/* 015 - ORDER BY & DISTINCT */
-- create table
CREATE TABLE tOne(
id INT NOT NULL UNIQUE,
name VARCHAR(50) NOT NULL,
age INT NOT NULL CHECK(age >= 18),
gender VARCHAR(1) NOT NULL,
phone VARCHAR(10) NOT NULL UNIQUE,
city VARCHAR(15) NOT NULL DEFAULT 'Agra'
);
-- insert records
INSERT INTO tOne(id,name,age,gender,phone,city)
VALUES
(1,"Ram Kumar","23","M","4022155","Agra"),
(2,"Sarita Kumari","21","F","4034421","Delhi"),
(3,"Salman Khan","20","M","4056221","Agra"),
(4,"Juhi Chawla","28","F","4022156","Bhopal"),
(5,"Anil Kapoor","22","M","4025221","Agra"),
(6,"John Abraham","21","M","4056776","Delhi");
-- ORDER BY
SELECT * FROM tOne ORDER BY name; -- alphabetic order
SELECT * FROM tOne ORDER BY name DESC; -- descending order
SELECT * FROM tOne WHERE city = "Agra" ORDER BY name DESC; -- WHERE, ORDER BY, DESC
SELECT * FROM tOne WHERE city = "Agra" ORDER BY name; -- WHERE, ORDER BY, DESC
SELECT * FROM tOne ORDER BY age; -- order by using numbers
SELECT * FROM tOne ORDER BY city;
SELECT * FROM tOne ORDER BY name,city; -- multiple order
-- DISTINCT ( show only unique values , no duplicate )
SELECT DISTINCT city FROM tOne;
SELECT DISTINCT age FROM tOne;
SELECT DISTINCT age FROM tOne ORDER BY age;