SQLite Exercise: Get job ID and maximum salary of the employees where maximum salary is greater than or equal to $4000
Write a query to get the job ID and maximum salary of the employees where maximum salary is greater than or equal to $4000.
Sample table : employees
+-------------+-------------+-------------+----------+--------------------+------------+------------+----------+----------------+------------+---------------+ | EMPLOYEE_ID | FIRST_NAME | LAST_NAME | EMAIL | PHONE_NUMBER | HIRE_DATE | JOB_ID | SALARY | COMMISSION_PCT | MANAGER_ID | DEPARTMENT_ID | +-------------+-------------+-------------+----------+--------------------+------------+------------+----------+----------------+------------+---------------+ | 100 | Steven | King | SKING | 515.123.4567 | 1987-06-17 | AD_PRES | 24000.00 | 0.00 | 0 | 90 | | 101 | Neena | Kochhar | NKOCHHAR | 515.123.4568 | 1987-06-18 | AD_VP | 17000.00 | 0.00 | 100 | 90 | | 102 | Lex | De Haan | LDEHAAN | 515.123.4569 | 1987-06-19 | AD_VP | 17000.00 | 0.00 | 100 | 90 | | 103 | Alexander | Hunold | AHUNOLD | 590.423.4567 | 1987-06-20 | IT_PROG | 9000.00 | 0.00 | 102 | 60 | | 104 | Bruce | Ernst | BERNST | 590.423.4568 | 1987-06-21 | IT_PROG | 6000.00 | 0.00 | 103 | 60 | | 105 | David | Austin | DAUSTIN | 590.423.4569 | 1987-06-22 | IT_PROG | 4800.00 | 0.00 | 103 | 60 | | 106 | Valli | Pataballa | VPATABAL | 590.423.4560 | 1987-06-23 | IT_PROG | 4800.00 | 0.00 | 103 | 60 | | 107 | Diana | Lorentz | DLORENTZ | 590.423.5567 | 1987-06-24 | IT_PROG | 4200.00 | 0.00 | 103 | 60 | | 108 | Nancy | Greenberg | NGREENBE | 515.124.4569 | 1987-06-25 | FI_MGR | 12000.00 | 0.00 | 101 | 100 | | 109 | Daniel | Faviet | DFAVIET | 515.124.4169 | 1987-06-26 | FI_ACCOUNT | 9000.00 | 0.00 | 108 | 100 | ........... | 206 | William | Gietz | WGIETZ | 515.123.8181 | 1987-10-01 | AC_ACCOUNT | 8300.00 | 0.00 | 205 | 110 | +-------------+-------------+-------------+----------+--------------------+------------+------------+----------+----------------+------------+---------------+
SQLite Code:
-- Selecting the "job_id" and the maximum salary for each job
SELECT job_id, MAX(salary)
-- Specifying the table from which to retrieve the data, in this case, "employees"
FROM employees
-- Grouping the results by the "job_id" column
GROUP BY job_id
-- Filtering the grouped results to include only those with a maximum salary greater than or equal to 4000
HAVING MAX(salary) >= 4000;
Output:
job_id MAX(salary) ---------- ----------- AC_ACCOUNT 8300 AC_MGR 12000 AD_ASST 4400 AD_PRES 24000 AD_VP 17000 FI_ACCOUNT 9000 FI_MGR 12000 HR_REP 6500 IT_PROG 9000 MK_MAN 13000 MK_REP 6000 PR_REP 10000 PU_MAN 11000 SA_MAN 14000 SA_REP 11500 SH_CLERK 4200 ST_MAN 8200
Explanation:
The above SQLite query retrieves the "job_id" and aggregates various salary statistics for each job in the "employees" table, considering only those in department 90. The results are grouped by the "job_id" column.
Here's a brief explanation of each part of SQLite code:
- SELECT clause:
- It selects the "job_id" column.
- It calculates the maximum salary for each job using the MAX function.
- FROM clause:
- Specifies the table from which to retrieve the data, in this case, the "employees" table.
- GROUP BY clause:
- Groups the results by the "job_id" column. This means that the maximum salary is calculated separately for each unique job.
- HAVING clause:
- Filters the grouped results to include only those groups (jobs) where the maximum salary is greater than or equal to 4000.
Go to:
PREV : Write a query to get the total salary, maximum, minimum, average salary of employees (job ID wise), for department ID 90 only.
NEXT : Write a query to get the average salary for all departments employing more than 10 employees.
Practice SQLite Online
Model Database
Structure of 'hr' database :
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