sql compare text and varchar code example

Example 1: sql comparison operators

(Between) operator same as  ">= <="
For example: 
Select * From Employees Where salary Between 4000 AND 6000;

(NOT) operator excluding given
For example:
Select last_name, job_id From Employees
Where "Not" job_id = 'ABC';


(IN) operator in sql like "OR" operator
For example: 
Select * From employees
Where department_id "IN" (60,90); 


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


(Top N results)
Select * From Employees Where ROWNUM <=5;


(NVL) replaces NULL values with same type default
value provided.
For Example = 
Select NVL(commission_percentage, 0)
From Employees;

Example 2: compare strings lexicographically in sql

'ball' < 'water'
  
  if you are looking for solving the question from HyperSkills/expressions then this is what you need(don't forget to use Select statement) :D