What SQL query uses SELECT to retrieve an integer value?

The SQL SELECT statement is used to retrieve data, including integer values, from a database. Here's how you can use it:

To retrieve an integer value from a specific column in a table, you would use a query like this:

Example:

Assuming you have a table named employees with a column named employee_id of integer type, the query would be:

SELECT employee_id FROM employees WHERE employee_name = 'John Doe';

This query retrieves the employee_id (an integer) for the employee named 'John Doe' from the employees table.

If you want to retrieve a literal integer value directly, you can use:

SELECT 42;

This query will return a single column with the value 42. This is often used for testing or simple calculations within a query.

You can also perform calculations that result in an integer. For instance:

SELECT 5 7;

This query will return a single column with the value 35.

In summary, the SELECT statement is versatile and can be used to retrieve integer values either from a table column or as a result of a direct selection or calculation.

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