MySQL（5.6）“select * into outfile ..”not creating files

Question

当我在本地主机上以root用户身份使用此命令时，它运行时没有问题，但我似乎无法找到实际的文件。

SELECT * INTO OUTFILE 'C:\...\tableName.txt' 
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' 
LINES TERMINATED BY '\r\n' 
FROM tableName; 

当我试图再次运行查询时，它说该文件已经创建，即使它显然不是。

编辑：固定我的查询语法

Answer 1

还有就是你*后不必要的FROM。您的查询应该看起来更像是这样的：

SELECT * INTO OUTFILE 'C:\...\tableName.txt' 
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '\r\n' 
FROM tableName; 

注：确保MySQL已经写权限'C:\...\tableName.txt'

至于该文件已经被创建的错误：

该文件可能已被创建在mysql实际上有权写入的另一个目录中，如数据目录。这就是为什么您收到消息说您已经多次运行该查询，该文件已被创建。

从MySQL命令行运行show variables like '%dirdata%';，你应该看到的输出，看起来是这样的：在Windows

mysql> show variables like '%datadir%'; 
+---------------+-------------------------------------+ 
| Variable_name | Value        | 
+---------------+-------------------------------------+ 
| datadir  | c:\wamp\bin\mysql\mysql5.6.17\data\ | 
+---------------+-------------------------------------+ 
1 row in set (0.35 sec) 

导航到该文件夹​​，你应该在那里找到你的文件。

Answer 2

SELECT r INTO OUTFILE 'c:\dev\myA2.txt' 
    FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' 
    LINES TERMINATED BY '\n' 
    FROM a2; 

-- leads me to believe it works first time with rowcount output 
-- but it does not put file in dev 
-- run it again it says error 1086: File 'c:devmyA2.txt' already exists 

so that means it wrote it to c: 

the default of what mysql query engine has for c: at that time 

I did not hunt for it ! 

the following works great (note the double slashes \\): 

SELECT r INTO OUTFILE 'c:\\dev\\drew_so_answers\\myA2.txt' 
    FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' 
    LINES TERMINATED BY '\n' 
    FROM a2;