SELECT users from MySQL database by privileges bitmask?

Question

I have users table and want to SELECT some rows by bitmask criteria. I\'ll try to explain my problem with small example.

Structure of table users

Answer 1

[...] want to SELECT some fields

Wrong. You want to select some Rows. Columns are usually called fields.

You are supposed to read the Documentation: Bit Functions are documented for mysql.

So you can try:

Select * from users WHERE (user_privileges & 1) >0

Answer 2

SELECT
    *
FROM
    users
WHERE
    (user_privileges & <level>) = <level>

<level> being the access level you want to search on (e.g. 1, 5, 9, 130, etc.)