When I have some attributes in the table marked as NULL (that they can be) and I try to fill the table using Adminer, these attributes are always filled by NULL values. Even though I filled inputs with my values. What I have to do is to manually switch NULL option in the select box next to the input field. That's quite WTF behavior. I noticed that I have NULLs in my table after minutes of app debugging:) Maybe the solution could be to have an empty option as a default value, not NULL option. Thx.