Frederik Müller

HARD Uber SQL Interview Question: Maximum Number of Employees Reached (StrataScratch 2046)

HARD Apple/Microsoft SQL Interview Question: New And Existing Users (StrataScratch 2028)

HARD Meta SQL Interview Question: Rank Variance Per Country (StrataScratch 2007)

HARD Amazon SQL Interview Question: Marketing Campaign Success [Advanced] (StrataScratch 514)

LeetCode 1321: Restaurant Growth [SQL]

LeetCode 585: Investments in 2016 [SQL]

LeetCode 602: Friend Requests II: Who Has the Most Friends [SQL]

LeetCode 1517: Find Users With Valid E-Mails [SQL]

LeetCode 1327: List the Products Ordered in a Period [SQL]

LeetCode 1484: Group Sold Products By The Date [SQL]

LeetCode 1527: Patients With a Condition [SQL]

LeetCode 1667: Fix Names in a Table [SQL]

LeetCode 1341: Movie Rating [SQL]

LeetCode 1164: Product Price at a Given Date [SQL]

LeetCode 1789: Primary Department for Each Employee [SQL]

LeetCode 1731: The Number of Employees Which Report to Each Employee [SQL]

LeetCode 1045: Customers Who Bought All Products [SQL]

LeetCode 619: Biggest Single Number [SQL]

LeetCode 1729: Find Followers Count [SQL]

LeetCode 1141: User Activity for the Past 30 Days I

LeetCode 1174: Immediate Food Delivery II

LeetCode 1193: Monthly Transactions I

LeetCode 1211: Качество и процент запросов

LeetCode 1075: Project Employees I

LeetCode 1251: Средняя цена продажи

LeetCode 1280: Студенты и экзамены

LeetCode 1378: Заменить идентификатор сотрудника уникальным идентификатором

*HARD* IBM SQL Interview Question (StrataScratch 10538)

LeetCode 1907: Count Salary Categories [SQL]

LeetCode 1683: Invalid Tweets [SQL]