|FEDERATED|NO|Federated MySQL storage engine|NULL|NULL|NULL|
|MRG\_MYISAM|YES|Collection of identical MyISAM tables|NO|NO|NO|
|MyISAM|YES|MyISAM storage engine|NO|NO|NO|
|BLACKHOLE|YES|/dev/null storage engine 0 码力 |
27 页 |
2.10 MB
| 2 年前 3
administer multiple servers
• manage MySQL users and privileges
• check referential integrity in MyISAM tables
• using Query-by-example (QBE), create complex queries automatically connecting required Forcing this variable to 0 with –lower-case-table-names=0 on a case-insensitive filesystem and access MyISAM tablenames using different lettercases, index corruption may result.
Next, save the file and restart ''',
description varchar(10) NOT NULL default ''',
PRIMARY KEY (country_code)
) TYPE=MyISAM;
INSERT INTO REL_countries VALUES ('C', 'Canada');
CREATE TABLE REL_persons (
id
0 码力 |
181 页 |
801.32 KB
| 2 年前 3
administer multiple servers
• manage MySQL users and privileges
• check referential integrity in MyISAM tables
• using Query-by-example (QBE), create complex queries automatically connecting required Forcing this variable to 0 with –lower-case-table-names=0 on a case-insensitive filesystem and access MyISAM tablenames using different lettercases, index corruption may result.
Next, save the file and restart ''
description varchar(10) NOT NULL default ''
PRIMARY KEY (country_code)
) TYPE=MyISAM;
INSERT INTO REL_countries VALUES ('C', 'Canada');
CREATE TABLE REL_persons (
id
0 码力 |
217 页 |
409.13 KB
| 2 年前 3
servers
• add, edit, and remove MySQL user accounts and privileges
• check referential integrity in MyISAM tables
• using Query-by-example (QBE), create complex queries automatically connecting required Forcing this variable to 0 with –lower-case-table-names=0 on a case-insensitive filesystem and access MyISAM tablenames using different lettercases, index corruption may result.
Next, save the file and restart ''
description varchar(10) NOT NULL default ''
PRIMARY KEY (country_code)
) ENGINE=MyISAM;
INSERT INTO REL_countries VALUES ('C', 'Canada');
CREATE TABLE REL_persons (
id
0 码力 |
235 页 |
370.30 KB
| 2 年前 3
servers
• add, edit, and remove MySQL user accounts and privileges
• check referential integrity in MyISAM tables
• using Query-by-example (QBE), create complex queries automatically connecting required Forcing this variable to 0 with –lower-case-table-names=0 on a case-insensitive filesystem and access MyISAM tablenames using different lettercases, index corruption may result.
Next, save the file and restart ''',
description varchar(10) NOT NULL default ''',
PRIMARY KEY (country_code)
) ENGINE=MyISAM;
INSERT INTO REL_countries VALUES ('C', 'Canada');
CREATE TABLE REL_persons (
id
0 码力 |
196 页 |
828.01 KB
| 2 年前 3
servers
• add, edit, and remove MySQL user accounts and privileges
• check referential integrity in MyISAM tables
• using Query-by-example (QBE), create complex queries automatically connecting required Forcing this variable to 0 with –lower-case-table-names=0 on a case-insensitive filesystem and access MyISAM tablenames using different lettercases, index corruption may result.
Next, save the file and restart ''
description varchar(10) NOT NULL default ''
PRIMARY KEY (country_code)
) TYPE=MyISAM;
INSERT INTO REL_countries VALUES ('C', 'Canada');
CREATE TABLE REL_persons (
id
0 码力 |
196 页 |
826.58 KB
| 2 年前 3
servers
• add, edit, and remove MySQL user accounts and privileges
• check referential integrity in MyISAM tables
• using Query-by-example (QBE), create complex queries automatically connecting required Forcing this variable to 0 with –lower-case-table-names=0 on a case-insensitive filesystem and access MyISAM tablenames using different lettercases, index corruption may result.
