Herbert Yang » Database http://www.herbertyang.com Wed, 13 Jul 2011 07:02:51 +0000 en hourly 1 http://wordpress.org/?v=3.0.5 Ubuntu安装MySQL http://www.herbertyang.com/2010/01/07/ubuntu-install-mysql.html http://www.herbertyang.com/2010/01/07/ubuntu-install-mysql.html#comments Thu, 07 Jan 2010 06:02:23 +0000 Herbert http://www.herbertyang.com/?p=490 好久没写日志了，前段时间，域名没有备案，封掉了。

Ubuntu安装MySQL很方便，直接运行

sudo apt-get install mysql-server

就可以了。

但如果要MySQL能够外部访问的话，要做下修改。
登录MySQL

mysql -u root -p

授予需要外部访问的IP或者用户的权限

GRANT ALL PRIVILEGES ON *.* TO shishuo@'%' IDENTIFIED BY "shishuopassword";

其中 *.* 表示 数据库.表，你可以写为 shishuo.*
如：

GRANT ALL PRIVILEGES ON shishuodatabase.* TO shishuo@'%' IDENTIFIED BY "shishuopassword";

这条语句的意思就是，shishuo这个用户可以在任何IP下，用 shishuopassword 密码，访问shishuodatabase数据库，并具有对shishuodatabase的所有权限。

然后

vi /etc/mysql/my.cnf

修改
bind-address = 127.0.0.1
为
#bind-address = 127.0.0.1

重启

/etc/init.d/mysql restart

这样外部也能访问了。

]]> http://www.herbertyang.com/2010/01/07/ubuntu-install-mysql.html/feed 0 key/value数据库 http://www.herbertyang.com/2009/11/12/key-value-database.html http://www.herbertyang.com/2009/11/12/key-value-database.html#comments Thu, 12 Nov 2009 08:24:33 +0000 Herbert http://www.herbertyang.com/?p=416 QDBM：
NDBM : New DBM written by BSD
SDBM : Substitute DBM written by Ozan S. Yigit
GDBM : GNU Database Manager written by Philip A. Nelson et al
TDB : Trivial Database written by Andrew Tridgell et al
TinyCDB : Constant Database written by Michael Tokarev
Berkeley DB : Berkeley DB written by Sleepycat Software

]]> http://www.herbertyang.com/2009/11/12/key-value-database.html/feed 0 Berkeley DB http://www.herbertyang.com/2009/11/07/berkeley-db.html http://www.herbertyang.com/2009/11/07/berkeley-db.html#comments Sat, 07 Nov 2009 14:31:06 +0000 Herbert http://www.herbertyang.com/2009/11/07/berkeley-db.html Berkeley DB的资源链接：
　　官方主页：http://www.oracle.com/database/berkeley-db/db/index.html
　　产品下载：http://www.oracle.com/technology/software/products/berkeley-db/index.html
　　官方开发者文档中心：http://www.oracle.com/technology/documentation/berkeley-db/db/index.html
　　产品技术信息： http://www.oracle.com/technology/products/berkeley-db/pdf/berkeley-db-family-datasheet.pdf
　　http://www.oracle.com/database/docs/berkeley-db-datasheet.pdf
　　http://www.oracle.com/database/docs/Berkeley-DB-v-Relational.pdf

