![]() ![]() This is called an object cache, and if the plugin has an option to disable its object cache, use that option as opposed to deactivating the plugin. Syntax USER () Technical Details Works in: From MySQL 4. Tip: Also look at the CURRENTUSER () function. Note: This function is equal to the SESSIONUSER () function and the SYSTEMUSER () function. Note: if you are using any type of cache plugin that caches DB queries, you should deactivate it before starting this process, and then re-enable it afterwards. The USER () function returns the current user name and host name for the MySQL connection. If there are any issues with the new tables, revert the rename process to restore the original tables.Īfter you verify that your site is running fine with the two new tables, you can drop the two original tables since they are no longer needed. If you want to remove multiple user accounts. Whether working in a team that has multiple members needing access to the database or creating and deleting test users to simulate database privileges, knowing how to add and remove database users is important. In this syntax, you specify the name of the user account that you want to remove after the DROP USER keywords. Your site will throw errors during the minute or so you do the renaming. More often than not, when working with a database you will need to be able to create and delete users. To delete a model from the model catalog, issue a query similar to the following: mysql> DELETE FROM MLSCHEMAuser1.MODELCATALOG WHERE modelid 3 where: MLSCHEMA user1. If the new tables look OK, use phpMyAdmin to rename wp_users and wp_usermeta to something else (rename wp_users first), and afterwards, rename wp_users2 and wp_usermeta2 to wp_users and wp_usermeta (rename wp_usermeta2 first). A model can be deleted by the owning user or users that have been granted the required privileges on the MODELCATALOG table. You now have tables with only the users you want, but please inspect both before proceeding. INSERT INTO wp_users2 SELECT * FROM wp_users WHERE ID IN (1,8,44) Log into phpMyAdmin with a MySQL user account that can delete databases. Then run the following two queries (using the correct table prefix): INSERT INTO wp_usermeta2 SELECT * FROM wp_usermeta WHERE user_id IN (1,8,44) Open a terminal on your system and follow these steps to delete a user from MySQL or MariaDB: Open MySQL as the root user. Now find the IDs of the three users you want to retain. This statement requires a CREATE USER privilege or DELETE privilege for the mysql database, which contains user account information and privileges. Change the table prefix from wp_ to the one in use on your site. You’ll need to do this with the wp_users and wp_usermeta tables, and give the new tables names of, say, wp_users2 and wp_usermeta2. To remove a user account from the MySQL Server, you use the DROP USER statement as follows: DROP USER accountname Code language: SQL (Structured Query Language) (sql) In this syntax, you specify the name of the user account that you want to remove after the DROP USER keywords. ![]() ![]() Instead, use the phpMyAdmin “Copy Table” feature (accessed from the Operations tab when viewing the table contents), and select the Structure only option. If you only want to retain three out of 364K users, you DO NOT want to use DELETE queries! ![]()
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