以下查询在MySQL中是否有效:
SELECT * FROM table WHERE field & number = number;
# to find values with superset of number's bits
SELECT * FROM table WHERE field | number = number;
# to find values with subset of number's bits
如果没有为该字段创建索引,是否有办法使其运行更快?
如果没有,有什么方法可以使其运行更快?