SQL Exercise: List the employees whose names contain AR together
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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:
Practice Online
Sample Database: employee
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