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ror_coding

기존 코드도 좋지만, window function의 연산 범위를 잘 익혀야 한다! Question You are the restaurant owner and you want to analyze a possible expansion (there will be at least one customer every day).Compute the moving average of how much the customer paid in a seven days window (i.e., current day + 6 days before). average_amount should be rounded to two decimal places.Return the result table ordered by visited_on in ..
Coding Test/SQL
2025. 7. 19. 14:41