Question

我需要一些帮助，以找出构建此查询的最佳方法，而且我认为我认为CTE是最好的主意。如果有更好的方法，我愿意接受其他建议。

此应用程序具有几种不同的对象类型。我当前关注的对象的简单层次结构如下：Group -> Catalog(s) -> Item(s) and Feature(s) -> Features (items also connect to features) -> Feature Values。这些对象中的每一个也都进行了版本控制，因此它们可以是第一个版本，也可以是多个深度版本。（提供此层次结构只是为了了解要实现的目标。

我要处理的数据都包含在History表中。该表包含以下列：HistoryID, HistoryObjectID, HistoryObjectCode, HistoryObjectTypeID, HistoryMessage, HistoryObjectTypeObjectID, Timestamp, ParentHistoryID, ParentObjectID, HistoryObjectGuid, NetworkID

HistoryObjectID是一个ID，该ID外键到创建该行的对象表（如组，目录等）
HistoryObjectCode是对象表中的另一个标识符，并在UI中使用
HistoryObjectTypeID是与对象类型（即组，目录等）相对应的枚举
消息应该是不言自明的
HistoryObjectTypeObjectID（坏名）是对象的主键
时间戳-不言自明
ParentHistoryID-如果此历史记录是从另一个“产生”的，则填充。实际上，我们现在实际上并没有真正使用它。
ParentObjectID-这是CTE中正在使用的当前列。它用对象“父”的主键填充。如果存在，则将其定义为对象父版本的主键。如果此版本是第一个版本，则它是父对象的主键。因此，对于目录的第一个版本，将使用包含目录的组ID进行填充。

这是我目前用于查询的内容。我的问题是在“基本情况”中返回的每一行都会发生递归：

WITH n(HistoryID, HistoryObjectID, HistoryObjectTypeID, HistoryObjectTypeObjectID, HistoryObjectCode, HistoryMessage, UserID, Timestamp, ParentHistoryID, ParentObjectID, HistoryObjectGuid) AS (
    SELECT HistoryID, HistoryObjectID, HistoryObjectTypeID, HistoryObjectTypeObjectID, HistoryObjectCode, HistoryMessage, UserID, Timestamp, ParentHistoryID, ParentObjectID, HistoryObjectGuid 
    FROM [DBName].[History] 
    WHERE HistoryObjectID = @HistoryObjectID
  UNION ALL 
    SELECT nplus1.HistoryID, nplus1.HistoryObjectID, nplus1.HistoryObjectTypeID, nplus1.HistoryObjectTypeObjectID, nplus1.HistoryObjectCode, nplus1.HistoryMessage, nplus1.UserID, nplus1.Timestamp, nplus1.ParentHistoryID, nplus1.ParentObjectID, nplus1.HistoryObjectGuid
    FROM [DBName].History as nplus1
    INNER JOIN n on n.HistoryObjectTypeObjectID = nplus1.ParentObjectID) 
  SELECT n.HistoryID, n.HistoryObjectID, n.HistoryObjectCode, n.HistoryObjectTypeID, n.HistoryMessage, n.HistoryObjectTypeObjectID, n.Timestamp, n.ParentHistoryID, n.ParentObjectID, n.HistoryObjectGuid, u.NetworkID
  FROM n INNER JOIN [CatalogBuilder].[User] u on n.UserId = u.UserId

例如，使用特定ID的以下查询运行之一将返回1653行，而在基本情况下将返回28行。如果在最终的select语句中添加distinct，则只会得到我真正感兴趣的49行。显而易见的问题是，由于不必要的递归，该查询需要花费非常长的时间才能运行。

