Search by tag: mariadb
3 articles
MariaDB / MySQL: generate a row number
There is currently no built-in method to return row numbers. The solution is to use a variable which is incremented in each row, like this: @currentRow := @currentRow + 1 AS rowNumber We can use a JOIN statement to initialise the variable without SET: JOIN (SELECT @currentRow := 0) row Another…
MariaDB / MySQL: export or backup data to a CSV file
It seems there are several ways to do this. Here is one, using the mysql prompt. I used mysql root account because my usual user has not enough permissions to write files (ERROR 1045 (28000): Access denied for user 'username'@'localhost' (using password: YES)), even after a chmod 777: UPDATE: We…
MariaDB / MySQL: backup and restore a specific table
We just have to specify the name of the table we want to backup in the usual mysqldump command: $ mysqldump -h hostname -u username -p database_name table_name > backup_table_name.sql Then, to restore it: Source