Question

我想问一下如何使用tickerID输出一列。

截至目前，我有以下内容：

select distinct 
    mtime,  
    avg(lastBid) Bid ,
    avg(lastAsk) Ask 
from 
    (Select 
         a.mtime, a.IntradayTime, f.lastBid, f.lastAsk 
     from 
         (select 
              cte.*, 
              (select top 1 datetime 
               from IntradayHistory_1min.dbo.IntradayDataHistory' + @product + '_1min' + ' 
               where datetime <= cte.mtime 
                 and TickerID = ' + cast(@ticker as nvarchar(24)) + ' 
               order by datetime desc) as IntradayTime 
          from 
              cte) a 
    left join 
        Intradayhistory_1min.dbo.IntradayDataHistory'+ @product + '_1min' + ' f on f.datetime = a.IntradayTime and f.tickerid = ' + cast(@ticker as nvarchar(24)) + ') b 
group by 
    mtime 
order by 
    mtime 
option (maxrecursion 0)

dbo.IntradayDataHistory_Rebar_1min的屏幕截图（在这种情况下：Rebar是@product）：

已更新以澄清：输出看起来像这样，

我也尝试过以下操作，但是没有用：

select distinct mtime,
(ticker) tickerid
avg(lastBid) Bid ,
avg(lastAsk) Ask 

from ( Select a.mtime, a.IntradayTime, f.tickerid, f.lastBid, f.lastAsk 
from (select cte.*, (select top 1 datetime from IntradayHistory_1min.dbo.IntradayDataHistory' + @product + '_1min' + ' 
where datetime <= cte.mtime and TickerID = ' + cast(@ticker as nvarchar(24)) + ' order by datetime desc) as IntradayTime from cte ) a 
left join Intradayhistory_1min.dbo.IntradayDataHistory'+ @product + '_1min' + ' f 

on f.datetime = a.IntradayTime and f.tickerid = ' + cast(@ticker as nvarchar(24)) + ' ) b 
group by mtime order by mtime option (maxrecursion 0)

我得到的错误：

列'b.tickerid'在选择列表中无效，因为它不包含在聚合函数或GROUP BY子句中。

Answer 1

我发现解决方案是在ticker前面添加一个avg函数，如下所示：

select distinct mtime,
avg(ticker) tickerid
avg(lastBid) Bid ,
avg(lastAsk) Ask 

from ( Select a.mtime, a.IntradayTime, f.tickerid, f.lastBid, f.lastAsk 
from (select cte.*, (select top 1 datetime from IntradayHistory_1min.dbo.IntradayDataHistory' + @product + '_1min' + ' 
where datetime <= cte.mtime and TickerID = ' + cast(@ticker as nvarchar(24)) + ' order by datetime desc) as IntradayTime from cte ) a 
left join Intradayhistory_1min.dbo.IntradayDataHistory'+ @product + '_1min' + ' f 

on f.datetime = a.IntradayTime and f.tickerid = ' + cast(@ticker as nvarchar(24)) + ' ) b 
group by mtime order by mtime option (maxrecursion 0)

背后的原因在于：Column "invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause"

复杂查询的输出列

1 个答案: