我正在使用此查询创建 HTML 表并通过电子邮件发送。 仅当“组 ID”和“总交易总和”列具有相同值时，是否可以合并单元格以提高可读性？ 下面是我想要得到的结果
CREATE TABLE #list (GroupID int,AccountID int,Country varchar (20),AccountTransactionSum int)
Insert into #list
values
(1,18754,'United Kingdom',110),
(1,24865,'Germany',265),
(1,82456,'Poland',1445),
(1,98668,'United Kingdom',60),
(1,37843,'France',1490),
(2,97348,'United Kingdom',770)
DECLARE @xmlBody XML
SET @xmlBody = (SELECT (SELECT GroupID, AccountID, Country, AccountTransactionSum, TotalTransactionSum = sum(AccountTransactionSum) over (partition by GroupID)
FROM #list
ORDER BY GroupID
FOR XML PATH('row'), TYPE, ROOT('root')).query('<html><head><meta charset="utf-8"/><style>
table <![CDATA[ {border-collapse: collapse; } ]]>
th <![CDATA[ {background-color: #4CAF50; color: white;} ]]>
th, td <![CDATA[ { text-align: center; padding: 8px;} ]]>
tr:nth-child(even) <![CDATA[ {background-color: #f2f2f2;} ]]>
</style></head>
<body><table border="1" cellpadding="10" style="border-collapse:collapse;">
<thead><tr>
<th>No.</th>
<th> Group ID </th><th> Account ID </th><th> Country </th><th> Account Transaction Sum </th><th> Total Transaction Sum </th>
</tr></thead>
<tbody>
{for $row in /root/row
let $pos := count(root/row[. << $row]) + 1
return <tr align="center" valign="center">
<td>{$pos}</td>
<td>{data($row/GroupID)}</td><td>{data($row/AccountID)}</td><td>{data($row/Country)}</td><td>{data($row/AccountTransactionSum)}</td><td>{data($row/TotalTransactionSum)}</td>
</tr>}
</tbody></table></body></html>'));
select @xmlBody
我得到的结果
我想要的结果
链接到 HTML 编辑器 https://codebeautify.org/real-time-html-editor/y237bf87d
对于 Siggemannen 的非常好的答案，我只想添加一种替代方法来处理 xquery 中的那些 td，
SELECT GroupID, AccountID, Country, AccountTransactionSum, TotalTransactionSum = sum(AccountTransactionSum) over (partition by GroupID), rowspan = COUNT(*) OVER(PARTITION BY GroupID), display = CASE WHEN lag(GroupID) OVER(ORDER BY GroupID,AccountID) = GroupID THEN 'display:none' ELSE '' END FROM #list定义 rowspan 和 display 后，您可以在 xquery for 循环中使用它们
这是一个很好的问题，因为我不知道
xquery可以发挥这种魔力！ 这就是我想到的：DROP TABLE #list go SELECT * INTO #list FROM ( VALUES (1,18754,'United Kingdom',110), (1,24865,'Germany',265), (1,82456,'Poland',1445), (1,98668,'United Kingdom',60), (1,37843,'France',1490), (2,97348,'United Kingdom',770) ) t (groupid,accountid, country, AccountTransactionSum) DECLARE @xmlBody XML SET @xmlBody = (SELECT (SELECT GroupID, AccountID, Country, AccountTransactionSum, TotalTransactionSum = sum(AccountTransactionSum) OVER (partition BY GroupID), COUNT(*) OVER(PARTITION BY GroupID) AS rowspan, CASE WHEN lag(GroupID) OVER(ORDER BY groupid,accountid) = GroupID THEN 1 ELSE 0 END AS skipTd FROM #list ll ORDER BY GroupID, accountid FOR XML PATH('row'), TYPE, ROOT('root')).query('基本上我创建了两列，rowspan 和skipTd。第一个控制是否应适用 rowspan，第二个表示是否应跳过当前，因为它属于同一组。
然后我向 xquery 添加了一个嵌套的 if ，因此它根据这两个标志返回 rowspanned、“跳过”或正常 HTML。也许有更好的方法，我不是专家。