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Question

我尝试了以下查询来显示数据

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<html>
    <body>
        <table class="EventLogGrid" style="padding: 0px; ">
            <tr>
                <th>
                    Event Type
                </th>
    
                <th>
                    Event Description
                </th>
                <th>
                    Revision
                </th>
    
                <th>
                    Version
                </th>
                <th>
                    Log By
                </th>
    
                <th>
                    Log Date
                </th>
                <th>
                    Organization Name
                </th>
                <th>
                    Document Owner Organization
                </th>
            </tr>
    
            @foreach (var item in Model.eventLogData)
            {
                <tr>
                    <td>
                        @Html.DisplayFor(modelItem => item.EventType)
                    </td>
    
    
                    <td>
                        @item.EventDescription
                    </td>
                    <td>
                        @Html.DisplayFor(modelItem => item.Revision)
                    </td>
    
                    <td>
                        @Html.DisplayFor(modelItem => item.DocVersion)
                    </td>
                    <td>
                        @Html.DisplayFor(modelItem => item.LogBy)
                    </td>
                    <td>
                        @Html.DisplayFor(modelItem => item.LogDate)
                    </td>
                    <td>
                        @Html.DisplayFor(modelItem => item.OrganizationName)
                    </td>
                    <td>
                        @Html.DisplayFor(modelItem => item.DocumetOwnerOrganizationName)
                    </td>
                </tr>
            }
        </table>
      
    
    </body>
    </html>

我得到的数据是这样的 -

select  e.Name,ic.Code,t1.pyear,t1.pmonth,t2.Amount     
from t1 
inner join t2 on t2.id=t1.id
inner join t3  on t3.Code=t2.Code
inner join t4 e on t4.employeeindex=t1.employeeindex 
where t1.pyear=2016 and t1.pmonth=1

union all 

select  e.Name,ic.Code,t1.pyear,t1.pmonth,t2.Amount     
from t1 
inner join t2 on t2.id=t1.id
inner join t3  on t3.Code=t2.Code
inner join t4 e on t4.employeeindex=t1.employeeindex 
where t1.pyear=2016 and t1.pmonth=2

现在我想显示这样的数据

scode amount month year       e_name
  abc     3847    1    2016    john
  ABC     20938   2    2016    john
  XYZ     2838    1    2016    david
  XYZ     29384   2    2016    david

任何解决方案？

Answer 1

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您可以尝试使用cte。以下只是一个例子，自己调整列名，因为它有点混乱

WITH unionall AS (
    select ic.Code, t2.Amount, t1.pmonth, t1.pyear, e.Name
    from t1 
    inner join t2 on t2.id=t1.id
    inner join t3  on t3.Code=t2.Code
    inner join t4 e on t4.employeeindex=t1.employeeindex 
    where t1.pyear=2016 and (t1.pmonth=1 OR t2.pmonth=2)
)

SELECT r1.scode, r1.amount as amount1, r2.amount as amount2
FROM unionall r1 inner join unionall r2 on r1.scode = r2.scode

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如果您确定每个s_code有2个月（或至少是一个恒定数字），您可以轻松地自行连接并使用别名选择所有值，如下所示：

SELECT r1.scode, r1.amount as amount1, r2.amount as amount2 [...more fields...] FROM result r1 inner join result r2 on r1.scode = r2.scode [...many joins as many months...]

如果你可能有多个月你不知道，我可能会在mysql上做group_concat。基本上，您按scode分组然后在同一个字段中有一个列表分隔值。太糟糕了，你不能在SQLServer中做group_concat，但是有网上的解决方法指南

How to make a query with group_concat in sql server

SQL中的数据合并

1 个答案:

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