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MySQL Exercise: Display the first_name of all employees who have both "b" and "c" in their first name

MySQL Restricting and Sorting Data: Exercise-5 with Solution

Write a query to display the first_name of all employees who have both "b" and "c" in their first name.

Sample table: employees


Code:

-- Selecting the first_name column
SELECT first_name
-- Selecting data from the employees table
FROM employees
-- Filtering the result set to include only rows where the first_name column contains both 'b' and 'c'
WHERE first_name LIKE '%b%'
AND first_name LIKE '%c%';

Explanation:

  • This SQL query selects the first_name column from the employees table.
  • The WHERE clause filters the result set to include only those rows where the first_name column contains both the letters 'b' and 'c'.
  • The % wildcard character is used with the LIKE operator to match any sequence of characters before and after 'b' and 'c' in the first_name column.
  • The AND logical operator is used to specify that both conditions must be true for a row to be included in the result set.
  • This query is useful when you want to retrieve employees whose first names contain both specified characters, such as finding employees with names like 'Bob' or 'Alice'.

Relational Algebra Expression:

Relational Algebra Expression: Restricting and Sorting Data: Display the first_name of all employees who have both.

Relational Algebra Tree:

Relational Algebra Tree: Basic SELECT statement: Restricting and Sorting Data: Display the first_name of all employees who have both.

Pictorial Presentation of the above query

Pictorial: Query to display the first_name of all employees who have both an

 

MySQL Code Editor:

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