如何還原由mysqldump建立的檔案?
假設我們要還原一個由mysqldump建立的檔案,則可以在建立後在現有資料庫或新資料庫中還原它。然後,藉助SOURCE語句,我們可以還原它。我們可以透過一個示例來說明它
舉例
在此示例中,我們正在還原名為 student_info.sql 的已轉儲表。它基本上在名為“query”的資料庫中。現在,我們將把它還原到名為“tutorials”的資料庫中。
mysql> Use Tutorials; Database changed mysql> SOURCE student_info.sql; Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected, 1 warning (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.45 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.05 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 7 rows affected (0.05 sec) Records: 7 Duplicates: 0 Warnings: 0
現在,藉助以下語句,我們可以看到“student_info”表已還原到名為“教程”的資料庫中。
mysql> Show tables; +---------------------+ | Tables_in_tutorials | +---------------------+ | rtgs | | student_info | +---------------------+ 2 rows in set (0.00 sec) mysql> Select * from Student_info; +------+---------+------------+------------+ | id | Name | Address | Subject | +------+---------+------------+------------+ | 101 | YashPal | Amritsar | History | | 105 | Gaurav | Chandigarh | Literature | | 125 | Raman | Shimla | Computers | | 130 | Ram | Jhansi | Computers | | 132 | Shyam | Chandigarh | Economics | | 133 | Mohan | Delhi | Computers | | 150 | Saurabh | NULL | Literature | +------+---------+------------+------------+ 7 rows in set (0.00 sec)
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