- 查看当前默认存储引擎
# 1：default_storage_engine 表示永久表（permanent tables）的默认存储引擎。
# 2：default_tmp_storage_engine 表示临时表的默认存储引擎。
root@127.0.0.1 : (none)【12:01:28】6 SQL-> show variables like '%storage_engine%';
+---------------------------------+-----------+
| Variable_name | Value |
+---------------------------------+-----------+
| default_storage_engine | InnoDB |
| default_tmp_storage_engine | InnoDB |
| disabled_storage_engines | |
| internal_tmp_mem_storage_engine | TempTable |
+---------------------------------+-----------+
#查看表所用的存储引擎
root@127.0.0.1 : (none)【12:04:03】8 SQL->SELECT TABLE_SCHEMA,TABLE_NAME,TABLE_TYPE,ENGINE FROM information_schema.TABLES where TABLE_SCHEMA='testdb';
+--------------+-----------------+------------+--------+
| TABLE_SCHEMA | TABLE_NAME | TABLE_TYPE | ENGINE |
+--------------+-----------------+------------+--------+
| testdb | dept | BASE TABLE | InnoDB |
| testdb | emp | BASE TABLE | InnoDB |
| testdb | emp1 | BASE TABLE | InnoDB |
| testdb | mp_user | BASE TABLE | InnoDB |
| testdb | my_account | BASE TABLE | InnoDB |
| testdb | my_account_tran | BASE TABLE | InnoDB |
| testdb | tb_log | BASE TABLE | InnoDB |
+--------------+-----------------+------------+--------+
#修改表的春初引擎(如下改成 InnoDB)
alter table table_name engine=innodb;
- 当前数据库支持的存储引擎
root@127.0.0.1 : (none)【12:04:42】9 SQL->show engines \G
*************************** 1. row ***************************
Engine: FEDERATED
Support: NO
Comment: Federated MySQL storage engine
Transactions: NULL
XA: NULL
Savepoints: NULL
*************************** 2. row ***************************
Engine: MEMORY
Support: YES
Comment: Hash based, stored in memory, useful for temporary tables
Transactions: NO
XA: NO
Savepoints: NO
*************************** 3. row ***************************
Engine: InnoDB
Support: DEFAULT
Comment: Supports transactions, row-level locking, and foreign keys
Transactions: YES
XA: YES
Savepoints: YES
*************************** 4. row ***************************
Engine: PERFORMANCE_SCHEMA
Support: YES
Comment: Performance Schema
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: MRG_MYISAM
Support: YES
Comment: Collection of identical MyISAM tables
Transactions: NO
XA: NO
Savepoints: NO
*************************** 7. row ***************************
Engine: BLACKHOLE
Support: YES
Comment: /dev/null storage engine (anything you write to it disappears)
Transactions: NO
XA: NO
Savepoints: NO
*************************** 8. row ***************************
Engine: CSV
Support: YES
Comment: CSV storage engine
Transactions: NO
XA: NO
Savepoints: NO
*************************** 9. row ***************************
Engine: ARCHIVE
Support: YES
Comment: Archive storage engine
Transactions: NO
XA: NO
Savepoints: NO
