찾은 사람이 가져가는 법? 데이터베이스를 다룰 때는 데이터를 데이터를 삽입하는 것보다 . 이 장에서는 강력한 SELECT 문을 자세히 살펴보고, 테이블에 저장해 둔 중요한 정보에 접근하는 방법 에 접근하는 방법을 배우게 될 것입니다. 또한 필요한 데이터만 선택적으로 가져오고 필요 없는 행이 표시되지 않도록 도와주는 WHERE 절도 만나보게 될 것입니다. 자, 그럼 시작해 볼까요? SQL 데이터를 찾아봅시다.
목적지 검색하기
애비는 차로 갈 수 있는 장소를 찾아야 하므로, 2장에서 배 운 SELECT 문을 사용하여 테이블을 확인해 봅니다.
정말 그랬죠.
그 * 기호는 모든 데이터를 반환합니다.
그 작업은 너무 오래 시간이 훨씬더 오래 걸렸고 지루했죠 ...
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