not like sql code example

Example 1: like sql

WHERE CustomerName LIKE 'a%'	
--Finds any values that start with "a"
WHERE CustomerName LIKE '%a'	
--Finds any values that end with "a"
WHERE CustomerName LIKE '%or%'	
--Finds any values that have "or" in any position
WHERE CustomerName LIKE '_r%'	
--Finds any values that have "r" in the second position
WHERE CustomerName LIKE 'a__%'	
--Finds any values that start with "a" and are at least 3 characters in length
WHERE ContactName LIKE 'a%o'	
--Finds any values that start with "a" and ends with "o"

Example 2: 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 3: SQL is not like

SELECT * FROM Student
WHERE FirstName NOT LIKE '%B%'

Example 4: like in sql

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