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  • mysql表引擎修改 枯木

    1、修改建表引擎

    mysql> CREATE TABLE test_2(
        -> name varchar(10),
        -> year int(10))
        -> ENGINE=InnoDB;            -->创建表时指定默认引擎
    Query OK, 0 rows affected (0.10 sec)
    
    mysql> show create table test_2\G
    *************************** 1. row ***************************
           Table: test_2
    Create Table: CREATE TABLE `test_2` (
      `name` varchar(10) DEFAULT NULL,
      `year` int(10) DEFAULT NULL
    ) ENGINE=InnoDB DEFAULT CHARSET=latin1
    1 row in set (0.00 sec)
    
    mysql>
    
    
    mysql> show tables;
    +------------------+
    | Tables_in_excise |
    +------------------+
    | test1            |
    | test_1           |
    +------------------+
    2 rows in set (0.00 sec)
    
    mysql> show create table test_1\G
    *************************** 1. row ***************************
           Table: test_1
    Create Table: CREATE TABLE `test_1` (
      `name` varchar(20) DEFAULT NULL,
      `year` int(5) DEFAULT NULL
    ) ENGINE=MyISAM DEFAULT CHARSET=latin1     --> 默认的表引擎为MyISAM;
    1 row in set (0.00 sec)
    
    mysql> alter table test_1 type=InnoDB;  -->  修改表的数据引擎;
    Query OK, 0 rows affected, 1 warning (0.11 sec)
    Records: 0  Duplicates: 0  Warnings: 0
    
    mysql> show create table test_1\G
    *************************** 1. row ***************************
           Table: test_1
    Create Table: CREATE TABLE `test_1` (
      `name` varchar(20) DEFAULT NULL,
      `year` int(5) DEFAULT NULL
    ) ENGINE=InnoDB DEFAULT CHARSET=latin1  --> 显示表的数据引擎已经变为InnoDB;
    1 row in set (0.00 sec)
    
    mysql>

    2、

    mysql> show engines;   -->  查看MySQL支持引擎   
    +------------+---------+------------------------------------------------------------+--------------+------+------------+
    | Engine     | Support | Comment                                                    | Transactions | XA   | Savepoints |
    +------------+---------+------------------------------------------------------------+--------------+------+------------+
    | MRG_MYISAM | YES     | Collection of identical MyISAM tables                      | NO           | NO   | NO         |
    | CSV        | YES     | CSV storage engine                                         | NO           | NO   | NO         |
    | MyISAM     | DEFAULT | Default engine as of MySQL 3.23 with great performance     | NO           | NO   | NO         |
    | InnoDB     | YES     | Supports transactions, row-level locking, and foreign keys | YES          | YES  | YES        |
    | MEMORY     | YES     | Hash based, stored in memory, useful for temporary tables  | NO           | NO   | NO         |
    +------------+---------+------------------------------------------------------------+--------------+------+------------+
    5 rows in set (0.00 sec)
    
    mysql>


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  • 原文地址:https://www.cnblogs.com/kumulinux/p/2808740.html
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