我愿意接受有关如何执行此操作的任何建议。

编辑：添加示例数据

所需结果（返回14行）：

+-----------+-----------------+-----------------------+---------------------+----------------------------------------------------+---------------------------+-----------------------------+-----------------+----------------+--------------------------------------+------------------------+
| HistoryID | HistoryObjectID |   HistoryObjectCode   | HistoryObjectTypeID |                   HistoryMessage                   | HistoryObjectTypeObjectID |          Timestamp          | ParentHistoryID | ParentObjectID |          HistoryObjectGuid           |       NetworkID        |
+-----------+-----------------+-----------------------+---------------------+----------------------------------------------------+---------------------------+-----------------------------+-----------------+----------------+--------------------------------------+------------------------+
|    313404 |          572668 | TEST CATALOG CREATION |                   3 | Created catalog version 1.0.0 for catalog TESTCAT  |                       201 | 2019-01-04 15:02:22.1533333 | NULL            | NULL           | 3CE6BD8D-3AF4-46D2-9004-976113E110CD | hmiedema@steelcase.com |
|    319335 |          572668 | CATALOGCODE           |                   3 | Updated Catalog code to CATALOGCODE                |                       201 | 2019-01-23 21:29:19.6933333 | NULL            | NULL           | 3CE6BD8D-3AF4-46D2-9004-976113E110CD | hmiedema@steelcase.com |
|    319538 |          572668 | CATALOGCODE           |                   3 | Set English description to "new desc edited"       |                       201 | 2019-02-04 18:32:11.2166667 | NULL            | NULL           | 3CE6BD8D-3AF4-46D2-9004-976113E110CD | hmiedema@steelcase.com |
|    319539 |          572668 | CATALOGCODE           |                   3 | Added ADP to Catalog                               |                       201 | 2019-02-04 18:32:14.3100000 | NULL            | NULL           | 3CE6BD8D-3AF4-46D2-9004-976113E110CD | hmiedema@steelcase.com |
|    319544 |          572668 | CATALOGCODE           |                   3 | Added USD to Catalog                               |                       201 | 2019-02-05 13:36:11.5433333 | NULL            | NULL           | 3CE6BD8D-3AF4-46D2-9004-976113E110CD | hmiedema@steelcase.com |
|    319551 |          572668 | CATALOGCODE           |                   3 | Added CAD to Catalog                               |                       201 | 2019-02-06 14:35:28.9100000 | NULL            | NULL           | 3CE6BD8D-3AF4-46D2-9004-976113E110CD | hmiedema@steelcase.com |
|    319552 |          572668 | CATALOGCODE           |                   3 | Added USD to Catalog                               |                       201 | 2019-02-06 14:35:28.9700000 | NULL            | NULL           | 3CE6BD8D-3AF4-46D2-9004-976113E110CD | hmiedema@steelcase.com |
|    319685 |          585464 | TESTITEM8             |                   4 | Created Item TESTITEM8 - 1.0                       |                     52051 | 2019-02-11 15:32:49.8633333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319686 |          585464 | TESTITEM8             |                   4 | Set English name to "Test item #8"                 |                     52051 | 2019-02-11 15:32:54.0033333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319687 |          585464 | TESTITEM8             |                   4 | Created item version 1.0                           |                     52051 | 2019-02-11 15:32:56.8800000 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319688 |          585464 | TESTITEM8             |                   4 | Set English description to "Test Item Description" |                     52051 | 2019-02-11 15:33:00.4266667 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319689 |          585465 | NEW-FEATURE-CREATION  |                   6 | Set English name to "test"                         |                     19224 | 2019-02-11 16:27:33.6400000 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319690 |          585465 | NEW-FEATURE-CREATION  |                   6 | Created feature version 1.0                        |                     19224 | 2019-02-11 16:27:33.9066667 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319692 |          585464 | TESTITEM8             |                   4 | Linked feature NEW-FEATURE to item                 |                     52051 | 2019-02-11 18:59:17.2133333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
+-----------+-----------------+-----------------------+---------------------+----------------------------------------------------+---------------------------+-----------------------------+-----------------+----------------+--------------------------------------+------------------------+

