mysql学习之旅

1，mysql安装脚本

 #!/bin/bash

 RSYNC='10.39.2.120::wenhui/database/install'

 CMAKE='cmake-2.8.6.tar.gz'

 MYSQL='mysql-5.5.24.tar.gz'

 MYSQL_DIR='/usr/local/mysql55'

 MYSQL_DATADIR='/data1/mysqldata/mysql3306'

 function main(){

     user=`whoami`

     if [ "$user" != "root" ]; then

         echo "please use root to execute this script"

         exit

     fi

     module=$

     module_type=$

     case "$1" in

         cmake)

             install_cmake

             ;;

         mysql)

             install_mysql $module_type

             ;;

         *)

             echo "USAGE: $0 MODULE[cmake|mysql] MODULE_TYPE[full|libmysql|mysqlclient]"

     esac

 }

 #install cmake

 function install_cmake(){

     echo "begin install cmake"; sleep

     echo "get tar from $RSYNC"

     eval "rsync -avzP $RSYNC/$CMAKE ./"

     dir=`echo $CMAKE | perl -pe 's/\Q.tar.gz\E$//g'`

     eval "test -e $dir && rm -rf $dir"

     eval "tar -zxvf $CMAKE"

     echo "cd to $dir"

     eval "cd $dir"

     ./configure

     make && make install

     cd ..

 }

 #install mysql

 function install_mysql(){

     LD_PATH='/etc/ld.so.conf.d/mysql.conf'

     INSTALL_TYPE='full'

     if [ "$1" != "" ]; then

         INSTALL_TYPE=$

     fi

     echo "begin install mysql $INSTALL_TYPE"; sleep

     echo "get tar from $RSYNC"

     eval "rsync -avzP $RSYNC/$MYSQL ./"

     dir=`echo $MYSQL | perl -pe 's/\Q.tar.gz\E$//g'`

     eval "test -d $dir && rm -rf $dir"

     eval "tar -zxvf $MYSQL"

     echo "cd to $dir"

     eval "cd $dir"

     if [ "$INSTALL_TYPE" == "full" ]; then

         eval "useradd mysql -s /sbin/nologin"

         eval "cmake     -DCMAKE_INSTALL_PREFIX=$MYSQL_DIR \

                         -DMYSQL_UNIX_ADDR=/tmp/mysql.sock \

                         -DDEFAULT_CHARSET=utf8 \

                         -DDEFAULT_COLLATION=utf8_general_ci \

                         -DWITH_MYISAM_STORAGE_ENGINE= \

                         -DWITH_INNOBASE_STORAGE_ENGINE= \

                         -DWITH_MEMORY_STORAGE_ENGINE= \

                         -DWITH_READLINE= \

                         -DENABLED_LOCAL_INFILE= \

                         -DMYSQL_DATADIR==$MYSQL_DATADIR \

                         -DMYSQL_USER=mysql \

                         -DMYSQL_TCP_PORT= \

                         -DWITH_PARTITION_STORAGE_ENGINE= \

                         -DEXTRA_CHARSETS=all \

                         -DWITH_EXTRA_CHARSETS=all \

              "

         make && make install

         #copy configure file

         SCRIPT_DIR="$MYSQL_DIR/start"

         test -d $SCRIPT_DIR || mkdir -p $SCRIPT_DIR

         eval "rsync -avzp $RSYNC/my.cnf $SCRIPT_DIR"

         eval "rsync -avzp $RSYNC/init.sh $SCRIPT_DIR"

     elif [ "$INSTALL_TYPE" == "libmysql" ]; then

         eval "cmake     -DCMAKE_INSTALL_PREFIX=$MYSQL_DIR \

                         -DWITHOUT_SERVER=ON

              "

         make && make install

     elif [ "$INSTALL_TYPE" == "mysqlclient" ]; then

         eval "cmake     -DCMAKE_INSTALL_PREFIX=$MYSQL_DIR \

              "

         make mysqlclient libmysql && make install

     fi

     echo "add bin path to /etc/bashrc"

