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查看当前数据库支持的引擎
show engines +--------------------+---------+----------------------------------------------------------------+--------------+------+------------+ | Engine | Support | Comment | Transactions | XA | Savepoints | +--------------------+---------+----------------------------------------------------------------+--------------+------+------------+ | InnoDB | DEFAULT | Supports transactions, row-level locking, and foreign keys | YES | YES | YES | | MRG_MYISAM | YES | Collection of identical MyISAM tables | NO | NO | NO | | MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO | NO | NO | | BLACKHOLE | YES | /dev/null storage engine (anything you write to it disappears) | NO | NO | NO | | MyISAM | YES | MyISAM storage engine | NO | NO | NO | | CSV | YES | CSV storage engine | NO | NO | NO | | ARCHIVE | YES | Archive storage engine | NO | NO | NO | | PERFORMANCE_SCHEMA | YES | Performance Schema | NO | NO | NO | | FEDERATED | NO | Federated MySQL storage engine | NULL | NULL | NULL | +--------------------+---------+----------------------------------------------------------------+--------------+------+------------+ 9 rows in set (0.00 sec)
或者
show engines \G mysql> show engines \G *************************** 1. row *************************** Engine: InnoDB Support: DEFAULT Comment: Supports transactions, row-level locking, and foreign keys Transactions: YES XA: YES Savepoints: YES *************************** 2. row *************************** Engine: MRG_MYISAM Support: YES Comment: Collection of identical MyISAM tables Transactions: NO XA: NO Savepoints: NO *************************** 3. row *************************** Engine: MEMORY Support: YES Comment: Hash based, stored in memory, useful for temporary tables Transactions: NO XA: NO Savepoints: NO *************************** 4. row *************************** Engine: BLACKHOLE Support: YES Comment: /dev/null storage engine (anything you write to it disappears) Transactions: NO XA: NO Savepoints: NO *************************** 5. row *************************** Engine: MyISAM Support: YES Comment: MyISAM storage engine Transactions: NO XA: NO Savepoints: NO *************************** 6. row *************************** Engine: CSV Support: YES Comment: CSV storage engine Transactions: NO XA: NO Savepoints: NO *************************** 7. row *************************** Engine: ARCHIVE Support: YES Comment: Archive storage engine Transactions: NO XA: NO Savepoints: NO *************************** 8. row *************************** Engine: PERFORMANCE_SCHEMA Support: YES Comment: Performance Schema Transactions: NO XA: NO Savepoints: NO *************************** 9. row *************************** Engine: FEDERATED Support: NO Comment: Federated MySQL storage engine Transactions: NULL XA: NULL Savepoints: NULL 9 rows in set (0.00 sec)
Engine 引擎的名称
Support 是否支付YES表示支持,NO表示不支持
Comment 评价或者备注 Defalut表示,默认支持的引擎
Transactions 是否支持事务,YES表示支持,NO表示不支持
XA 所有支持的分布式是否符合XA规范,YES表示支持,NO表示不支持
Savepoints 是否支持事务处理中的保存点,YES表示支持,NO表示不支持
或者
show variables like ‘have%'
mysql> show variables like 'have%'; +------------------------+----------+ | Variable_name | Value | +------------------------+----------+ | have_compress | YES | | have_crypt | NO | | have_dynamic_loading | YES | | have_geometry | YES | | have_openssl | DISABLED | | have_profiling | YES | | have_query_cache | YES | | have_rtree_keys | YES | | have_ssl | DISABLED | | have_statement_timeout | YES | | have_symlink | YES | +------------------------+----------+ 11 rows in set, 1 warning (0.00 sec)
Variable_name 引擎名称
value 是否支持YES支持,NO不支持,DISABLED表示支持但未启用
查看默认引擎
show variables like ‘%storage_engine%'
mysql> show variables like '%storage_engine%'; +----------------------------------+--------+ | Variable_name | Value | +----------------------------------+--------+ | default_storage_engine | InnoDB | | default_tmp_storage_engine | InnoDB | | disabled_storage_engines | | | internal_tmp_disk_storage_engine | InnoDB | +----------------------------------+--------+ 4 rows in set, 1 warning (0.00 sec)
InnoDB 为默认引擎
修改默认引擎
my.ini文件
[mysqld] # The next three options are mutually exclusive to SERVER_PORT below. # skip-networking # enable-named-pipe # shared-memory # shared-memory-base-name=MYSQL # The Pipe the MySQL Server will use # socket=MYSQL # The TCP/IP Port the MySQL Server will listen on 默认端口号 port=3306 # Path to installation directory. All paths are usually resolved relative to this. 服务器的默认安装目录 # basedir="C:/Program Files/MySQL/MySQL Server 5.7/" # Path to the database root 数据库数据文件的目录 datadir=C:/ProgramData/MySQL/MySQL Server 5.7\Data # The default character set that will be used when a new schema or table is # created and no character set is defined 修改服务器默认字符 character-set-server=utf8 # The default storage engine that will be used when create new tables when # 这里修改默认引擎 default-storage-engine=INNODB
修改后重启Mysql服务
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稳了!魔兽国服回归的3条重磅消息!官宣时间再确认!
昨天有一位朋友在大神群里分享,自己亚服账号被封号之后居然弹出了国服的封号信息对话框。
这里面让他访问的是一个国服的战网网址,com.cn和后面的zh都非常明白地表明这就是国服战网。
而他在复制这个网址并且进行登录之后,确实是网易的网址,也就是我们熟悉的停服之后国服发布的暴雪游戏产品运营到期开放退款的说明。这是一件比较奇怪的事情,因为以前都没有出现这样的情况,现在突然提示跳转到国服战网的网址,是不是说明了简体中文客户端已经开始进行更新了呢?
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