Why does mysql evaluate (TRUE or TRUE and FALSE) to true?

Question

If you type

SELECT (true or true and false) 

in mysql it will return 1 which is true. Why is that so? What's the order of evaluation in boolean expressions?

Answer 1

According to the MySQL documentation on operator precedence, AND is evaluated before OR.
That means your expression (true OR true AND false) is evaluated as (true OR (true AND false)).