Tag: mysql

Removing bbPress forum comments

In addition to my previous post about removing WooCommerce products, I just used the same snippet to remove 400k bbPress replies.

With this query you can remove all the replies:

DELETE relations.*, taxes.*, terms.*
FROM wp_term_relationships AS relations
INNER JOIN wp_term_taxonomy AS taxes
ON relations.term_taxonomy_id=taxes.term_taxonomy_id
INNER JOIN wp_terms AS terms
ON taxes.term_id=terms.term_id
WHERE object_id IN (SELECT ID FROM wp_posts WHERE post_type='reply');

DELETE FROM wp_postmeta WHERE post_id IN (SELECT ID FROM wp_posts WHERE post_type = 'reply');
DELETE FROM wp_posts WHERE post_type = 'reply';

And use this to empty all bbPress topics:

DELETE relations.*, taxes.*, terms.*
FROM wp_term_relationships AS relations
INNER JOIN wp_term_taxonomy AS taxes
ON relations.term_taxonomy_id=taxes.term_taxonomy_id
INNER JOIN wp_terms AS terms
ON taxes.term_id=terms.term_id
WHERE object_id IN (SELECT ID FROM wp_posts WHERE post_type='topic');

DELETE FROM wp_postmeta WHERE post_id IN (SELECT ID FROM wp_posts WHERE post_type = 'topic');
DELETE FROM wp_posts WHERE post_type = 'topic';

Worked like a charm! Now all bbPress topics and replies are deleted.

Bash script to make MySQL back-ups

This simple but effective script makes a back-up of the target SQL database and deletes databases older then 90 days. I keep the folder synchronized with other systems so the customer can reach his database with 90 days retention himself.

#!/bin/bash

cd /backups

user="mysql_user"
passwd="password"
host="localhost"
db_name="mysql_database"

backup_path="/backups"
date=$(date +"%d-%b-%Y")

umask 177

# dump the database
mysqldump --user=$user --password=$passwd --host=$host $db_name > $backup_path/$db_name-$date.sql

# zip contents
zip $db_name-$date.zip $db_name-$date.sql

# remove old backups
find $backup_path/* -mtime +90 -exec rm {} \;

echo done

 

Of course, instead of setting the username/passwd variables in the script itself you can read the DirectAdmin credentials with:

source /usr/local/directadmin/conf/mysql.conf