Αποτελέσματα Αναζήτησης
9 Ιουν 2011 · delete from YourTable where YourTable.columnA in (select columnA from YourTable group by column A having count(*) > 1)
16 Απρ 2024 · Deleting a MySQL user removes the user's account and the associated grant table privileges. Only admins with global CREATE USER or DELETE privileges can remove another user from MySQL. In this tutorial, learn how to remove one or more MySQL user accounts using the DROP USER statement.
To remove a user account from the MySQL Server, you use the DROP USER statement as follows: DROP USER account_name; 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.
The DELETE statement is used to delete existing records in a table. DELETE Syntax. DELETE FROM table_name WHERE condition; Note: Be careful when deleting records in a table! Notice the . WHERE clause in the DELETE statement. The WHERE clause specifies which record (s) should be deleted.
4 Απρ 2021 · DELETE t1 FROM data t1 JOIN data t2 USING (channel_id,timestamp) WHERE t1.id > t2.id
DROP USER [IF EXISTS] user [, user] ... The DROP USER statement removes one or more MySQL accounts and their privileges. It removes privilege rows for the account from all grant tables.
DELETE del FROM words AS del JOIN ( SELECT `char`, category, ( SELECT i.id FROM words AS i WHERE i.`char` = d.`char` AND i.category = d.category ORDER BY i.id DESC LIMIT 1 OFFSET @N ) AS id FROM words AS d GROUP BY `char`, category ) AS tmp ON del.`char` = tmp.`char` AND del.category = tmp.category AND del.id <= tmp.id ;
