sql - MySql How to set a local variable in an update statement (Syntax?)

Question

How can I set a variable while doing an Update statement? I can't seem to figure out the syntax.

So I want something like this below but it's saying the syntax is wrong:

SET @tempVariable := 0;
UPDATE myTable SET col1 = 5, col2 = @tempVariable, @tempVariable := 100;

Answer 1

This is possible :-

 UPDATE myTable SET col1 = 5,
 col2 = (@tempVariable:=@tempVariable+1) // to increment

To set an integer (not increment)

 UPDATE myTable SET col1 = 5, 
 col2 = (@tempVariable:=100) // to assign any integer