how to use / in mysql code example

Example 1: mysql is in list

SELECT 
    column1,column2,...
FROM
    table_name
WHERE 
	(expr|column_1) IN ('value1','value2',...);

Example 2: mysql in

SELECT 
    column1,column2,...
FROM
    table_name
WHERE 
    column1 IN ('value1','value2',...);