SQL Exercise: List the employees whose names contain AR together

SQL employee Database: Exercise-109 with Solution

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109. From the following table, write a SQL query to find those employees whose names contain the character set 'AR' together. Return complete information about the employees.

Sample table: employees

Sample Solution:

SELECT *
FROM employees
WHERE emp_name LIKE '%AR%';

Sample Output:

 emp_id | emp_name | job_name | manager_id | hire_date  | salary  | commission | dep_id
--------+----------+----------+------------+------------+---------+------------+--------
  67832 | CLARE    | MANAGER  |      68319 | 1991-06-09 | 2550.00 |            |   1001
  67858 | SCARLET  | ANALYST  |      65646 | 1997-04-19 | 3100.00 |            |   2001
  69324 | MARKER   | CLERK    |      67832 | 1992-01-23 | 1400.00 |            |   1001
(3 rows)

Explanation:

The said query in SQL that selects all columns from the 'employees' table where the "emp_name" column contains the characters "AR" anywhere within the string. The "%" symbol is a wildcard that matches any sequence of characters.

Relational Algebra Expression:

Relational Algebra Tree:

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Sample Database: employee

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