SQL subqueries on employee Database: List all the employees of grade 2 and 3

SQL subqueries on employee Database: Exercise-5 with Solution

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5. From the following table, write a SQL query to find the employees of grade 2 and 3.Return all the information of employees and salary details.

Sample table: employees

Sample table: salary_grade

Sample Solution:

SELECT *
FROM employees e,
     salary_grade s
WHERE e.salary BETWEEN s.min_sal AND s.max_sal
  AND s.grade IN (2, 3);

Sample Output:

 emp_id | emp_name | job_name | manager_id | hire_date  | salary  | commission | dep_id | grade | min_sal | max_sal
--------+----------+----------+------------+------------+---------+------------+--------+-------+---------+---------
  64989 | ADELYN   | SALESMAN |      66928 | 1991-02-20 | 1700.00 |     400.00 |   3001 |     3 |    1501 |    2100
  65271 | WADE     | SALESMAN |      66928 | 1991-02-22 | 1350.00 |     600.00 |   3001 |     2 |    1301 |    1500
  66564 | MADDEN   | SALESMAN |      66928 | 1991-09-28 | 1350.00 |    1500.00 |   3001 |     2 |    1301 |    1500
  68454 | TUCKER   | SALESMAN |      66928 | 1991-09-08 | 1600.00 |       0.00 |   3001 |     3 |    1501 |    2100
  69324 | MARKER   | CLERK    |      67832 | 1992-01-23 | 1400.00 |            |   1001 |     2 |    1301 |    1500
(5 rows)

Relational Algebra Expression:

Relational Algebra Tree:

Practice Online

Structure of employee Database:

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Previous: From the following tables, write a SQL query to find those employees work at SYDNEY or working in the FINANCE department with an annual salary above 28000, but the monthly salary should not be 3000 or 2800 and who do not work as a MANAGER and whose ID contain a digit of '3' or '7' in 3rd position. Sort the result-set in ascending order by department ID and descending order by job name. Return employee ID, employee name, salary, department name, department location, department ID, and job name.
Next: From the following table, write a SQL query to find those employees of grade 4 or 5 and who work as ANALYST or MANAGER. Return complete information about the employees.