如何使用 MyISAM 引擎表建立 MySQL 表?


要建立使用 MyISAM 引擎的 MySQL 表,我們可以使用 ENGINE 命令。首先使用 CREATE 命令建立表。

mysql> create table StudentRecordWithMyISAM
   -> (
   -> Id int,
   -> StudentName varchar(100),
   -> StudentAge int
   -> )ENGINE=MyISAM;
Query OK, 0 rows affected (0.26 sec)

上面,我們已將 ENGINE 設為 “MyISAM”。

要檢查表中顯示的列數,使用 DESC 命令。

mysql> DESC StudentRecordWithMyISAM;

輸出如下。

+-------------+--------------+------+-----+---------+-------+
| Field       | Type         | Null | Key | Default | Extra |
+-------------+--------------+------+-----+---------+-------+
| Id          | int(11)      | YES  |     | NULL    |       |
| StudentName | varchar(100) | YES  |     | NULL    |       |
| StudentAge  | int(11)      | YES  |     | NULL    |       |
+-------------+--------------+------+-----+---------+-------+
3 rows in set (0.00 sec)

檢查表是否顯示為 MyISAM。

mysql>  SHOW TABLE STATUS FROM business LIKE 'StudentRecordWithMyISAM';

以下輸出清楚地顯示了 ENGINE 是 MyISAM。

+-------------------------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+------------+--------------------+----------+----------------+---------+
| Name                    | Engine | Version | Row_format | Rows | Avg_row_length | Data_length | Max_data_length | Index_length | Data_free | Auto_increment | Create_time         | Update_time         | Check_time | Collation          | Checksum | Create_options | Comment |
+-------------------------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+------------+--------------------+----------+----------------+---------+
| studentrecordwithmyisam | MyISAM |      10 | Dynamic    |    0 |              0 |           0 | 281474976710655 |         1024 |         0 |              1 | 2018-10-22 15:47:01 | 2018-10-22 15:47:02 | NULL       | utf8mb4_unicode_ci |     NULL |                |         |
+-------------------------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+------------+--------------------+----------+----------------+---------+
1 row in set (0.14 sec)

檢查 MyISAM 表是否存在。

mysql> SELECT TABLE_NAME,
   ->  ENGINE
   -> FROM information_schema.TABLES
   -> WHERE TABLE_SCHEMA = 'business' and ENGINE = 'MyISAM';

輸出如下。

+-------------------------+--------+
| TABLE_NAME              | ENGINE |
+-------------------------+--------+
| studentrecordwithmyisam | MyISAM |
+-------------------------+--------+
1 row in set (0.00 sec)

更新於:30-7 月 -2019

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