Question

任何帮助都会如此令人难以置信地受到赞赏。我试图从一组表中选择最后一个活动日期。表格包括进入日期，注释日期，付款日期和索赔日期。我想只返回所有这些日期的最大值。此外，我只想要记录超过45天没有活动的记录。我目前正在使用以下SQL来引入所有日期，然后使用EXCEL中的计算字段来计算其余的日期。是否可以使用SQL执行此操作？

提前致谢。

SELECT xrxTrnLgr.PatId, xrxTrnLgr.Balance, 
       Max(xrxPatNotes.NoteDate) AS 'Max of NoteDate', 
       Max(xrxTrnIcf.PostDate) AS 'Max of IcfPostDate', 
       Max(xrxPat.EntryDate) AS 'Entry Date', 
       Max(xrxPat.Coverage) AS 'Coverage', 
       Max(xrxTrnPay.PostDate) AS 'Last Payment'
  FROM  xrxTrnLgr 
  LEFT OUTER JOIN xrxPatNotes ON xrxTrnLgr.PatId = xrxPatNotes.PatId
  LEFT OUTER JOIN  xrxTrnIcf ON xrxTrnLgr.PatId = xrxTrnIcf.PatId
  LEFT OUTER JOIN xrxPat ON xrxTrnLgr.PatId = xrxPat.PatId
  LEFT OUTER JOIN xrxTrnPay ON xrxTrnLgr.PatId = xrxTrnPay.PatId
  GROUP BY xrxTrnLgr.PatId, xrxTrnLgr.Balance
  HAVING (xrxTrnLgr.Balance>$.01)

Answer 1

我认为这可能会在SQL中完成：

select t.patid, t.balance,
       max(case when which = 'note' then thedate end) as note,
       max(case when which = 'post' then thedate end) as post,
       max(case when which = 'entry' then thedate end) as entry,
       max(case when which = 'coverage' then thedate end) as coverage,
       max(case when which = 'lastPayment' then thedate end) as lastPayment
from xrxTrnLgr t left join
     ((select patid, notedate as thedate, 'note' as which
       from xrxPatNotes
      ) union all
      (select patid, postdate, 'post'
       from xrxtrnIcf
      ) union all
      (select patid, EntryDate, 'entry'
       from xrxPat
      ) union all
      (select paid, Coverage, 'coverage'
       from xrxPat.Coverage
      ) union all
      (select patid, PostDate, 'LastPayment'
       from xrxTrnPay.PostDate
      ) 
    ) d
    on t.patid = d.patid
group by t.patid, t.balance
having min(now() - thedate) >= 45

从多个表中选择最大日期

1 个答案: