Name: Missing, Duplicate, and Invalid Data - 누락된 데이터 처리하기
Uploaded: 2026-04-01T00:00:00Z
Description: You’ll learn how to write queries to solve common problems of missing, duplicate, and invalid data in the context of PostgreSQL database tables. Through hands-on exercises, you’ll use the COALESCE() function, SELECT query, and WHERE clause to clean messy data.