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SQL exercises on employee Database: List the employees who joined before 1991

SQL employee Database: Exercise-12 with Solution

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12. From the following table, write a SQL query to find those employees who joined before 1991. Return complete information about the employees.

Sample table: employees


Pictorial Presentation:

SQL exercises on employee Database: List the employees who joined before 1991

Sample Solution:

SELECT *
FROM employees
WHERE hire_date<('1991-1-1');

Sample Output:

 emp_id | emp_name | job_name | manager_id | hire_date  | salary | commission | dep_id
--------+----------+----------+------------+------------+--------+------------+--------
  63679 | SANDRINE | CLERK    |      69062 | 1990-12-18 | 900.00 |            |   2001
(1 row)

Relational Algebra Expression:

Relational Algebra Expression: List the employees who joined before 1991.

Relational Algebra Tree:

Relational Algebra Tree: List the employees who joined before 1991.

Practice Online


Sample Database: employee

employee database structure

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Previous: From the following table, write a SQL query to find those employees who do not belong to the department 2001. Return complete information about the employees.
Next: From the following table, write a SQL query to compute the average salary of those employees who work as ‘ANALYST’. Return average salary.

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