-- create a table
CREATE TABLE students (
  id INTEGER PRIMARY KEY,
  name TEXT NOT NULL,
  gender TEXT NOT NULL
);
-- insert some values
INSERT INTO students VALUES (1, 'Ryan', 'M');
INSERT INTO students VALUES (2, 'Joanna', 'F');
insert into students values (3,'Johnn','M');
-- fetch some values
SELECT * FROM students WHERE gender = 'F' or  gender = 'M';
SELECT * FROM students where name = 'Ryan' or name = 'Joanna';
SELECT * FROM students where gender = 'M' or gender = 'F';
select * from students where name = 'Johnn';
select * from students where name = 'Ryan' or 'Johnn';
select * from students where name = 'Ryan'and not name= 'Johnn';