added views.sql

Author: AnuragAnalog

views.sql

@@ -0,0 +1,36 @@
+
+-- creating basic stuff to work on them
+create database cheatsheet;
+use cheatsheet;
+
+create table employee
+(
+    employee_id int primary key,              -- Setting primary key(1st method)
+    first_name varchar(50),
+    last_name varchar(50),
+    dept_number int,
+    age int,
+    salary real
+);
+
+insert into employee (employee_id, first_name, last_name, dept_number, age, salary) values (1, "Anurag", "Peddi", 1, 20, 93425.63);
+insert into employee values (2, "Anuhya", "Peddi", 2, 40, 83425.63);
+insert into employee values (3, "Vageesh", "Padigela", 3, 50, 83625.63);
+insert into employee values (4, "Rishi", "Kumar", 5, 25, 83765.23);
+insert into employee values (5, "Ashish", "Gupta", 4, 36, 103425.63);
+insert into employee values (6, "Akash", "Pippera", 6, 71, 113425.63);
+
+-- create a view
+create view personal_info as select first_name, last_name, age from employees;
+
+-- displaying view
+select * from personal_info;
+
+-- updating in view
+update personal_info set salary = 1.1 * salary;
+
+-- deleting record from view
+delete from personal_info where age < 40;
+
+-- droping a view
+drop view personal_info;