SQLite Exercise: Display the names, salary and PF (15% of salary) of all employees
Write a query to display the names (first_name, last_name), salary and PF (15% of salary) of all employees.
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 "first_name," "last_name," "salary," and calculating a 15% performance bonus (PF)
SELECT first_name, last_name, salary, salary * 0.15 PF
-- Specifying the table from which to retrieve the data, in this case, "employees"
FROM employees;
Output:
first_name last_name salary PF ---------- ---------- ---------- ---------- Steven King 24000 3600.0 Neena Kochhar 17000 2550.0 Lex De Haan 17000 2550.0 Alexander Hunold 9000 1350.0 Bruce Ernst 6000 900.0 .... ... ... ... Pat Fay 6000 900.0 Susan Mavris 6500 975.0 Hermann Baer 10000 1500.0 Shelley Higgins 12000 1800.0 William Gietz 8300 1245.0
Explanation:
The above SQLite query retrieves the "first_name," "last_name," and "salary" columns from the "employees" table. Additionally, it calculates a performance bonus (PF) for each employee by multiplying their salary by 0.15 (15%). The result is presented in the result set with the alias 'PF'.
Here's a brief explanation of each part of SQLite code:
- SELECT clause:
- It selects the "first_name," "last_name," and "salary" columns from the "employees" table.
- Expressions in the SELECT clause:
- It calculates a performance bonus (PF) by multiplying the "salary" column by 0.15 (15%).
- FROM clause:
- Specifies the table from which to retrieve the data, in this case, the "employees" table.
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Model Database
Structure of 'hr' database :
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