如果下载不了，可用国内的下载地址（http://download.linuxeden.com/DownSoft/?softid=1627）

]]> http://www.herbertyang.com/2009/11/07/berkeley-db.html/feed 0 SQL中Select语法 http://www.herbertyang.com/2009/09/30/sql-syntax-in-the-select.html http://www.herbertyang.com/2009/09/30/sql-syntax-in-the-select.html#comments Wed, 30 Sep 2009 06:24:54 +0000 Herbert http://blog.shishuo.com/2009/09/30/sql-syntax-in-the-select.html 以下是摘自MySQL官方关于Select的语法，不过看上去有些复杂。 SELECT [ALL | DISTINCT | DISTINCTROW ] [HIGH_PRIORITY] [STRAIGHT_JOIN] [SQL_SMALL_RESULT] [SQL_BIG_RESULT] [SQL_BUFFER_RESULT] [SQL_CACHE | SQL_NO_CACHE] [SQL_CALC_FOUND_ROWS] select_expr [, select_expr ...] [FROM table_references [WHERE where_condition] [GROUP BY {col_name | expr | position} [ASC | DESC], ... [WITH ROLLUP]] [HAVING where_condition] [ORDER BY {col_name | expr | position} [ASC | DESC], ...] [LIMIT {[offset,] row_count | row_count OFFSET offset}] [PROCEDURE procedure_name(argument_list)] [INTO OUTFILE 'file_name' export_options | INTO DUMPFILE 'file_name' | INTO var_name [, var_name]] [FOR UPDATE | LOCK IN SHARE MODE]] 我做了些简化，如下 
SELECT [DISTINCT] select_expr [, select_expr ...]
FROM table_references
WHERE where_condition
[GROUP BY {col_name | expr | position} [ASC | DESC]]
[HAVING where_condition]
[ORDER BY  {col_name | expr | position} [ASC | DESC]]
[LIMIT {[offset,] row_count | row_count OFFSET offset}]
]]> http://www.herbertyang.com/2009/09/30/sql-syntax-in-the-select.html/feed 0 MySQL Install http://www.herbertyang.com/2009/08/31/mysql-install.html http://www.herbertyang.com/2009/08/31/mysql-install.html#comments Mon, 31 Aug 2009 05:37:10 +0000 Herbert http://blog.shishuo.com/?p=353 shell> groupadd mysql
shell> useradd -g mysql mysql
shell> cd /usr/local
shell> gunzip < /path/to/mysql-VERSION-OS.tar.gz | tar xvf -
shell> ln -s full-path-to-mysql-VERSION-OS mysql
shell> cd mysql
shell> chown -R mysql .
shell> chgrp -R mysql .
shell> scripts/mysql_install_db –user=mysql
shell> chown -R root .
shell> chown -R mysql data
shell> bin/mysqld_safe –user=mysql &

]]> http://www.herbertyang.com/2009/08/31/mysql-install.html/feed 0 [译]MySQL的Set数据类型 http://www.herbertyang.com/2009/08/25/mysql-set-datatype.html http://www.herbertyang.com/2009/08/25/mysql-set-datatype.html#comments Tue, 25 Aug 2009 10:30:47 +0000 Herbert http://blog.shishuo.com/?p=346 原文地址：http://dev.mysql.com/tech-resources/articles/mysql-set-datatype.html

最近经常被使用的一个MySQL数据类型不得不算SET数据类型了，SET数据类型是一个String类型，但是由于其涉及复杂的增加，所以常常作为一个组合类型被提及到。在创建表的时候，一个SET类型可以存储指定的字符串的预定义列表中的任何数量的字符串。从SET数据类型与ENUM数据类型的预定义字符集工作方式来说，他们是相似的，但是ENUM数据类型限制你的预定义字符串集合中的一个成员，SET数据类型容许你存储多个预定义字符串，没有任何一个字符串，或者所有的字符串，都可以。

在MySQL的表里面，SET数据类型是作为一个Integer值被存储的。根据可利用元素的数量，SET数据类型将占用了0到8个字节。

MySQL的SET数据类型的要求

元素的个数 字节数
1 – 8 1
9 – 16 2
17 – 24 3
25 – 32 4
33 – 64 8

The SET elements are stored in the MySQL table as a bitmap: each element is represented by a single bit. To demonstrate this, lets look at the following sample table, which will be the basis for the rest of this tutorial. (NOTE: In the examples that follow, there are never whitespaces between elements and their comma seperators. Also note that only during the definition of a set are the elements individually wrapped in single quotes, otherwise the set as a whole gets only one set of quotes. Please do likewise.)

