📌 Python의 * (Unpacking 연산자)*는 Python의 Iterable Unpacking(언패킹) 문법입니다. 리스트나 튜플의 요소들을 "풀어서" 개별 인자로 전달합니다.🎯 간단한 예시# 리스트 정의fruits = ["apple", "banana", "cherry"]# * 없이 전달print(fruits) # 출력: ['apple', 'banana', 'cherry'] (리스트 자체)# * 사용해서 언패킹print(*fruits) # 출력: apple banana cherry (개별 요소로 풀림) 📋 코드에서의 사용 예시1️⃣ selectExpr에서 사용 COMMON_DIMS = ["event_date", "game_code", "device", "pl..
문제Table: Movies+---------------+---------+| Column Name | Type |+---------------+---------+| movie_id | int || title | varchar |+---------------+---------+movie_id is the primary key (column with unique values) for this table.title is the name of the movie.Each movie has a unique title.Table: Users+---------------+---------+| Column Name | Type |+---------------+------..
문제+-------------+---------+| Column Name | Type |+-------------+---------+| id | int || student | varchar |+-------------+---------+id is the primary key (unique value) column for this table.Each row of this table indicates the name and the ID of a student.The ID sequence always starts from 1 and increments continuously. Write a solution to swap the seat id of every two conse..
문제+-------------+---------+| Column Name | Type |+-------------+---------+| person_id | int || person_name | varchar || weight | int || turn | int |+-------------+---------+person_id column contains unique values.This table has the information about all people waiting for a bus.The person_id and turn columns will contain all numbers from 1 to n, where n is the number..
문제Table: Products+---------------+---------+| Column Name | Type |+---------------+---------+| product_id | int || new_price | int || change_date | date |+---------------+---------+(product_id, change_date) is the primary key (combination of columns with unique values) of this table.Each row of this table indicates that the price of some product was changed to a new pric..