Which command is used to filter records based on certain conditions?

The command that is used to filter records based on certain conditions is the WHERE clause. This clause allows you to specify specific criteria that the records must meet to be included in the result set of a SQL query. For example, if you want to select rows from a table where a certain column's value meets a specific condition (like being equal to a certain number, greater than a threshold, or matching a text string), the WHERE clause is the tool that enables you to do this.

The SELECT command itself is used to specify which columns to retrieve from a database. It defines what data you want to see, but it does not perform filtering; that's the role of the WHERE clause.

The HAVING clause is used to filter records after the aggregation process has taken place, which is different from filtering individual records directly like WHERE does. This is used typically with GROUP BY to filter groups of records.

JOIN operations are utilized to combine records from two or more tables based on related columns. While JOINs might allow you to bring together data from multiple sources, they do not filter records based on conditions in the same direct manner that the WHERE clause does.

Thus, the WHERE clause serves as the correct choice for specifying conditions to filter records from a dataset effectively.