PostgreSQL Update Table: Update the salary of an employee with a new value for some specific employees in HR database
6. Write a SQL statement to change the salary of an employee to 8000 whose ID is 105, if the existing salary is less than 5000.
Sample table: employees
Sample Solution:
Code:
UPDATE employees SET SALARY = 8000
WHERE employee_id = 105
AND salary < 5000;
Output:
See the result. Only the effected rows have been displayed.
postgres=# SELECT * FROM employees WHERE SALARY = 8000 AND employee_id = 105; employee_id | first_name | last_name | email | phone_number | hire_date | job_id | salary | commission_pct | manager_id | department_id -------------+------------+-----------+---------+--------------+------------+---------+---------+----------------+------------+--------------- 105 | David | Austin | DAUSTIN | 590.423.4569 | 1987-06-22 | IT_PROG | 8000.00 | 0.00 | 103 | 60 (1 row)
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Previous: Write a SQL statement to change the email column of the employees table with 'not available' for those employees who belongs to the 'Accounting' department.
Next: Write a SQL statement to change the job ID of the employee which ID is 118 to SH_CLERK if the employee belongs to a department which ID is 30 and the existing job ID does not start with SH.
What is the difficulty level of this exercise?
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