Sql 更新多值postgres

当我尝试使用此请求更新多行时，出现问题

update redux.rentalpivots tg
set (maxleasedatebymonth) = (select a.maxleasedatebymonth 
                             from redux.rental_latest_lease a,
                                  redux.rentalpivots b 
                             where a.surfaceid = b.surfaceid
                               and a.startdate = b.startdate
                               and b.enabled = TRUE 
                               and a.maxleasedatebymonth = b.leasestartdate
                               and tg.surfaceid = b.surfaceid
                               and tg.startdate = b.startdate 
                               and tg.enabled = b.enabled and b.surfaceid =  ?  )
 WHERE surfaceid = ?

这就是回报：

org.postgresql.util.PSQLException:错误：返回多行 由用作表达式的子查询执行

---

您可能想要一个相关的子查询。我不确定这是否能解决您的问题，但查询应该更像这样：

update redux.rentalpivots tg
    set maxleasedatebymonth = (select a.maxleasedatebymonth 
                               from redux.rental_latest_lease rll 
                               where rll.surfaceid = tg.surfaceid and
                                     rll.startdate = tg.startdate and
                                     rll.maxleasedatebymonth = tg.leasestartdate
                              )
     where tg.enabled and tg.surfaceid = ?;

如果仍然存在问题，可以通过向子查询添加

limit 1

来解决此问题

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这就是说，如果您认为只有一行应该匹配，而多行应该匹配，那么您应该找出原因并修复数据。

您可能正在寻找来自..的

更新语法，例如：

update redux.rentalpivots tg
  set maxleasedatebymonth = x.maxleasedatebymonth
from redux.rental_latest_lease a
where tg.surfaceid = a.surfaceid
  and tg.startdate = a.startdate 
  and tg.leasestartdate = a.maxleasedatebymonth 
  and tg.enabled
  and tg.surfaceid = ?;