Find Books with Polarized Opinions (LeetCode 3642)
MediumLeetCode 3642 · Count & sum per group · 12:22Leetcode 3642 - Using SUM to COUNT in SQL - Books with Polarized Opinions · Everyday Data ScienceMy notes
Sign in to keep private notes on every station, with video timestamps.
Pause here and write your approach in two lines. Compare it with MIK's when the video ends.
Sign in to write your approach →About this video
Video solution for LeetCode 3642 Find Books with Polarized Opinions by Everyday Data Science: Aggregation & GROUP BY, Medium. Watch the explanation, then solve it on LeetCode.
- Difficulty
- medium
- Patterns
- Count & sum per group
- Chapter
- Aggregation & GROUP BY
- Duration
- 12:22
Related problems
- Customer Placing the Largest Number of Orders (LeetCode 586)
- Number of Comments per Post (LeetCode 1241)
- Daily Leads and Partners (LeetCode 1693)
- Find Total Time Spent by Each Employee (LeetCode 1741)
- The Number of Rich Customers (LeetCode 2082)
- Primary Department for Each Employee (LeetCode 1789)
- Find Followers Count (LeetCode 1729)
- Number of Unique Subjects Taught by Each Teacher (LeetCode 2356)