datagrip Cannot apply changes This table is read only. Cell editor changes cannot be applied

What actually helped was toggling Auto-commit checkbox in console, after that everything runs flawlessly.

Try synchronize database connection. It helped me in mysql connection.

In my case in version 2020.1 of DataGrip (SQL was run from the opened file, on unique table, so that select just worked as expected, but when I was trying to edit - error appeared: unresolved table reference): specifying schemes in request helped. So that SELECT * FROM users; was changed to SELECT * FROM schemadb.users; and that helped. Probably there is a bug. I've tried all the methods mentioned above.