-file=/var/run/mysqld/mysqld.pid [client] port = 3306 socket = /usr/local/mysql/mysql.socket [mysqld] # generic configuration options port = 3306 socket = /usr/local/mysql/mysql.socket back_log = 100 max_connections = 500 max_connect_errors = 10 table_open_cache = 2048 max_allowed_packet = 16M join_buffer_size = 8M read_buffer_size = 2M read_rnd_buffer_size = 16M sort_buffer_size = 8M thread_stack = 192K lower_case_table_names = 0 -----
- 18. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 18 MariaDB : Installation Step [root@sys4u cmake-2.8.4]# cd /home/mariadb/ [root@sys4u mariadb]# ls cmake-2.8.4 cmake-2.8.4.tar.gz mariadb-5.5.30.tar.gz [root@sys4u mariadb]# tar -xvf mariadb-5.5.30.tar.gz ----- mariadb-5.5.30/mysql-test/suite/sys_vars/r/warning_count_basic.result mariadb-5.5.30/mysql-test/suite/sys_vars/r/thread_stack_basic.result mariadb-5.5.30/mysql-test/suite/sys_vars/r/default_week_format_basic.result mariadb-5.5.30/mysql-test/suite/sys_vars/r/collation_server_basic.result mariadb-5.5.30/mysql-test/suite/sys_vars/r/shared_memory_basic.result mariadb-5.5.30/mysql-test/suite/sys_vars/r/innodb_log_group_home_dir_basic.result mariadb-5.5.30/mysql-test/suite/sys_vars/r/slave_sql_verify_checksum_basic.result mariadb-5.5.30/mysql-test/suite/sys_vars/r/innodb_merge_sort_block_size_basic.result mariadb-5.5.30/mysql-test/suite/sys_vars/r/general_log_file_func.result mariadb-5.5.30/mysql-test/suite/sys_vars/r/thread_pool_size_basic.result mariadb-5.5.30/mysql-test/suite/sys_vars/r/sync_master_info_basic.result ----- [root@sys4u mariadb-5.5.30]# /usr/local/bin/cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DWITH_EXTRA_CHARSETS=all -DMYSQL_DATADIR=/usr/local/mysql/data - DENABLED_LOCAL_INFILE=1 -DWITH_INNOBASE_STORAGE_ENGINE=1 -DMYSQL_UNIX_ADDR=/usr/local/mysql/mysql.socket ----- -- Looking for access - found -- Looking for aio_read -- Looking for aio_read - found -- Looking for alarm -- Looking for alarm - found -- Looking for backtrace -- Looking for backtrace - found -- Looking for backtrace_symbols -- Looking for backtrace_symbols - found -- Looking for backtrace_symbols_fd -----
- 19. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 19 MariaDB : Installation Step [root@sys4u mysql]# chown -R mysql:dba /usr/local/mysql* [root@sys4u mysql]# chown mysql:dba /etc/my.cnf export MYSQL_HOME=/usr/local/mysql export PATH=$PATH:$MYSQL_HOME/bin:. export ADMIN_PWD="root password” alias ll="ls -al --color=auto" alias mydba="mysql -uroot -p$ADMIN_PWD" alias mymaster="mysql -uroot -p$ADMIN_PWD -e'show master status;'" alias myslave="mysql -uroot -p$ADMIN_PWD -e'show slave statusG'" alias mh="cd $MYSQL_HOME" alias md="cd /home/data/mariadb-data" alias mt="cd /home/data/mariadb-tmp“ ----- [root@sys4u mysql]# cd /usr/local/mysql/ [root@sys4u mysql]# ./scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ ----- WARNING: The host 'sys4u.co.kr' could not be looked up with resolveip. This probably means that your libc libraries are not 100 % compatible with this binary MariaDB version. The MariaDB daemon, mysqld, should work normally with the exception that host name resolving will not work. This means that you should use IP addresses instead of hostnames when specifying MariaDB privileges ! Installing MariaDB/MySQL system tables in '/home/data/mariadb-data' ... OK -----
- 20. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 20 MariaDB : Installation Step [root@sys4u ~]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld cp: overwrite `/etc/init.d/mysqld'? y # /etc/init.d/mysqld 46 basedir=/home/mariadb 47 datadir=/home/data/mariadb-data [root@sys4u ~]# /usr/local/mysql/bin/mysql Welcome to the MariaDB monitor. Commands end with ; or g. Your MariaDB connection id is 2 Server version: 5.5.30-MariaDB-log Source distribution Copyright (c) 2000, 2013, Oracle, Monty Program Ab and others. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. MariaDB [(none)]>
