How to delete all images from code in all post_content

In the past I occationally used this sql query to update links in post_content:

    update wp_posts set post_content = replace(post_content,'domain.org/Maries','maries.no');

I wonder if I could use a similar query to delete all images from the code in post_content, by using something like:

 replace(post_content,'<img*/>,'');

Or probably better, with a regular expression?