In today’s competitive job market, securing a role in database management is difficult. SQL (Structured Query Language) remains a fundamental skill for database administrators, software developers, ...
Leetcode has been an integral part of building confidence in SQL in my data analytics journey. Watching tutorial after tutorial won't get you far, I would suggest getting done with one introductory ...
After finishing all 102 LeetCode SQL questions, I feel it could be good to summarize all questions by topics. 182 Duplicate Emails Easy Soln. 511 Game Play Analysis I Easy Soln. 578 Get Highest Answer ...
Today I review two problems: 1. To see the business performance of a taxi company, I want to calculate the cancellation rate of requests with unbanned customers and drivers. In this problem, I use CTE ...
["2019-01-10", 130, 850], (130+110+140+150+80+110+130) Avg. 121.4, Sql is counting 8 without grouping should be 7 ["2019-01-10", 150, 870] (130+110+140+150+80+110+150) Avg. 124.2, Sql is counting 8 ...
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