like not like sql code example

Example 1: sql is not like

SELECT * FROM emp
  WHERE name NOT LIKE 'a%'			-- not starting with a
  AND name NOT LIKE '%a'			-- not ending with a
  AND name NOT LIKE '%a%'			-- not containing  a
  AND upper(name) NOT LIKE '%A%'	-- not containing  a or A

Example 2: like operator in sql

(Like) Operator for partial searches using wildcard '%' and '_'
For Example:
Select * From Employees
Where last_name LIKE '_a%';