Cause: java.sql.SQLSyntaxErrorException: Unknown column 'stu_id' in 'field list'### The error may involve defaultParameterMap### SQL### Cause: java.sql.SQLSyntaxErrorException: U
如何提高一下查询语句查询速度:SUM(CASE WHEN hp.STUDENT_ID = cj.id THEN cj.fs else 0 END) zfFROM health_item hi,health_score hs AND hi.IS_SURVEY = 1 )cj,health_person hp