解决hibernate Subquery returns more than 1 row

使用hibernate时,发现一个错误:

        at java.lang.Thread.run(Thread.java:748)

Caused by: java.sql.SQLException: Subquery returns more than 1 row

        at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:54

 

SQL:

select
  inspection0_.houseInfo_id as col_0_0_,
  inspection0_.id as col_1_0_,
  inspection0_.agent_id as col_2_0_,
  (select
     distinct cooperatio2_.id
   from
     t_cooperationOrder cooperatio2_
   where
     cooperatio2_.primaryAgent_id=113
     and cooperatio2_.status>1
     and cooperatio2_.inspectionOrder_id=inspection0_.id ) as col_3_0_,
  houseinfo1_.id as id1_35_0_,
  inspection0_.id as id1_40_1_,
  houseinfo1_.address as address2_35_0_,
  houseinfo1_.agreeTotalPrice as agreeTot3_35_0_
from
  t_inspectionOrder inspection0_
  inner join
  t_houseInfo houseinfo1_
    on inspection0_.houseInfo_id=houseinfo1_.id
where
  (
    inspection0_.agent_id=113
    or 113 in (
      select
        cooperatio3_.secondaryAgent_id
      from
        t_cooperationOrder cooperatio3_
      where
        cooperatio3_.inspectionOrder_id=inspection0_.id
        and cooperatio3_.status>1
    )
  )
  and houseinfo1_.houseStatus=8
  and (
    inspection0_.status in (
      7 , 8
    )
  )
order by
  inspection0_.updateTime desc

 

解决方法:

以select * from table1 where table1.colums=(select columns from table2);这个sql语句为例。

1）如果是写入重复，去掉重复数据。然后写入的时候，可以加逻辑判断(php)或者外键(mysql)，防止数据重复写入。
   （我实际开发中遇到的就是数据重复写入的情况，在数据库查到有相同的数据两条，这不符原本的原本的业务需求）
2）在子查询条件语句加limit 1,找到一个符合条件的就可以了
select * from table1 where table1.colums=(select columns from table2 limit 1);
3）在子查询前加any关键字
select * from table1 where table1.colums=any(select columns from table2);

(4)select * from table1 where table1.colums=any(select max(columns) from table2);

参考:

https://hedleyproctor.com/2014/08/hibernate-query-limitations-and-correlated-sub-queries/

https://blog.csdn.net/LY_Dengle/article/details/78028166