SQL·parameter
engine loading
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학습 DB 기준선
3·3·4 rowsmember_id PK
name · email UNIQUE
mentor_id NULL 가능enrollment_id PK
member_id FK · course_id FK
status · completion_percent NULL 가능course_id PK
title
state-
member_id PK
name · email UNIQUE
mentor_id NULL 가능enrollment_id PK
member_id FK · course_id FK
status · completion_percent NULL 가능course_id PK
title
state----{}
시나리오를 고르고 예상 row 수를 먼저 말한 뒤 실행하세요.