I don’t even do this, it’s too easy to sidestep. For example using any GUI client where the current selection or statement is executed by default. (Yes this is very useful, no I am not interested in being convinced not to use these tools thank you.)
Instead I do my dry run queries with a read only user and I select the affected data, often using CTEs (or temp tables where performance is an issue) to model any intermediate state. I don’t ever run any writes of this kind without review, backups, and automation.
Instead I do my dry run queries with a read only user and I select the affected data, often using CTEs (or temp tables where performance is an issue) to model any intermediate state. I don’t ever run any writes of this kind without review, backups, and automation.