SQL Exercise: List the employees who joined in the year 91
SQL employee Database: Exercise-42 with Solution
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42. From the following table, write a SQL query to find those employees who joined in the year 1991. Return complete information about the employees.
Sample table: employees
Pictorial Presentation:
Sample Solution:
SELECT *
FROM employees
WHERE hire_date BETWEEN '1991-01-01' AND '1991-12-31';
Sample Output:
emp_id | emp_name | job_name | manager_id | hire_date | salary | commission | dep_id --------+----------+-----------+------------+------------+---------+------------+-------- 68319 | KAYLING | PRESIDENT | | 1991-11-18 | 6000.00 | | 1001 66928 | BLAZE | MANAGER | 68319 | 1991-05-01 | 2750.00 | | 3001 67832 | CLARE | MANAGER | 68319 | 1991-06-09 | 2550.00 | | 1001 65646 | JONAS | MANAGER | 68319 | 1991-04-02 | 2957.00 | | 2001 69062 | FRANK | ANALYST | 65646 | 1991-12-03 | 3100.00 | | 2001 64989 | ADELYN | SALESMAN | 66928 | 1991-02-20 | 1700.00 | 400.00 | 3001 65271 | WADE | SALESMAN | 66928 | 1991-02-22 | 1350.00 | 600.00 | 3001 66564 | MADDEN | SALESMAN | 66928 | 1991-09-28 | 1350.00 | 1500.00 | 3001 68454 | TUCKER | SALESMAN | 66928 | 1991-09-08 | 1600.00 | 0.00 | 3001 69000 | JULIUS | CLERK | 66928 | 1991-12-03 | 1050.00 | | 3001 (10 rows)
Explanation:
The said query in SQL that selects all columns and rows from the 'employees' table where the "hire_date" column falls between the dates '1991-01-01' and '1991-12-31'. This would return a list of all employees who were hired in the year 1991.
The WHERE clause include all of those employees hired during the time '1991-01-01' and '1991-12-31'.
The "BETWEEN" operator is inclusive, so employees hired on December 31st, 1991 would be included in the results.
Relational Algebra Expression:
Relational Algebra Tree:
Practice Online
Sample Database: employee
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Previous SQL Exercise: All employees except those who joined in February.
Next SQL Exercise: List the employees who joined in June 1991.
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