- 21. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 21 MariaDB : Installation Step MariaDB [(none)]> use mysql Database changed MariaDB [mysql]> create database orademo; Query OK, 1 row affected (0.00 sec) MariaDB [mysql]> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | orademo | | performance_schema | | test | +--------------------+ 5 rows in set (0.00 sec) MariaDB [mysql]> grant all privileges on *.* to 'root'@'%' identified by ‘’ecsses; Query OK, 0 rows affected (0.03 sec) MariaDB [mysql]> select host, user, password from user; +-------------+------+-------------------------------------------+ | host | user | password | +-------------+------+-------------------------------------------+ | localhost | root | | | sys4u.co.kr | root | | | 127.0.0.1 | root | | | ::1 | root | | | localhost | | | | sys4u.co.kr | | | | % | root | *077D2C382FBC8EF28EFF2EF07C9BAD1595F0AB6D | +-------------+------+-------------------------------------------+ 7 rows in set (0.00 sec) MariaDB [mysql]> flush privileges; Query OK, 0 rows affected (0.00 sec)
- 22. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 22 MariaDB : MariaDB Server Startup & Shutdown [root@sys4u ~]# /etc/init.d/mysqld start Starting MySQL.... [ OK ] [root@sys4u ~]# /usr/local/mysql/bin/mysql -uroot -p Enter password: Welcome to the MariaDB monitor. Commands end with ; or g. Your MariaDB connection id is 3 Server version: 5.5.37-tokudb-7.1.6-MariaDB-log MariaDB Server Copyright (c) 2000, 2013, Oracle, Monty Program Ab and others. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. MariaDB [(none)]> use mysql Database changed MariaDB [mysql]> exit Bye [root@sys4u ~]# /etc/init.d/mysqld stop Shutting down MySQL.. [ OK ]
- 23. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 23 MariaDB : Create DB & User MariaDB [(none)]> create database firstdb; (or create database firstdb default charcter set utf8mb4;) Query OK, 1 row affected (0.03 sec) MariaDB [(none)]> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | firstdb | | mysql | | orademo | | performance_schema | | test | +--------------------+ 6 rows in set (0.10 sec)
- 24. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 24 MariaDB : Create DB & User MariaDB [(none)]> create database firstdb; (or create database firstdb default charcter set utf8mb4;) Query OK, 1 row affected (0.03 sec) MariaDB [(none)]> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | firstdb | | mysql | | orademo | | performance_schema | | test | +--------------------+ 6 rows in set (0.10 sec)
- 25. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 25 MariaDB : Create Table MariaDB [firstdb]> create table tab_test ( -> tid bigint not null auto_increment, -> tname varchar(100) not null, -> tmeno text not null, -> primary key(tid), -> index ix_tname_tid (tname, tid) -> ) ENGINE=InnoDB; MariaDB [firstdb]> show create table tab_test; ------------+ | Table | Create Table | +----------+----------------------------------------------------------------------------------------------------- | tab_test | CREATE TABLE `tab_test` ( `tid` bigint(20) NOT NULL AUTO_INCREMENT, `tname` varchar(100) NOT NULL, `tmeno` text NOT NULL, PRIMARY KEY (`tid`), KEY `ix_tname_tid` (`tname`,`tid`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 | +----------+----------------------------------------------------------------------------------------------------- ------------+ 1 row in set (0.11 sec) MariaDB [firstdb]> desc tab_test; +-------+--------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +-------+--------------+------+-----+---------+----------------+ | tid | bigint(20) | NO | PRI | NULL | auto_increment | | tname | varchar(100) | NO | MUL | NULL | | | tmeno | text | NO | | NULL | | +-------+--------------+------+-----+---------+----------------+ 3 rows in set (0.00 sec)
- 26. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 26 MariaDB : Modify table (ONLINE/OFFLINE) MariaDB [firstdb]> create table t1 (fd1 int, fd2 enum('red', 'green')); Query OK, 0 rows affected (0.00 sec) MariaDB [firstdb]> alter online table t1 modify fd2 enum('red', 'green', 'blue'); Query OK, 0 rows affected (0.01 sec) Records: 0 Duplicates: 0 Warnings: 0 MariaDB [firstdb]> alter online table t1 add fd3 int; ERROR 1915 (HY000): Can't execute the given 'ALTER' command as online Don't Need : Data Copy to Temp Table – Modify Table Names – Modify Column Names – Modify Number Type Column Length – Modify Table Comment – ENUM Type item add Online Modify Schema : MariaDB 10.0, MySQL 5.6 Over
