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SQL

HackerRank 해커랭크 SQL 예제 추가 풀이 (1)

1. https://www.hackerrank.com/challenges/revising-the-select-query-2/problem?isFullScreen=true Revising the Select Query II | HackerRank Query the city names for all American cities with populations larger than 120,000. www.hackerrank.com Q: Query the NAME field for all American cities in the CITY table with populations larger than 120000. The CountryCode for America is USA. The CITY table is de..

SQL

SELECT/FROM/LIMIT + 해커랭크 예제

모든 데이터 가져오기 SELECT * FROM 테이블명 예제: https://www.hackerrank.com/challenges/select-all-sql/problem?isFullScreen=true Select All | HackerRank Query all columns for every row in a table. www.hackerrank.com Q: Query all columns (attributes) for every row in the CITY table. The CITY table is described as follows: A: SELECT * FROM city !! 가독을 위해 명령어는 대문자로, 테이블명이나 칼럼명은 소문자로 써준다. 특정 칼럼의 데이터 가져오기 SELECT 칼럼..

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