MYSQL OR vs IN performance

Question

I am wondering if there is any difference in regards to performance between the following

SELECT ... FROM ... WHERE someFIELD IN(1,2,3,4)

SELECT ... FROM ..         


        

Answer 1

OR will be slowest. Whether IN or BETWEEN is faster will depend on your data, but I'd expect BETWEEN to be faster normally as it can simple take a range from an index (assuming someField is indexed).