Write a query to extract only the zipcode from customers address

Insert into table customerPayment, columns customerOrderld and total result set returned from query a. Select columns id and total from table customerOrder where column orderStateld is equal to subquery i. (select column id from table orderState where column state is equal to "Payment received") Write Test Case 1 as a SQL join query to do the following a. Select using concatenation of columns firstName and lastName from table www customer as Customer b. Select customerOrderId from table customerPayment as "Customer Order" c. Select description from table product as Product d. Select total from table customerOrder as “Product Total" e. Join tables customerPavment, customerOrder, customer, product f. Order by column lastName from table customer Alter table purchaseOrder add column total as data type decimal size 7,2, not null, default value of 0.0

b. Write a query to get the average salary and the total number of employees who work in the History department (in that order).   c. Write a query to get the number of employees working in the History department with a job title of Head of Department.