I have many rows/records where one of the columns (movieId) is void of any useful values:

[![enter image description here](https://i.stack.imgur.com/LwewR.png)](https://i.stack.imgur.com/LwewR.png)

Based on the answer [here](https://stackoverflow.com/questions/10654614/delete-empty-rows), the following should work:

[![enter image description here](https://i.stack.imgur.com/mFtPF.png)](https://i.stack.imgur.com/mFtPF.png)

...but it doesn't, as you can see in the rectangled "no rows affected"

How can I eliminate/delete all the rows with nothing (but empty space) in the MovieId column?