This issue was automatically generated from a commit. **Committed Files:** - [프로그래머스/2/59410. NULL 처리하기/NULL 처리하기.sql](https://github.com/srlee056/algorithm-study/blob/main/프로그래머스/2/59410. NULL 처리하기/NULL 처리하기.sql) - [프로그래머스/2/59410. NULL 처리하기/README.md](https://github.com/srlee056/algorithm-study/blob/main/프로그래머스/2/59410. NULL 처리하기/README.md)
