一般是字段映射或者JPA的配置问题，认真检查实体或者父类有哪些字段和数据库没有映射到；参考文档：https://www.cnblogs.com/qingmuchuanqi48/p/11986685.html
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Caused by: org.hibernate.exception.SQLGrammarException: could not extract ResultSet
could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet
Exception occurred during processing request: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet
报错org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet"
Hibernate: org.hibernate.exception.SQLGrammarException: could not insert: 错误
nested exception is org.hibernate.exception.SQLGrammarException
解决org.hibernate.exception.SQLGrammarException:could not insert
Java EE 之 Hibernate异常总结【4】org.hibernate.exception.SQLGrammarException: could not execute statement
org.hibernate.exception.SQLGrammarException: could not execute query 没有找到数据库
Could not open JPA EntityManager for transaction; nested exception is javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: Cannot open connection