IntelliJ

• org.springframework.jdbc.BadSqlGrammarException:
• ### Error querying database. Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'from board
  where bno = 467' at line 4
• ### The error may exist in file [\ch4\target\ch4-1.0.0-BUILD-SNAPSHOT\WEB-INF\classes\mapper\boardMapper.xml]
• ### The error may involve com.fastcampus.ch4.dao.BoardMapper.select-Inline
• ### The error occurred while setting parameters

✊🏻문제 원인

Cause: java.lang.IllegalArgumentException: Mapped Statements collection already contains value for com.fastcampus.ch4.dao.BoardMapper.select. please check file

mapper에 중복되는 id가 존재하여 에러 발생

✨해결 방법

Mapper에서 중복된 id 제거