在MySQL的表里面，SET元素当作一个bitmap来存储的：每个元素都通过一个单一比特来代表。为了说明这个，让我们来看看下面的表。

]]> http://www.herbertyang.com/2009/08/25/mysql-set-datatype.html/feed 0 单独增加主键和索引的SQL http://www.herbertyang.com/2009/08/25/single-increase-in-the-primary-key-and-indexes-in-sql.html http://www.herbertyang.com/2009/08/25/single-increase-in-the-primary-key-and-indexes-in-sql.html#comments Tue, 25 Aug 2009 08:31:36 +0000 Herbert http://blog.shishuo.com/?p=343 ALTER TABLE user_relation_0 ADD INDEX `idx_user_relation` USING BTREE(`user_uuid_a`, `arefriends`); ALTER TABLE user_relation_0 ADD CONSTRAINT  `pk_user_relation` PRIMARY KEY(`user_relation_uuid`); ]]> http://www.herbertyang.com/2009/08/25/single-increase-in-the-primary-key-and-indexes-in-sql.html/feed 0 MySQL的几条管理命令 http://www.herbertyang.com/2009/07/21/mysql-management-of-several-orders.html http://www.herbertyang.com/2009/07/21/mysql-management-of-several-orders.html#comments Tue, 21 Jul 2009 11:34:10 +0000 Herbert http://blog.shishuo.com/?p=307 CHECK TABLE `表名`     检查表
ANALYZE TABLE `表名` 分析表
REPAIR TABLE `表名`   修复表
OPTIMIZE TABLE `表名` 优化表
FLUSH TABLE `表名`     强制更新表
SHOW INDEX FROM `tbl_name`;
]]> http://www.herbertyang.com/2009/07/21/mysql-management-of-several-orders.html/feed 0 抛弃在Hibernate的二级缓存使用Memcached http://www.herbertyang.com/2009/07/19/discard-the-secondary-cache-in-hibernate-using-memcached.html http://www.herbertyang.com/2009/07/19/discard-the-secondary-cache-in-hibernate-using-memcached.html#comments Sun, 19 Jul 2009 15:54:44 +0000 Herbert http://blog.shishuo.com/?p=305 Memcached就像一个调皮的精灵，在你困难的时候，他会跳出来帮你一把，那绝对是雪中送。

不过，也如精灵的天性一样，喜欢冲破任何约束，感觉都不太可靠。

在Hibernate的二级缓存加上Memcached，似乎是把这个精灵捆住了，也正因为如此，Memcached不再是Memcached了。

扔掉这种想法吧，如果你使用了Memcached，就要做好他上窜下窜的准备，这就是他的魅力。

]]> http://www.herbertyang.com/2009/07/19/discard-the-secondary-cache-in-hibernate-using-memcached.html/feed 0 项目开发部署 http://www.herbertyang.com/2009/07/18/project-development-and-deployment-of.html http://www.herbertyang.com/2009/07/18/project-development-and-deployment-of.html#comments Sat, 18 Jul 2009 04:05:51 +0000 Herbert http://blog.shishuo.com/?p=298 1、下载开发工具
1> Eclipse
下载开发工具eclipse-jee-ganymede（
http://www.eclipse.org/downloads/download.php?file=/technology/epp/downloads/release/ganymede/SR2/eclipse-jee-ganymede-SR2-win32.zip）解压到 D:\Program Files\eclipse-ganymede

http://download.actuatechina.com/eclipse/technology/epp/downloads/release/ganymede/SR2/eclipse-jee-ganymede-SR2-win32.zip

选择workspace目录为D:\workspace

2> Resin

http://www.caucho.com/download/

http://www.caucho.com/download/resin-3.1.8.zip

3> nginx

http://nginx.net/

http://sysoev.ru/nginx/nginx-0.7.61.zip

4> mysql
Windows MSI Installer (x86)

http://www.mysql.com/

http://dev.mysql.com/downloads/mysql/5.0.html#win32

http://ftp.jaist.ac.jp/pub/mysql/Downloads/MySQL-5.0/mysql-5.0.83-win32.zip

http://ftp.jaist.ac.jp/pub/mysql/Downloads/MySQLGUITools/mysql-gui-tools-5.0-r17-win32.msi

5>memcached for win32

http://www.splinedancer.com/memcached-win32/

2、Eclipse插件下载地址
1> Hibernate Tools
#http://download.jboss.org/jbosstools/updates/development

http://download.jboss.org/jbosstools/updates/stable/

选择安装
#Tools Development Release和Hibernate Tools
FreeMarker IDE
Hibernate Tools

2> Spring IDE

http://springide.org/updatesite

3> SVN

http://subclipse.tigris.org/update_1.6.x

4> Javascript

http://download.macromedia.com/pub/labs/jseclipse/autoinstall/

以下是项目辅助的插件
5> checkstyle

http://eclipse-cs.sourceforge.net/update

6> findbug

http://findbugs.cs.umd.edu/eclipse

memcached for Win32

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