sql/mystery.sql: solution (and spoilers) for https://mystery.knightlab.com/
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--
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-- Steps taken to solve https://mystery.knightlab.com/
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--
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SELECT description
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FROM crime_scene_report
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WHERE type = "murder"
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AND city = "SQL City"
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AND date = 20180115
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;
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--
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-- Security footage shows that there were 2 witnesses. The first witness lives
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-- at the last house on "Northwestern Dr". The second witness, named Annabel,
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-- lives somewhere on "Franklin Ave".
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--
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SELECT id, name, license_id, address_number, ssn
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FROM person
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WHERE name LIKE 'Annabel %'
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;
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--
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-- 16371 Annabel Miller 490173 103 318771143
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--
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SELECT transcript
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FROM interview
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WHERE person_id = 16371
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;
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--
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-- I saw the murder happen, and I recognized the killer from my gym when I was
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-- working out last week on January the 9th.
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--
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SELECT id, name, license_id, address_number, ssn
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FROM person
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WHERE address_street_name = "Northwestern Dr"
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ORDER BY address_number DESC
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LIMIT 1
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;
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--
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-- 14887 Morty Schapiro 118009 4919 111564949
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--
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SELECT transcript
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FROM interview
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WHERE person_id = 14887
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;
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--
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-- I heard a gunshot and then saw a man run out. He had a "Get Fit Now Gym" bag.
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-- The membership number on the bag started with "48Z". Only gold members have
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-- those bags. The man got into a car with a plate that included "H42W".
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--
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SELECT person.name
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FROM person
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JOIN drivers_license
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ON person.license_id = drivers_license.id
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WHERE drivers_license.plate_number LIKE 'H42W%'
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;
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--
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-- Maxine Whitely
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--
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SELECT id, name
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FROM get_fit_now_member
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WHERE membership_status = 'gold'
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AND id LIKE '48Z%'
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;
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--
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-- 48Z7A Joe Germuska
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-- 48Z55 Jeremy Bowers
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--
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SELECT person.name, interview.transcript
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FROM interview
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JOIN person
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ON interview.person_id = person.id
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WHERE person.name IN ('Jeremy Bowers', 'Joe Germuska')
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;
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--
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-- Jeremy Bowers I was hired by a woman with a lot of money. I don't know her
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-- name but I know she's around 5'5" (65") or 5'7" (67"). She has red hair and
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-- she drives a Tesla Model S. I know that she attended the SQL Symphony Concert
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-- 3 times in December 2017.
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--
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SELECT person.name
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FROM drivers_license
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AS dl
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JOIN person
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ON dl.id = person.license_id
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WHERE dl.height BETWEEN 64 AND 67
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AND dl.hair_color = 'red'
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AND dl.car_make = 'Tesla'
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AND dl.car_model = 'Model S'
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AND dl.gender = 'female'
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;
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--
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-- Red Korb
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-- Regina George
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-- Miranda Priestly
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--
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SELECT person.name, COUNT(person.name) AS visits
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FROM facebook_event_checkin
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AS event
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JOIN person
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ON event.person_id = person.id
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WHERE event.date BETWEEN 20171201 AND 20171231
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AND event.event_name = 'SQL Symphony Concert'
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AND person.name IN ('Red Korb', 'Regina George', 'Miranda Priestly')
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GROUP BY person.name
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;
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--
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-- Miranda Priestly 3
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--
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INSERT INTO solution
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VALUES (1, 'Miranda Priestly')
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;
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SELECT value
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FROM solution
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;
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--
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-- Congrats, you found the brains behind the murder! Everyone in SQL City hails
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-- you as the greatest SQL detective of all time. Time to break out the
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-- champagne!
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--
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