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SOLVING BUSINESS PROBLEMS USING SQL: A DEFINITIVE GUIDE …
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What I have learned by solving (almost) all the SQL problems in ...
WebApr 7, 2024 · This portion of the interview tasks you with solving real-world problems using SQL. While you may be asked some definitional questions more typical of a standard interview, the real point here is for the interviewer to verify that you can actually use SQL, not just talk about it. These screenings typically take one of three forms: 1. WebJul 6, 2024 · The following is the breakdown of SQL skills tested in every question: Q1 Average Salary: CTE, Aggregates in Window functions, CASE WHEN, Date functions such … WebFeb 26, 2024 · The steps we need are: Create a CTE; Use LAG () to create a column with sales from the previous month; On the outer query, perform the calculation, using … fly guy stories