SQL(35)
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[HackerRank] Japanese Cities' Names
Query the names of all the Japanese cities in the CITY table. The COUNTRYCODE for Japan is JPN. The CITY table is described as follows: SELECT NAME FROM CITY WHERE COUNTRYCODE = 'JPN';
2021.01.19 -
[HackerRank] Select By ID
Query all columns for a city in CITY with the ID 1661. The CITY table is described as follows: SELECT * FROM CITY WHERE ID = '1661';
2021.01.19 -
[HackerRank] Select All
Query all columns (attributes) for every row in the CITY table. The CITY table is described as follows: SELECT * FROM CITY
2021.01.19 -
[HackerRank] Revising the Select Query II
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 described as follows: SELECT NAME FROM CITY WHERE POPULATION > 120000 AND COUNTRYCODE = 'USA' ;
2021.01.19 -
[HackerRank] Revising the Select Query I
Query all columns for all American cities in the CITY table with populations larger than 100000. The CountryCode for America is USA. The CITY table is described as follows: SELECT * FROM CITY WHERE COUNTRYCODE = 'USA' AND POPULATION > 100000
2021.01.19 -
프로그래머스 String, Date 문제풀이
루시와 엘라 찾기 이름에 el이 들어가는 동물 찾기 중성화 여부 파악하기 오랜 기간 보호한 동물(2) DATETIME에서 DATE로 형 변환
2021.01.18