Question

示例数据已更新 - 我在确认之前发布了数据

使用 SQL Server ，我返回了以下数据：

select id, dateofservice, first, second, third, fourth, fn, ln
from servicesTbl

示例数据：

id  dateofservice   first   second  third   fourth  fn      ln      
-------------------------------------------------------------------
1   2/01/2013       Y       N       N       Y       John    Doe    
2   2/01/2013       N       N       Y       Y       Sue     Fisher    
2   2/01/2013       Y       N       N       N       Sue     Fisher    
3   2/01/2013       Y       N       N       Y       Daivd   Smith    
3   2/01/2013       N       N       Y       N       Daivd   Smith       
4   2/01/2013       N       N       N       N       Bob     Denver

我需要知道如何编写我的查询，以便Sue Fisher和David Smith的记录都在一行上，这意味着输出应该是这样的：

1   2/01/2013       Y       N       N       Y       John    Doe    
2   2/01/2013       Y       N       Y       Y       Sue     Fisher    
3   2/01/2013       Y       N       Y       Y       Daivd   Smith       
4   2/01/2013       N       N       N       N       Bob     Denver

此查询对我不起作用，我不知道如何以我想要的格式获取输出。

select id, dateofservice, first, second, third, fourth, fn, ln    
from servicesTbl    
group by ln

示例数据已更新 - 我在确认之前发布了数据

Answer 1

SELECT 
    id, 
    dateofservice, 
    (CASE WHEN SUM(first) > 0 THEN 1 ELSE 0 END) AS first, 
    (CASE WHEN SUM(second) > 0 THEN 1 ELSE 0 END) AS second, 
    (CASE WHEN SUM(third) > 0 THEN 1 ELSE 0 END) AS third, 
    (CASE WHEN SUM(fourth) > 0 THEN 1 ELSE 0 END) AS fourth, 
    fn, 
    ln 
    OVER (PARTITION BY id)
FROM servicesTbl

这可能也会起作用，考虑它并且它更简洁：

SELECT 
    id, 
    dateofservice, 
    MAX(first) AS first, 
    MAX(second) AS second, 
    MAX(third) AS third, 
    MAX(fourth) AS fourth, 
    fn, 
    ln 
    OVER (PARTITION BY id)
FROM servicesTbl

在像MySQL这样的事情中，通常的做法是：

SELECT 
    id, 
    dateofservice, 
    MAX(first) AS first, 
    MAX(second) AS second,
    MAX(third) AS third,
    MAX(fourth) AS fourth,
    fn, 
    ln
FROM servicesTbl
GROUP BY id

...但我认为我说MSSQL会抱怨fn，而不是聚合函数或不在GROUP BY子句中是正确的：使用上面的OVER PARTITION方法应该解决这个问题。

请注意，这是未经测试的，因为我没有手持MSSQL，但应该指向正确的方向。

Answer 2

select id,CONVERT(VARCHAR(10),Dateofservice,111) as Dateofservice,
 MAX(first) as first ,
 MAX(second) as second,
 MAX(third) as third,
 MAX(fourth) as fourth, fn, ln from dbo.ttest
group by id,CONVERT(VARCHAR(10),Dateofservice,111),fn, ln

我已将该表命名为tttest，您可以使用您的表名。另外，我使用随机日期格式更改它以适合自己。

Answer 3

使用CF，我能够通过然后执行查询

<table>
    <cfoutput query='rsData' group="id">
        <cfoutput>
            <tr>
                <td>#dateformat(dateofservice,'mm/dd/yyyy')#</td>
                <td>#first#</td>
                <td>#second#</td>
                <td>#third#</td>
                <td>#fourth#</td>
                <td>#fn#</td>
                <td>#ln#</td>
            </tr>
        </cfoutput>
    </cfoutput>
</table>

协助MSSQL查询分组数据

3 个答案: