How can I fix the mariadb, that cannot be installed after / etc/mysql has been deleted?

hand disabled deleted everything in the / etc/mysql folder, making it impossible to install mariadb, now. How should I fix it?

update-alternatives: error: alternative path / etc/mysql/mariadb.cnf doesn"t exist

dpkg: error processing package mariadb-common (--configure):
installed mariadb-common package post-installation script subprocess returned error exit status 2

Errors were encountered while processing:
mariadb-common

E: Sub-process / usr/bin/dpkg returned an error code (1)
Thank you

Mariadb mysql

Mar.13,2021

sudo apt-get remove-- purge mysql-*
sudo apt-get install mysql-server mysql-client

Previous: Count () sorting problem of oracle Database

Next: Js string interception?

Can the counterparty access my database through php curl?
want to check the hypothesis. I want the counterparty to access my database via php curl what can I do this? Is there a template you can refer to? this is due to the fact that the host is in parallel with mysql and all the mysql data are managed cent...

Mariadb mysqli mysql php7 php

Mar.04,2021
Update data sheets and data sheets directly with sql? The number of databases that make my balls hurt.
the starting point is the article ID , which is assumed to be 123 . Now I want to find a match post_id = 123 , and then match meta_key = _ thumbnail_id and meta_value = 456 and then use the ID of 456 to find the ID, of wp_posts data table. d...

Php mysql mysqli mariadb mysqldb

Jul.11,2021
Mysql does not have the data for this condition? Update the value of data from another table to another table?
question A number table is post_id B number table bit is url An and B have a lot of data An and B some post_id matches url, and some are inconsistent (the fields related to An and B are post_id and url) how do I eliminate all those that do not matc...

Php mariadb mysqli mysql

Jul.12,2021
Find out the order, but does not contain some goods! As long as there is a non-conforming order, it will not be displayed?
assume the data table relationship: order order data sheet: order_id public_order_id 1 AAA 2 BBB 3 CCC prod goods data sheet: order_id prod_id 1 100 1 101 1 102 2 101 2 103 3 102 3 104 Front end display AAA BBB CCC when...

Mariadb mysql php7 mysqli php

Oct.26,2021
I'd like to ask about the concept of php OOP and sort out some parts that I don't understand.
I have recently seen a lot of OOP teaching mysqli (or PDO), found it to be a new world). The way I now connect to databases and statements is to introduce a large php file on each page, including links, and there are many small php files, which may be f...

Oop mariadb mysqli php7 php

Nov.10,2021
Php an action is used in more than two places, how to propose it?
two hypotheses A $do->query( "INSERT INTO `abc` ( `public_order_id`, `add_time`, `status` ) VALUES ( {$public_order_id} , {$add_time} , ) &...

Php php7 mysql mariadb mysqli

Apr.04,2022
How to set up the remote connection of mariadb?
I added the mainframe in LINODE, and set up ubuntu 18.04 ephemeral apache.p7.3 phpmyadmin . but I can t remotely connect to the mariadb of this host on the local 127.0.0.1? my phpmyadmin can connect to the database normally phpmyadmin 127.0.0....

Php ubuntu mariadb mysql mysqli

May.11,2022
How to separate data tables, but can still be used together on the site? As there is more and more data, the SQL file size becomes larger and larger.
the problem I face now is I have a datasheet that is almost 1 million. it s not a way to go on like this. how can I separate it out, but I can still use the data from the datasheet? because suppose I export it to the drop table I can t use it ...

Mysql-optimized php7 mariadb mysql php

Jun.01,2022
What is the order number per hour?
$ymdh = date( Y m d H ); $findOrderSoFar = mysqli_fetch_array($pdo->query( "SELECT count(public_order_id) as num FROM `order_record` WHERE FROM_UNIXTIME(add_time, %Y %m %d %H ) = {$ymdh} " )); $i $i = $findOrd...

Mariadb mysql php7 php

Jun.24,2022

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e4554f-44b20.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e4554f-44b20.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?