SQL:INTO OUTFILE错误:文件/data.csv已存在

I am trying to export sql query result to a file so that I can provide user a download link to download. But I am getting some issues:

Issue 1: After execution I could not find data.csv in the root folder.

Issue 2: If I try again then it says that file already exists.

I am using following code:

 $query = <<<EOL
   SELECT * FROM data
   INTO OUTFILE '/data.csv'
   FIELDS TERMINATED BY ','
   ENCLOSED BY '"'
   LINES TERMINATED BY '
'
EOL;

 $result = mysql_query($query);

Solutions I want:

1- I need to know from where I can locate file.

2- I need to be able this csv file through php after execution.

Details about the Environment I am using for this script:

  • Local Host
  • Xampp (Apache & MySQL)
  • Operating System: Windows 10