我有如下的tableA，需要根据交易ID查找重叠的日期

同一交易ID的多个记录，需要查找是否有重叠的日期并返回这些记录

最佳答案

您可以尝试exists:

select t.*
from t
where exists (select 1
              from t t2
              where t2.transactionId = t.transactionId and
                    t2.enddate > t.startdate and
                    t2.startdate < t.enddate and
                    -- and not the same record
                    t2.startdate <> t.startdate and
                    t2.enddate <> t.enddate
             );

select t.*
from t join
     t t2
     on t2.transactionId = t.transactionId 
where t2.enddate > t.startdate and
      t2.startdate < t.enddate and
      t2.startdate <> t.startdate and
      t2.enddate <> t.enddate

https://stackoverflow.com/questions/55186971/