Next, save the file and restart ''
description varchar(10) NOT NULL default ''
PRIMARY KEY (country_code)
) ENGINE=MyISAM;
INSERT INTO REL_countries VALUES ('C', 'Canada');
CREATE TABLE REL_persons (
id
0 码力 |
235 页 |
370.31 KB
| 2 年前 3
servers
• add, edit, and remove MySQL user accounts and privileges
• check referential integrity in MyISAM tables
• using Query-by-example (QBE), create complex queries automatically connecting required Forcing this variable to 0 with –lower-case-table-names=0 on a case-insensitive filesystem and access MyISAM tablenames using different lettercases, index corruption may result.
Next, save the file and restart ''
description varchar(10) NOT NULL default ''
PRIMARY KEY (country_code)
) ENGINE=MyISAM;
INSERT INTO REL_countries VALUES ('C', 'Canada');
(continues on next page)
(continued
0 码力 |
203 页 |
849.36 KB
| 2 年前 3
servers
• add, edit, and remove MySQL user accounts and privileges
• check referential integrity in MyISAM tables
• using Query-by-example (QBE), create complex queries automatically connecting required Forcing this variable to 0 with –lower-case-table-names=0 on a case-insensitive filesystem and access MyISAM tablenames using different lettercases, index corruption may result.
Next, save the file and restart ''
description varchar(10) NOT NULL default ''
PRIMARY KEY (country_code)
) ENGINE=MyISAM;
INSERT INTO REL_countries VALUES ('C', 'Canada');
(continues on next page)
(continued
0 码力 |
198 页 |
835.53 KB
| 2 年前 3
谈谈MYSQL那点事dbadd4/p7_1.jpg) ## 谈谈 MySQL 数据库那些事 MySQL 基本介绍 MySQL 优化方式 MySQL 技巧分享 Q & A ## MyISAM vs InnoDB ## MyISAM 特点 • 数据存储方式简单，使用 B+ Tree 进行索引 • 使用三个文件定义一个表：.MYI .MYD .frm • 少碎片、支持大文件、能够进行索引压缩 • 二进制层次的文件可以移植 使用相应缓存服务帮助 MySQL 缓解访问压力 ## 服务优化 ## MySQL 配置原则 - 配置合理的 MySQL 服务器，尽量在应用本身达到一个 MySQL 最合理的使用 - 针对 MyISAM 或 InnoDB 不同引擎进行不同定制性配置 ● 针对不同的应用情况进行合理配置 - 针对 my.cnf 进行配置，后面设置是针对内存为 16G 的服务器进行的合理设置 ## 服务优化 ## 服务优化 ## MyISAM 选项 |选项|缺省值|推荐值|说明| |---|---|---|---| |key\_buffer\_size|8M|512M|用来存放索引区块的缓存值，建议128M以上，不要大于内存的30%| |read\_buffer\_size|128K|64M|用来做MyISAM表全表扫描的缓冲大小。为从数据表顺序读取数据的读操作保留的缓存区的长度| |myisam\_sort0 码力 | 38 页 | 2.04 MB | 1 年前3
09 MySQL 杨亮 《PHP语⾔程序设计》[Image](/uploads/documents/5/2/a/5/52a51141b696e1da8874a2ff2103c30a/p6_1.jpg) ## 存储引擎 ## 负责具体的数据存储与查询 |MyISAM|InnoDB| |---|---| |不支持外键|支持外键| |不支持事务|支持事务| |select性能较高|频繁增删改查| |MySQL原生|第三方扩展|
phpMyAdmin Documentation release 4.7.0administer multiple servers • manage MySQL users and privileges • check referential integrity in MyISAM tables • using Query-by-example (QBE), create complex queries automatically connecting required Forcing this variable to 0 with –lower-case-table-names=0 on a case-insensitive filesystem and access MyISAM tablenames using different lettercases, index corruption may result. Next, save the file and restart '' description varchar(10) NOT NULL default '' PRIMARY KEY (country_code) ) TYPE=MyISAM; INSERT INTO REL_countries VALUES ('C', 'Canada'); CREATE TABLE REL_persons ( id0 码力 | 217 页 | 409.13 KB | 2 年前3