Occupations SQL Hacker Rank Solution

Hello coders, In this post, you will learn how to solve the Occupations SQL Hacker Rank Solution. This problem is a part of the SQL Hacker Rank series.

Problem

Write a query that prints a list of employee names (i.e.: the name attribute) from the Employee table in alphabetical order.

Input Format

The Employee table containing employee data for a company is described as follows:

where employee_id is an employee’s ID number, name is their name, months is the total number of months they’ve been working for the company, and salary is their monthly salary.

Sample Input

Sample Output

Angela
Bonnie
Frank
Joe
Kimberly
Lisa
Michael
Patrick
Rose
Todd

Occupations SQL Hacker Rank Solution

set @d=0, @p=0, @s=0, @a=0;
select min(Doctor), min(Professor), min(Singer), min(Actor)
from(
  select case
            when Occupation='Doctor' then (@d:=@d+1)
            when Occupation='Professor' then (@p:=@p+1)
            when Occupation='Singer' then (@s:=@s+1)
            when Occupation='Actor' then (@a:=@a+1)
            end as Row,
        case when Occupation='Doctor' then Name end as Doctor,
        case when Occupation='Professor' then Name end as Professor,
        case when Occupation='Singer' then Name end as Singer,
        case when Occupation='Actor' then Name end as Actor
  from OCCUPATIONS
  order by Name
) as temp
group by Row;

Disclaimer: The above Problem (Occupations) generated by Hackerrank but the Solution is Provided by Chase2Learn. This tutorial is only for Educational and Learning purposes.