外掛程式儲存引擎是MySQL資料庫最重要的特徵之一，使用者可以根據應用程式的需要尋找如何儲存和索引資料、是否使用事務等。 MySQL預設支援多種儲存引擎，以適用於不同領域的資料庫應用需求，使用者可以透過選擇選擇不同的儲存引擎提供應用程式的效率，提供靈活的儲存
查看目前資料庫支援的引擎
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
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 引擎的名稱
Support 是否支付YES表示支持，NO表示不支持
Comment 評價或備註Defalut表示，預設支援的引擎
Transactions 是否支持事務，YES表示支持，NO表示不支持
XA 所有支持的分佈式是否符合XA規範，YES表示支持，NO表示不支持
Savepoints 是否支持事務處理中的保存點，YES表示支持， NO表示不支援
或
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 引擎名稱
value是否支援YES支持，NO不支援,DISABLED表示支援但未啟用
查看預設引擎
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 為預設引擎
修改預設引擎
my.ini檔案
[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
修改後重新啟動Mysql服務
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