Snowflake SnowPro Certification Practice Test

What does SELECT last_query_id() return?

1. The identifier of the most recent query executed

2. The identifier of the first query executed

3. The identifier of the last query in any session

4. The identifier of all queries executed

The correct answer is: The identifier of the most recent query executed

The function last_query_id() returns the unique identifier of the most recently executed query within the context of the current session. This allows users to track and manage the queries they have run, particularly useful for debugging or logging purposes. This response is specific to the session context, highlighting that it pertains only to the last query executed by that particular session, which makes it focused and relevant when determining the impact or results of that query. The ability to access the ID of the last executed query can be important for performance monitoring, error handling, and understanding the flow of operations in a Snowflake session. The other options suggest broader or different scopes of query identification that do not align with the functionality of last_query_id(), which specifically targets the last executed query in the current session rather than any other queries, whether they are the first, last in general, or all executed queries.