- 27. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 27 MariaDB : Modify table (ONLINE/OFFLINE) MariaDB [firstdb]> alter table tab_test add created datetime not null; Query OK, 0 rows affected (0.30 sec) Records: 0 Duplicates: 0 Warnings: 0 MariaDB [firstdb]> alter table tab_test add index ix_created (created); Query OK, 0 rows affected (0.18 sec) Records: 0 Duplicates: 0 Warnings: 0 MariaDB [firstdb]> desc tab_test; +---------+--------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +---------+--------------+------+-----+---------+----------------+ | tid | bigint(20) | NO | PRI | NULL | auto_increment | | tname | varchar(100) | NO | MUL | NULL | | | tmeno | text | NO | | NULL | | | created | datetime | NO | MUL | NULL | | +---------+--------------+------+-----+---------+----------------+ 4 rows in set (0.00 sec)
- 28. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 28 MariaDB : DML (INSERT) MariaDB [firstdb]> create table tab_test ( -> fd1 int not null, -> fd2 varchar(50), -> primary key(fd1)) engine=innodb; Query OK, 0 rows affected (0.09 sec) MariaDB [firstdb]> insert into tab_test (fd1, fd2) values (1,'Matt'); Query OK, 1 row affected (0.06 sec) MariaDB [firstdb]> insert into tab_test values (2, 'Toto'); Query OK, 1 row affected (0.00 sec) MariaDB [firstdb]> insert into tab_test(fd1, fd2) -> values (3,'Lee') on duplicate key update fd2='Lee'; Query OK, 1 row affected (0.03 sec) MariaDB [firstdb]> insert into tab_test(fd1, fd2) -> values (3, 'SeongUck') on duplicate key update fd2='SeongUck'; Query OK, 2 rows affected (0.04 sec) MariaDB [firstdb]> select * from tab_test; +-----+----------+ | fd1 | fd2 | +-----+----------+ | 1 | Matt | | 2 | Toto | | 3 | SeongUck | +-----+----------+ 3 rows in set (0.00 sec) Option) ON DUPLICATE KEY UPDATE
- 29. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 29 MariaDB : DML (SELECT) MariaDB [firstdb]> select * from tab_test; +-----+----------+ | fd1 | fd2 | +-----+----------+ | 1 | Matt | | 2 | Toto | | 3 | SeongUck | +-----+----------+ 3 rows in set (0.00 sec) MariaDB [firstdb]> select * from tab_testG; *************************** 1. row *************************** fd1: 1 fd2: Matt *************************** 2. row *************************** fd1: 2 fd2: Toto *************************** 3. row *************************** fd1: 3 fd2: SeongUck 3 rows in set (0.00 sec)
- 30. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 30 MariaDB : DML (UPDATE) MariaDB [firstdb]> update tab_test set fd2='Brandon' where fd1=1; Query OK, 1 row affected (0.00 sec) Rows matched: 1 Changed: 1 Warnings: 0 MariaDB [firstdb]> select * from tab_test where fd1=1; +-----+---------+ | fd1 | fd2 | +-----+---------+ | 1 | Brandon | +-----+---------+ 1 row in set (0.06 sec) MariaDB [firstdb]> select * from tab_test where fd1=1; +-----+---------+ | fd1 | fd2 | +-----+---------+ | 1 | Brandon | +-----+---------+ 1 row in set (0.06 sec) MariaDB [firstdb]> update tab_test set fd2='Brandon'; Query OK, 2 rows affected (0.03 sec) Rows matched: 3 Changed: 2 Warnings: 0 MariaDB [firstdb]> select * from tab_test; +-----+---------+ | fd1 | fd2 | +-----+---------+ | 1 | Brandon | | 2 | Brandon | | 3 | Brandon | +-----+---------+ 3 rows in set (0.01 sec) caution
- 31. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 31 MariaDB : DML (REPLACE) MariaDB [firstdb]> replace tab_test set fd1=1, fd2='Matt'; Query OK, 2 rows affected (0.00 sec) MariaDB [firstdb]> select * from tab_test where fd1=1; +-----+------+ | fd1 | fd2 | +-----+------+ | 1 | Matt | +-----+------+ 1 row in set (0.00 sec) REPLACE <-> UPDATE – If, PK or Unique key : Recode Delete & Insert – System Over head – Recommended : INSERT INTO … ON DUPLICATE KEY UP-DATE
- 32. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 32 MariaDB : DML (DELETE) MariaDB [firstdb]> delete from tab_test where fd1=1; Query OK, 0 rows affected (0.00 sec) MariaDB [firstdb]> select * from tab_test; +-----+---------+ | fd1 | fd2 | +-----+---------+ | 2 | Brandon | | 3 | Brandon | +-----+---------+ 2 rows in set (0.00 sec) MariaDB : AUTO Commit
- 33. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 33 Reference Presentation : Ryusuke Kajiyama (MySQL Sales Consulting Manager, JAPAC) – State of the Dolphin – MySQL for Oracle DB Site : MariaDB Knowledge Base Book : “Real MariaDB”
- 34. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 34 Q & A
- 35. Copyright(c)2014 by ora-sysdba. All Page content is property of dbjongjin.lee Blog : http://ora-sysdba.tistory.com/ 35