报错如何看和解决Error updating database. Cause: java.sql.SQLException: Field 'course_id' doesn't have a def...

  前端控制台报错信息:     后端控制台报错信息: org.springframework.dao.DataIntegrityViolationException: ### Error updating database. Cause: java.sql.SQLException: Field 'course_id' doesn't have a default value ### The
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