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SQL Exercise: Employees retiring after 31-Dec-99 after 8 years

SQL employee Database: Exercise-30 with Solution

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30. From the following table, write a SQL query to identify those employees who retired after 31-Dec-99, completing eight years of service. Return employee name.

Sample table: employees


Pictorial Presentation:

SQL exercises on employee Database: List the employees who are retiring after 31-Dec-99 after completion of 8 years of service period

Sample Solution:

SELECT emp_name
FROM employees
WHERE hire_date + interval '96 months' > '1999-12-31';

Sample Output:

 emp_name     
--------------
  ADNRES      
  MARKER      
  SCARLET 
(3 rows)

Explanation:

The said query in SQL that selects the "emp_name" column from the "employees" table who were hired after December 31st, 1999.

The WHER clause filters the result set for the "hire_date" column plus 96 months (or 8 years) is greater than December 31st, 1999.

Practice Online


Sample Database: employee

employee database structure

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Previous SQL Exercise: Employees who earn more than 100 as daily salary.
Next SQL Exercise: List those employees whose salary is an odd value.

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SQL: Tips of the Day

Concatenate strings of a string field in a PostgreSQL 'group by' query:

Input:

ID   COMPANY_ID   EMPLOYEE
1    1            Anna
2    1            Bill
3    2            Carol
4    2            Dave

SELECT company_id, string_agg(employee, ', ')
FROM mytable
GROUP BY company_id;

Output:

COMPANY_ID   EMPLOYEE
1            Anna, Bill
2            Carol, Dave

Database: PostgreSQL

Ref: https://bit.ly/2XTiRjq

 

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