用于嵌套行的XML列表的SQL

我有一个超长的SQL查询，现在这个查询所做的是，创建第一个级别，这是作业_No…下一个在第二个级别中获取所有的“BaselineStart”，但是这将每个BaselineStart与BaseOrSchedStarList分开，我想做的是为每个作业设置一个baseOrSchedStartList，并在baseOrSchedStartList下设置每个“字符串”。我希望这是有道理的。我的问题是：

SELECT [Job_No] as '@Key',
(
        SELECT ISNULL(UserDate1,ScheduleTasks.BaselineStart) AS 'string' 

        FROM ScheduleTasks INNER JOIN Schedule ON ScheduleTasks.ScheduleID = Schedule.ScheduleID INNER JOIN V_CONSTAT_ACTUAL_DATES ON V_CONSTAT_ACTUAL_DATES.JOB_NUMBER = Schedule.Job_No WHERE Job_No IN (SELECT JOB_NUMBER
                        FROM V_CONSTAT_ACTUAL_DATES
                        WHERE AREA_DESC = 'Orchard Park'
                        AND (DATE_TO_END IS NOT NULL AND DATE_TO_END >= GETDATE())) AND
               (
                        LibraryTaskID <> 203
                        AND LibraryTaskID <> 204
                        AND LibraryTaskID <> 210
                        AND LibraryTaskID <> 211
                        AND LibraryTaskID <> 214
                        AND LibraryTaskID <> 215
                        AND LibraryTaskID <> 218
                        AND LibraryTaskID <> 219
                        AND LibraryTaskID <> 224
                        AND LibraryTaskID <> 227
                        AND LibraryTaskID <> 230
                        AND LibraryTaskID <> 231
                        AND LibraryTaskID <> 232
                        AND LibraryTaskID <> 233
                        AND LibraryTaskID <> 234
                        AND LibraryTaskID <> 235
                        AND LibraryTaskID <> 236
                        AND LibraryTaskID <> 237        
                        AND LibraryTaskID <> 238
                        AND LibraryTaskID <> 239
                        AND LibraryTaskID <> 240
                        AND LibraryTaskID <> 242
                        AND LibraryTaskID <> 243
                        AND LibraryTaskID <> 295
                        AND LibraryTaskID <> 299
                        AND LibraryTaskID <> 303
                        AND LibraryTaskID <> 304
                        AND LibraryTaskID <> 305
                        AND LibraryTaskID <> 313
                        AND LibraryTaskID <> 314
                        AND LibraryTaskID <> 321
                        AND LibraryTaskID <> 333

               )

            ORDER BY DATE_TO_END, SortOrder
            FOR XML PATH('baseOrSchedStartList'), Type
)
FROM ScheduleTasks INNER JOIN Schedule ON ScheduleTasks.ScheduleID = Schedule.ScheduleID INNER JOIN V_CONSTAT_ACTUAL_DATES ON V_CONSTAT_ACTUAL_DATES.JOB_NUMBER = Schedule.Job_No WHERE Job_No IN (SELECT JOB_NUMBER
                        FROM V_CONSTAT_ACTUAL_DATES
                        WHERE AREA_DESC = 'Orchard Park'
                        AND (DATE_TO_END IS NOT NULL AND DATE_TO_END >= GETDATE())) AND
               (
                        LibraryTaskID <> 203
                        AND LibraryTaskID <> 204
                        AND LibraryTaskID <> 210
                        AND LibraryTaskID <> 211
                        AND LibraryTaskID <> 214
                        AND LibraryTaskID <> 215
                        AND LibraryTaskID <> 218
                        AND LibraryTaskID <> 219
                        AND LibraryTaskID <> 224
                        AND LibraryTaskID <> 227
                        AND LibraryTaskID <> 230
                        AND LibraryTaskID <> 231
                        AND LibraryTaskID <> 232
                        AND LibraryTaskID <> 233
                        AND LibraryTaskID <> 234
                        AND LibraryTaskID <> 235
                        AND LibraryTaskID <> 236
                        AND LibraryTaskID <> 237        
                        AND LibraryTaskID <> 238
                        AND LibraryTaskID <> 239
                        AND LibraryTaskID <> 240
                        AND LibraryTaskID <> 242
                        AND LibraryTaskID <> 243
                        AND LibraryTaskID <> 295
                        AND LibraryTaskID <> 299
                        AND LibraryTaskID <> 303
                        AND LibraryTaskID <> 304
                        AND LibraryTaskID <> 305
                        AND LibraryTaskID <> 313
                        AND LibraryTaskID <> 314
                        AND LibraryTaskID <> 321
                        AND LibraryTaskID <> 333

               )
               GROUP BY [Job_No]
               FOR XML PATH('Job_No'), ROOT('Root')

此查询返回以下数据：

<Root>
  <Job_No Key="ORC0023">
    <baseOrSchedStartList>
      <string>2015-09-11T08:00:00</string>
    </baseOrSchedStartList>
    <baseOrSchedStartList>
      <string>2015-08-10T16:00:00</string>
    </baseOrSchedStartList>
    <baseOrSchedStartList>
      <string>2015-08-11T16:00:00</string>
    </baseOrSchedStartList>
  </Job_No>
</Root>

我正在寻找的是以下内容：

<Root>
  <Job_No Key="ORC0023">
    <baseOrSchedStartList>
      <string>2015-09-11T08:00:00</string>
      <string>2015-08-10T16:00:00</string>
      <string>2015-08-11T16:00:00</string>
    </baseOrSchedStartList>
  </Job_No>
</Root>

