[1364#_MEIDUM] Number of Trusted Contacts of a Customer
·
SQL/leetcode
보호되어 있는 글입니다.
[1355#_MEDIUM]. Activity Participants
·
SQL/leetcode
보호되어 있는 글입니다.
[1978#_EASY] Employees Whose Manager Left the Company
·
SQL/leetcode
보호되어 있는 글입니다.
[1965_EASY] Employees With Missing Information
·
SQL/leetcode
Employees With Missing Information - LeetCode Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview. leetcode.com Table: Employees +-------------+---------+ | Column Name | Type | +-------------+---------+ | employee_id | int | | name | varchar | +-------------+---------+ employee_id is the primary key for thi..
[1939#_EASY] Users That Actively Request Confirmation Messages
·
SQL/leetcode
보호되어 있는 글입니다.
[1341#_MEDIUM] Movie Rating
·
SQL/leetcode
Table: Movies +---------------+---------+ | Column Name | Type | +---------------+---------+ | movie_id | int | | title | varchar | +---------------+---------+ movie_id is the primary key for this table. title is the name of the movie. Table: Users +---------------+---------+ | Column Name | Type | +---------------+---------+ | user_id | int | | name | varchar | +---------------+---------+ user_..
[1321#_MEDIUM] Restaurant Growth
·
SQL/leetcode
Table: Customer +---------------+---------+ | Column Name | Type | +---------------+---------+ | customer_id | int | | name | varchar | | visited_on | date | | amount | int | +---------------+---------+ (customer_id, visited_on) is the primary key for this table. This table contains data about customer transactions in a restaurant. visited_on is the date on which the customer with ID (customer_i..
[1890_EASY] The Latest Login in 2020
·
SQL/leetcode
Table: Logins +----------------+----------+ | Column Name | Type | +----------------+----------+ | user_id | int | | time_stamp | datetime | +----------------+----------+ (user_id, time_stamp) is the primary key for this table. Each row contains information about the login time for the user with ID user_id. Write an SQL query to report the latest login for all users in the year 2020. Do not incl..