Question

I have to delete some table data in prod. db and for the records that are going to be deleted a backup of records should be copied to another local db. This involves two databases, residing in two different servers/instances.

Is it possible to do via sql (mysql) query to do this?

Answer 1

I would use mysqldump with a where condition to get the records out. Once you have everything saved, you can then delete them from prod. These commands should work from the command line, including the password to avoid the prompt is optional.

mysqldump -u user -pPassword -h hostname1 dbname tablename 
    --where 'field1="delete"' 
    --skip-add-drop-table --no-create-db --no-create-info > deleted.sql
mysql -u user -pPassword -h hostname2 dbname < deleted.sql
mysql -u user -pPassword -h hostname1 dbname -e 'DELETE FROM tablename WHERE field1="delete"'