What is the difference between SET and SELECT methods?

76.

Can assign values ";" separated in SET. But not in SELECT
EX:
SET @A = 1; @B = 2; @C = 3
SELECT @A=1 SELECT @B=2 SELECT @C=3

Can assign values "," separated in SET. But not in SELECT
EX:
SET @A = 1, @B = 2, @C = 3
SELECT @A=1 SELECT @B=2 SELECT @C=3

Can assign values "," separated in SELECT.
Can assign values "|" separated in SET
EX:
SET @A = 1 | @B = 2 | @C = 3
SELECT @A=1, @B=2, @C=3

Can assign values "," separated in SELECT. But not in SET
EX:
SELECT @A = 1, @B = 2, @C = 3
SET @A=1 SET @B=2 SET @C=3

View Description

Assigning of values "," separated in SELECT like this is applicable
EX: SELECT @A = 1, @B = 2, @C = 3
following ex: is also true about SELECT
SELECT @A = 1
SELECT @B =2
SELECT @C = 3

Where as in SET, all variable assignments cannot be comma separated. only way of assigning values to multiple variables is by providing keyword SET before each assignment like this:

SET @A=1
SET @B=2
SET @C=3