MySQL INTO OUTFILE override existing file?

Question

I\'ve written a big sql script that creates a CSV file. I want to call a cronjob every night to create a fresh CSV file and have it available on the website.

Say for

Answer 1

3 steps to do this right. Your backup will be executed every night while you sleep (or not)

STEP 1 : Create a stored procedure for your SQL

CREATE PROCEDURE backupCSV()
SELECT * INTO OUTFILE '/home/sites/example.com/www/files/backup.csv'
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
LINES TERMINATED BY '\n'
FROM ( ....

STEP 2 : Create a script "/home/backupCSV.sh" to delete old file and call the stored procedure

echo "$(date +"%Y-%m-%d %T") START MAINTENANCE SCRIPT "
rm /home/sites/example.com/www/files/backup.csv
echo "$(date +"%Y-%m-%d %T")    SUCCESS >> Old file deleted"
mysql --user=[user] --password=[password] [dataBaseName] --execute="CALL backupCSV();"
echo "$(date +"%Y-%m-%d %T")    SUCCESS >> New file created"
echo "$(date +"%Y-%m-%d %T") END MAINTENANCE SCRIPT "

STEP 3 : Update Crontab to execute the script everyday

# m h dom mon dow user  command

 0   3  * * *   root    sh -x /home/backupCSV.sh

STEP 4 (optionnal) : thanks me ;)