Revature Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

A full outer join is a type of join used in SQL to combine rows from two tables based on a related column between them. The key characteristic of a full outer join is that it includes all records from both tables, regardless of whether there is a match between them.

When a full outer join is performed, it returns all the rows from the first table and all the rows from the second table. If a row from one table does not have a corresponding row in the other table, the result set will include that row and fill in the columns from the non-matching table with NULL values. This means it effectively shows all possible records from both tables, highlighting which records may not have corresponding matches.

In this scenario, the statement that it combines all records from both tables accurately captures the essence of a full outer join. It emphasizes the completeness of the data retrieved from both sources, making it a powerful choice when a comprehensive view of the data from two tables is required.