Can the “having” clause be used on its own in an SQL statement?

The `HAVING` clause in SQL cannot be used on its own, it must be used together with the `GROUP BY` clause. `HAVING` is used to filter results after grouping, similar to how the `WHERE` clause filters raw data.

Typically, a `SELECT` statement with aggregate functions like `COUNT`, `SUM`, `AVG`, etc. is paired with a `GROUP BY` clause to group the query results. If further filtering is needed on the grouped results, the `HAVING` clause can be used.

Here is an example demonstrating the usage of the `HAVING` clause:

SELECT column1, column2, aggregate_function(column3)
FROM table
GROUP BY column1, column2
HAVING condition;

In the above examples, the `HAVING` clause follows the `GROUP BY` clause and is used to filter the grouped results based on specified conditions. It is important to note that conditions used in the `HAVING` clause can include aggregate functions and columns used for grouping.

In summary, the `HAVING` clause cannot be used alone; it must be used together with the `GROUP BY` clause to filter the results after grouping.