     echo "" >> /etc/bashrc

     echo "#mysql envirment" >> /etc/bashrc

     echo "export PATH=\$PATH:$MYSQL_DIR/bin" >> /etc/bashrc

     echo "add ld path to $LD_PATH"

     echo "$MYSQL_DIR/lib" > $LD_PATH

     ldconfig

 }

 main $ $

主服务：mysql-server mysql mysql-devel

[root@yz6254 ~]# sh /usr/local/mysql55/start/init.sh 3306 #创建启动脚本

* [root@yz6254 ~]# head install.sh
..............
MYSQL_DIR='/usr/local/mysql55' # 默认数据库安装路径
MYSQL_DATADIR='/data0/mysqldata/mysql3306' # 默认数据库存放路径
...............
* [root@yz6254 ~]# sh install.sh mysql libmysql # 安装libmysqlclient，用于perl,python连mysql数据库使用

==== 安装细节 ======

# cmake
tar zxvf cmake-2.8.6.tar.gz
cd cmake-2.8.6
./configure
make && make install

# Mysql
tar zxvf mysql-5.5.24.tar.gz
cd mysql-5.5.24
cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql55 \
-DMYSQL_UNIX_ADDR=/tmp/mysql.sock \
-DDEFAULT_CHARSET=utf8 \
-DDEFAULT_COLLATION=utf8_general_ci \
-DWITH_MYISAM_STORAGE_ENGINE=1 \
-DWITH_INNOBASE_STORAGE_ENGINE=1 \
-DWITH_MEMORY_STORAGE_ENGINE=1 \
-DWITH_READLINE=1 \
-DENABLED_LOCAL_INFILE=1 \
-DMYSQL_DATADIR==/data0/mysqldata/mysql3306 \
-DMYSQL_USER=mysql \
-DMYSQL_TCP_PORT=3306 \
-DWITH_PARTITION_STORAGE_ENGINE=1 \
-DEXTRA_CHARSETS=all \
-DWITH_EXTRA_CHARSETS=all \

make && make install



数据库默认存放路径：/var/lib/mysql

常见操作：
mysql>
mysql> select version();

#支持日常计算
mysql> select 4*4;
+-----+
| 4*4 |
+-----+
| 16 |
+-----+
1 row in set (0.00 sec)

mysql> select 4+4;
+-----+
| 4+4 |
+-----+
| 8 |
+-----+
1 row in set (0.00 sec)

mysql> select current_date;
+--------------+
| current_date |
+--------------+
| 2015-12-06 |
+--------------+
1 row in set (0.00 sec)

mysql> select version(), current_date;
+-----------+--------------+
| version() | current_date |
+-----------+--------------+
| 5.1.73 | 2015-12-06 |
+-----------+--------------+
1 row in set (0.00 sec)

mysql> create database yongsan_test;
Query OK, 1 row affected (0.00 sec)
mysql> drop database yongsan_test;
Query OK, 0 rows affected (0.40 sec)

注：数据库名称默认不能更改

 注：数据库名称默认不能更改

 数据库默认存放路径：/var/lib/mysql

 mysql>

 mysql> create table lc_course(

     -> id int,

     -> course_name varchar(),

     -> course_length int,

     -> teacher varchar(),

     -> category varchar()

     -> );

 mysql> show tables;

 +------------------------+

 | Tables_in_yongsan_test |

 +------------------------+

 | lc_course              |

 +------------------------+

  row in set (0.00 sec)

 mysql> alter table lc_course rename course

     -> ;

 Query OK,  rows affected (0.00 sec)

 mysql> show tables;

 +------------------------+

 | Tables_in_yongsan_test |

 +------------------------+

 | course                 |

 +------------------------+

  row in set (0.00 sec)

 mysql> alter table course add link varchar();

 Query OK,  rows affected (0.02 sec)

 Records:   Duplicates:   Warnings: 

 mysql> desc course

     -> ;

