SELECT a.id, a.user_id AS userId, a.content, a.status, a.create_time AS createTime, a.address, a.type, a.people_count AS peopleCount, a.fee_content AS feeContent, a.active_time AS activeTime, a.condition, a.pic, a.join_count, c.avatars AS initiatorAvatars, c.phone AS initiatorPhone, c.name As initiatorName FROM t_active a LEFT JOIN t_join_active b ON a.id = b.active_id LEFT JOIN t_user c ON a.user_id=c.id WHERE a.id=?
id是主键查询出两条相同的记录。
org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found: 2
报了这个错。
sql复制到数据库中查询,只有一条。请教是什么问题
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