MySQL報錯：ERROR 1290 (HY000): The MySQL server is running with the --secure-file-priv option so it cannot execute this statement

1.報錯

ERROR 1290 (HY000): The MySQL server is running with the --secure-file-priv option so it cannot execute this statement

2.原因

什麼是secure-file-priv，按照字面意思，就是安全的檔案許可權（pri

This option sets the secure_file_priv system variable, which is used to limit the effect of data
import and export operations, such as those performed by the LOAD DATA and SELECT … INTO
OUTFILE statements and the LOAD_FILE() function.

【譯：這個選項設定系統變數： secure_file_priv，這個變數被用於限制資料匯入的匯出操作，諸如執行LOAD DATA以及SELECT ... INTO OUTFILE操作以及LOAD_FILE()函式。 】
那麼這個secure_file_priv可以設定的值有哪些呢？其有三個值可以配置，如下：

• If empty, the variable has no effect. This is not a secure setting. 【如果此配置項值為空，則表示沒有安全設定】
• If set to the name of a directory, the server limits import and export operations to work only with files in that directory. The directory must exist; the server will not create it.
• If set to NULL, the server disables import and export operations. This value is permitted as of MySQL 5.7.6

檢視mysql的該變數值，如下：

mysql> show variables like '%secure_file_priv%';
+------------------+-------+
| Variable_name    | Value |
+------------------+-------+
| secure_file_priv | NULL  |
+------------------+-------+
1 row in set, 1 warning (0.00 sec)

根據上述的NULL值，可以看到是不允許匯出（入）到檔案。

3.解決辦法

在配置檔案中，設定secure-file-priv為某個路徑即可，如下：

mysql> show variables like '%secure_file_priv%';
+------------------+--------------------------------------------------+
| Variable_name    | Value                                            |
+------------------+--------------------------------------------------+
| secure_file_priv | D:\Program Files\MySQL\MySQL Server 5.7\outfile\ |
+------------------+--------------------------------------------------+
1 row in set, 1 warning (0.00 sec)

4. 結果

再次執行上述的SQL，如下：

mysql> select * from student into outfile 'D:/Program Files/MySQL/MySQL Server 5.7/outfile/student.csv';
Query OK, 2 rows affected (0.00 sec)

檢視執行結果如下：