 +---------------+--------------+------+-----+---------+-------+

 | Field         | Type         | Null | Key | Default | Extra |

 +---------------+--------------+------+-----+---------+-------+

 | id            | int()      | YES  |     | NULL    |       |

 | course_name   | varchar() | YES  |     | NULL    |       |

 | course_length | int()      | YES  |     | NULL    |       |

 | teacher       | varchar()  | YES  |     | NULL    |       |

 | category      | varchar() | YES  |     | NULL    |       |

 | link          | varchar() | YES  |     | NULL    |       |

 +---------------+--------------+------+-----+---------+-------+

  rows in set (0.00 sec)

 mysql>

 mysql> alter table course modify teacher varchar();

 Query OK,  rows affected (0.03 sec)

 Records:   Duplicates:   Warnings: 

 mysql> desc course;

 +---------------+--------------+------+-----+---------+-------+

 | Field         | Type         | Null | Key | Default | Extra |

 +---------------+--------------+------+-----+---------+-------+

 | id            | int()      | YES  |     | NULL    |       |

 | course_name   | varchar() | YES  |     | NULL    |       |

 | course_length | int()      | YES  |     | NULL    |       |

 | teacher       | varchar() | YES  |     | NULL    |       |

 | category      | varchar() | YES  |     | NULL    |       |

 | link          | varchar() | YES  |     | NULL    |       |

 +---------------+--------------+------+-----+---------+-------+

  rows in set (0.00 sec)

 mysql> alter table course change column teacher lecturn varchar();

 Query OK,  rows affected (0.02 sec)

 Records:   Duplicates:   Warnings:

 mysql> desc course;

 +---------------+--------------+------+-----+---------+-------+

 | Field         | Type         | Null | Key | Default | Extra |

 +---------------+--------------+------+-----+---------+-------+

 | id            | int()      | YES  |     | NULL    |       |

 | course_name   | varchar() | YES  |     | NULL    |       |

 | course_length | int()      | YES  |     | NULL    |       |

 | lecturn       | varchar() | YES  |     | NULL    |       |

 | category      | varchar() | YES  |     | NULL    |       |

 | link          | varchar() | YES  |     | NULL    |       |

 +---------------+--------------+------+-----+---------+-------+

  rows in set (0.00 sec)

 INSERT INTO course VALUES(,'mysql_linux','','alex','basic','ln');

 UPDATE course set course_name='yongsan_123' WHERE id=

经典介绍：

mysql> create user yongsan identified by '123qwe';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

 mysql> rename user yongsan to yongsan_1;

 ERROR  (HY000): MySQL server has gone away

 No connection. Trying to reconnect...

 Connection id:

 Current database: mysql

 mysql> set password = password('123qwe');

 Query OK,  rows affected (0.00 sec)

 mysql> set password for yongsan_1 = password('123qwe');

 Query OK,  rows affected (0.00 sec)

 mysql> select * from course;

 +------+-------------+---------------+---------+----------+------+

 | id   | course_name | course_length | lecturn | category | link |

 +------+-------------+---------------+---------+----------+------+

 |     | mysql_linux |             | alex    | basic    | ln   |

 |     | yongsan_123 |          NULL | NULL    | fly      | NULL |

 +------+-------------+---------------+---------+----------+------+

  rows in set (0.00 sec)

 mysql>

 mysql>

 mysql>

 mysql> delete from course where id='';

 Query OK,  row affected (0.00 sec)

 mysql> select * from course;

 +------+-------------+---------------+---------+----------+------+

 | id   | course_name | course_length | lecturn | category | link |

 +------+-------------+---------------+---------+----------+------+

 |     | mysql_linux |             | alex    | basic    | ln   |

 +------+-------------+---------------+---------+----------+------+

  row in set (0.00 sec)

 [yongsan@yz3110 ~]$ mysql -uroot -p yongsan_test < yongsan_test.sql

 Enter password: 

 mysql> select * from course;

 +------+-------------+---------------+---------+----------+------+

 | id   | course_name | course_length | lecturn | category | link |

 +------+-------------+---------------+---------+----------+------+

 |     | mysql_linux |             | alex    | basic    | ln   |

 |     | yongsan_123 |          NULL | NULL    | fly      | NULL |

 +------+-------------+---------------+---------+----------+------+

  rows in set (0.00 sec)

 mysql> show character set;

