Data Engineer 면접 질문과 답변
Question: How do you optimize SQL queries for better performance?Answer: Optimizing SQL queries involves using indexes, avoiding SELECT * queries, and optimizing JOIN operations. Additionally, proper database design and indexing are crucial.Example:
|
복습용 저장
이 항목을 북마크하거나, 어렵게 표시하거나, 복습 세트에 넣을 수 있습니다.
도움이 되었나요? 예 아니요
Most helpful rated by users:
- What is a schema in the context of databases?
- Explain the concept of ETL in the context of data engineering.