Top stories published by Data Science & LeetCode for Kindergarten in March of 2023

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Top Stories published by Data Science & LeetCode for Kindergarten in March of 2023

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2023

March

Sharko Shen in Data Science & LeetCode for Kindergarten

Mar 22, 2023

1581. Customer Who Visited but Did Not Make Any Transactions

Table: Visits

+-------------+---------+
| Column Name | Type    |
+-------------+---------+
| visit_id    | int     |
| customer_id | int     |
+-------------+---------+
visit_id is the primary key…

Sharko Shen in Data Science & LeetCode for Kindergarten

Mar 23, 2023

1141. User Activity for the Past 30 Days I

Table: Activity

+---------------+---------+
| Column Name   | Type    |
+---------------+---------+
| user_id       | int     |
| session_id    | int     |
| activity_date | date    |
| activity_type | enum    |…

Sharko Shen in Data Science & LeetCode for Kindergarten

Mar 22, 2023

1148. Article Views I

Table: Views

+---------------+---------+
| Column Name   | Type    |
+---------------+---------+
| article_id    | int     |
| author_id     | int     |
| viewer_id     | int     |
| view_date     | date    |
+---------------+---------+
There is no primary key for…

Sharko Shen in Data Science & LeetCode for Kindergarten

Mar 26, 2023

1407. Top Travellers

Table: Users

+---------------+---------+
| Column Name   | Type    |
+---------------+---------+
| id            | int     |
| name          | varchar |
+---------------+---------+
id is the primary key for this table.
name is the name of the user.

Sharko Shen in Data Science & LeetCode for Kindergarten

Mar 23, 2023

607. Sales Person

Table: SalesPerson

+-----------------+---------+
| Column Name     | Type    |
+-----------------+---------+
| sales_id        | int     |
| name            | varchar |
| salary          | int     |
| commission_rate | int     |
| hire_date       | date    |…

Sharko Shen in Data Science & LeetCode for Kindergarten

Mar 27, 2023

1084. Sales Analysis III

Table: Product

+--------------+---------+
| Column Name  | Type    |
+--------------+---------+
| product_id   | int     |
| product_name | varchar |
| unit_price   | int     |
+--------------+---------+
product_id is the primary key of this table.
Each row…

Sharko Shen in Data Science & LeetCode for Kindergarten

Mar 20, 2023

論BlackPink買票跟風

新聞:

BLACKPINK開唱爆「特權跟風亂象」她揭內幕：在台灣當粉絲很可憐

Sharko Shen in Data Science & LeetCode for Kindergarten

Mar 21, 2023

1965. Employees With Missing Information

Table: Employees

+-------------+---------+
| Column Name | Type    |
+-------------+---------+
| employee_id | int     |
| name        | varchar |
+-------------+---------+
employee_id is the primary key for this table.
Each row of…

Sharko Shen in Data Science & LeetCode for Kindergarten

Mar 21, 2023

1527. Patients With a Condition

Table: Patients

+--------------+---------+
| Column Name  | Type    |
+--------------+---------+
| patient_id   | int     |
| patient_name | varchar |
| conditions   | varchar |
+--------------+---------+
patient_id is the primary key for this…

Sharko Shen in Data Science & LeetCode for Kindergarten

Mar 22, 2023

608. Tree Node

Table: Tree

+-------------+------+
| Column Name | Type |
+-------------+------+
| id          | int  |
|…

April 2023

These were the top 10 stories published by Data Science & LeetCode for Kindergarten in March of 2023. You can also dive into daily archives for March of 2023 by using the calendar at the top of this page.

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