Can you show me the total number of problem logs?
select count ( * ) from problem_log
When was the oldest one created?
select log_entry_date from problem_log order by log_entry_date asc limit 1
How about the most recent one?
select log_entry_date from problem_log order by log_entry_date desc limit 1
What is its id?
select problem_log_id from problem_log order by log_entry_date desc limit 1