DECLARE @tbl TABLE([Key] VARCHAR(10),DateValue DATETIME);
INSERT INTO @tbl VALUES ('ORC0023','2015-09-11T08:00:00')
                       ,('ORC0023','2015-08-10T16:00:00')
                       ,('ORC0023','2015-08-11T16:00:00')

DECLARE @UniqueKey VARCHAR(10)='ORC0023';

--This is structurally what you've got
SELECT @UniqueKey AS [@Key]
      ,(
        SELECT DateValue AS [string]
        FROM @tbl AS tbl 
        WHERE tbl.[Key]=@UniqueKey
        FOR XML PATH('baseOrSchedStartList'),TYPE
       )
FOR XML PATH('Job_No'),ROOT('Root')

/*
<Root>
  <Job_No Key="ORC0023">
    <baseOrSchedStartList>
      <string>2015-09-11T08:00:00</string>
    </baseOrSchedStartList>
    <baseOrSchedStartList>
      <string>2015-08-10T16:00:00</string>
    </baseOrSchedStartList>
    <baseOrSchedStartList>
      <string>2015-08-11T16:00:00</string>
    </baseOrSchedStartList>
  </Job_No>
</Root>
*/

任何帮助都将不胜感激。

根据您的需要进行更新 如果你从AS[@Key]中去掉@，你就会得到这个

DECLARE @tbl TABLE([Key] VARCHAR(10),DateValue DATETIME);
INSERT INTO @tbl VALUES ('ORC0023','2015-09-11T08:00:00')
                       ,('ORC0023','2015-08-10T16:00:00')
                       ,('ORC0023','2015-08-11T16:00:00')

DECLARE @UniqueKey VARCHAR(10)='ORC0023';
SELECT @UniqueKey AS [Key]
      ,(
        SELECT DateValue AS [string]
        FROM @tbl AS tbl 
        WHERE tbl.[Key]=@UniqueKey
        FOR XML PATH(''),TYPE
       ) AS baseOrSchedStartList
FOR XML PATH('Job_No'),ROOT('Root')

/*
<Root>
  <Job_No>
    <Key>ORC0023</Key>
    <baseOrSchedStartList>
      <string>2015-09-11T08:00:00</string>
      <string>2015-08-10T16:00:00</string>
      <string>2015-08-11T16:00:00</string>
    </baseOrSchedStartList>
  </Job_No>
</Root>
*/

到

另一种选择是——正如BateTech在一篇评论中指出的那样——将baseOrSchedStart作为根“baseOrSchedStart”放在FOR XML路径的后面，并让未命名的字符串

以前的 如果没有表的结构和测试数据，就很难完全理解查询，实际上查询并不是很长：-

因此，我准备了一个简化的结构示例，希望您能够理解该方法并将其转换为实际数据

请尝试以下方法：

<Root>
  <Job_No Key="ORC0023">
    <baseOrSchedStartList>
      <string>2015-09-11T08:00:00</string>
      <string>2015-08-10T16:00:00</string>
      <string>2015-08-11T16:00:00</string>
    </baseOrSchedStartList>
  </Job_No>
</Root>

DECLARE @tbl TABLE([Key] VARCHAR(10),DateValue DATETIME);
INSERT INTO @tbl VALUES ('ORC0023','2015-09-11T08:00:00')
                       ,('ORC0023','2015-08-10T16:00:00')
                       ,('ORC0023','2015-08-11T16:00:00')

DECLARE @UniqueKey VARCHAR(10)='ORC0023';

--This is structurally what you've got
SELECT @UniqueKey AS [@Key]
      ,(
        SELECT DateValue AS [string]
        FROM @tbl AS tbl 
        WHERE tbl.[Key]=@UniqueKey
        FOR XML PATH('baseOrSchedStartList'),TYPE
       )
FOR XML PATH('Job_No'),ROOT('Root')

/*
<Root>
  <Job_No Key="ORC0023">
    <baseOrSchedStartList>
      <string>2015-09-11T08:00:00</string>
    </baseOrSchedStartList>
    <baseOrSchedStartList>
      <string>2015-08-10T16:00:00</string>
    </baseOrSchedStartList>
    <baseOrSchedStartList>
      <string>2015-08-11T16:00:00</string>
    </baseOrSchedStartList>
  </Job_No>
</Root>
*/

---

如果您更改为XML路径“baseOrSchedStartList”，请为XML路径键入，根“baseOrSchedStartList”，然后键入应该执行此操作的子查询。我刚刚找到了您的后续问题并扩展了我的答案

SELECT @UniqueKey AS [@Key]
      ,(
        SELECT DateValue AS [*]
        FROM @tbl AS tbl 
        WHERE tbl.[Key]=@UniqueKey
        FOR XML PATH('string'),TYPE
       ) AS baseOrSchedStartList
FOR XML PATH('Job_No'),ROOT('Root')

/*
<Root>
  <Job_No Key="ORC0023">
    <baseOrSchedStartList>
      <string>2015-09-11T08:00:00</string>
      <string>2015-08-10T16:00:00</string>
      <string>2015-08-11T16:00:00</string>
    </baseOrSchedStartList>
  </Job_No>
</Root>
*/

SELECT @UniqueKey AS [@Key]
      ,(
        SELECT DateValue AS [string]
        FROM @tbl AS tbl 
        WHERE tbl.[Key]=@UniqueKey
        FOR XML PATH(''),TYPE
       ) AS baseOrSchedStartList
FOR XML PATH('Job_No'),ROOT('Root')