 +----------+-----------------------------+---------------------+--------+

 | Charset  | Description                 | Default collation   | Maxlen |

 +----------+-----------------------------+---------------------+--------+

 | big5     | Big5 Traditional Chinese    | big5_chinese_ci     |       |

 | dec8     | DEC West European           | dec8_swedish_ci     |       |

 | cp850    | DOS West European           | cp850_general_ci    |       |

 | hp8      | HP West European            | hp8_english_ci      |       |

 | koi8r    | KOI8-R Relcom Russian       | koi8r_general_ci    |       |

 | latin1   | cp1252 West European        | latin1_swedish_ci   |       |

 | latin2   | ISO - Central European | latin2_general_ci   |       |

 | swe7     | 7bit Swedish                | swe7_swedish_ci     |       |

 | ascii    | US ASCII                    | ascii_general_ci    |       |

 | ujis     | EUC-JP Japanese             | ujis_japanese_ci    |       |

 | sjis     | Shift-JIS Japanese          | sjis_japanese_ci    |       |

 | hebrew   | ISO - Hebrew           | hebrew_general_ci   |       |

 | tis620   | TIS620 Thai                 | tis620_thai_ci      |       |

 | euckr    | EUC-KR Korean               | euckr_korean_ci     |       |

 | koi8u    | KOI8-U Ukrainian            | koi8u_general_ci    |       |

 | gb2312   | GB2312 Simplified Chinese   | gb2312_chinese_ci   |       |

 | greek    | ISO - Greek            | greek_general_ci    |       |

 | cp1250   | Windows Central European    | cp1250_general_ci   |       |

 | gbk      | GBK Simplified Chinese      | gbk_chinese_ci      |       |

 | latin5   | ISO - Turkish          | latin5_turkish_ci   |       |

 | armscii8 | ARMSCII- Armenian          | armscii8_general_ci |       |

 | utf8     | UTF- Unicode               | utf8_general_ci     |       |

 | ucs2     | UCS- Unicode               | ucs2_general_ci     |       |

 | cp866    | DOS Russian                 | cp866_general_ci    |       |

 | keybcs2  | DOS Kamenicky Czech-Slovak  | keybcs2_general_ci  |       |

 | macce    | Mac Central European        | macce_general_ci    |       |

 | macroman | Mac West European           | macroman_general_ci |       |

 | cp852    | DOS Central European        | cp852_general_ci    |       |

 | latin7   | ISO - Baltic          | latin7_general_ci   |       |

 | cp1251   | Windows Cyrillic            | cp1251_general_ci   |       |

 | cp1256   | Windows Arabic              | cp1256_general_ci   |       |

 | cp1257   | Windows Baltic              | cp1257_general_ci   |       |

 | binary   | Binary pseudo charset       | binary              |       |

 | geostd8  | GEOSTD8 Georgian            | geostd8_general_ci  |       |

 | cp932    | SJIS for Windows Japanese   | cp932_japanese_ci   |       |

 | eucjpms  | UJIS for Windows Japanese   | eucjpms_japanese_ci |       |

 +----------+-----------------------------+---------------------+--------+

  rows in set (0.00 sec)

 查看默认字符编码

 mysql> show variables like 'collation%';

 +----------------------+-------------------+

 | Variable_name        | Value             |

 +----------------------+-------------------+

 | collation_connection | utf8_general_ci   |

 | collation_database   | latin1_swedish_ci |

 | collation_server     | latin1_swedish_ci |

 +----------------------+-------------------+

  rows in set (0.00 sec)

 mysql> show variables like 'character_set%';

 +--------------------------+----------------------------+

 | Variable_name            | Value                      |

 +--------------------------+----------------------------+

 | character_set_client     | utf8                       |

 | character_set_connection | utf8                       |

 | character_set_database   | latin1                     |

 | character_set_filesystem | binary                     |

 | character_set_results    | utf8                       |

 | character_set_server     | latin1                     |

 | character_set_system     | utf8                       |

 | character_sets_dir       | /usr/share/mysql/charsets/ |

 +--------------------------+----------------------------+

  rows in set (0.00 sec)

 mysql> create database lcdb default character set utf8 default collate utf8_general_ci;

 Query OK,  row affected (0.00 sec)

 指定字符编码

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