返回的行太多（56行）：

+-----------+-----------------+-----------------------+---------------------+----------------------------------------------------+---------------------------+-----------------------------+-----------------+----------------+--------------------------------------+------------------------+
| HistoryID | HistoryObjectID |   HistoryObjectCode   | HistoryObjectTypeID |                   HistoryMessage                   | HistoryObjectTypeObjectID |          Timestamp          | ParentHistoryID | ParentObjectID |          HistoryObjectGuid           |       NetworkID        |
+-----------+-----------------+-----------------------+---------------------+----------------------------------------------------+---------------------------+-----------------------------+-----------------+----------------+--------------------------------------+------------------------+
|    313404 |          572668 | TEST CATALOG CREATION |                   3 | Created catalog version 1.0.0 for catalog TESTCAT  |                       201 | 2019-01-04 15:02:22.1533333 | NULL            | NULL           | 3CE6BD8D-3AF4-46D2-9004-976113E110CD | hmiedema@steelcase.com |
|    319335 |          572668 | CATALOGCODE           |                   3 | Updated Catalog code to CATALOGCODE                |                       201 | 2019-01-23 21:29:19.6933333 | NULL            | NULL           | 3CE6BD8D-3AF4-46D2-9004-976113E110CD | hmiedema@steelcase.com |
|    319538 |          572668 | CATALOGCODE           |                   3 | Set English description to "new desc edited"       |                       201 | 2019-02-04 18:32:11.2166667 | NULL            | NULL           | 3CE6BD8D-3AF4-46D2-9004-976113E110CD | hmiedema@steelcase.com |
|    319539 |          572668 | CATALOGCODE           |                   3 | Added ADP to Catalog                               |                       201 | 2019-02-04 18:32:14.3100000 | NULL            | NULL           | 3CE6BD8D-3AF4-46D2-9004-976113E110CD | hmiedema@steelcase.com |
|    319544 |          572668 | CATALOGCODE           |                   3 | Added USD to Catalog                               |                       201 | 2019-02-05 13:36:11.5433333 | NULL            | NULL           | 3CE6BD8D-3AF4-46D2-9004-976113E110CD | hmiedema@steelcase.com |
|    319551 |          572668 | CATALOGCODE           |                   3 | Added CAD to Catalog                               |                       201 | 2019-02-06 14:35:28.9100000 | NULL            | NULL           | 3CE6BD8D-3AF4-46D2-9004-976113E110CD | hmiedema@steelcase.com |
|    319552 |          572668 | CATALOGCODE           |                   3 | Added USD to Catalog                               |                       201 | 2019-02-06 14:35:28.9700000 | NULL            | NULL           | 3CE6BD8D-3AF4-46D2-9004-976113E110CD | hmiedema@steelcase.com |
|    319685 |          585464 | TESTITEM8             |                   4 | Created Item TESTITEM8 - 1.0                       |                     52051 | 2019-02-11 15:32:49.8633333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319685 |          585464 | TESTITEM8             |                   4 | Created Item TESTITEM8 - 1.0                       |                     52051 | 2019-02-11 15:32:49.8633333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319685 |          585464 | TESTITEM8             |                   4 | Created Item TESTITEM8 - 1.0                       |                     52051 | 2019-02-11 15:32:49.8633333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319685 |          585464 | TESTITEM8             |                   4 | Created Item TESTITEM8 - 1.0                       |                     52051 | 2019-02-11 15:32:49.8633333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319685 |          585464 | TESTITEM8             |                   4 | Created Item TESTITEM8 - 1.0                       |                     52051 | 2019-02-11 15:32:49.8633333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319685 |          585464 | TESTITEM8             |                   4 | Created Item TESTITEM8 - 1.0                       |                     52051 | 2019-02-11 15:32:49.8633333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319685 |          585464 | TESTITEM8             |                   4 | Created Item TESTITEM8 - 1.0                       |                     52051 | 2019-02-11 15:32:49.8633333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319686 |          585464 | TESTITEM8             |                   4 | Set English name to "Test item #8"                 |                     52051 | 2019-02-11 15:32:54.0033333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319686 |          585464 | TESTITEM8             |                   4 | Set English name to "Test item #8"                 |                     52051 | 2019-02-11 15:32:54.0033333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319686 |          585464 | TESTITEM8             |                   4 | Set English name to "Test item #8"                 |                     52051 | 2019-02-11 15:32:54.0033333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319686 |          585464 | TESTITEM8             |                   4 | Set English name to "Test item #8"                 |                     52051 | 2019-02-11 15:32:54.0033333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319686 |          585464 | TESTITEM8             |                   4 | Set English name to "Test item #8"                 |                     52051 | 2019-02-11 15:32:54.0033333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319686 |          585464 | TESTITEM8             |                   4 | Set English name to "Test item #8"                 |                     52051 | 2019-02-11 15:32:54.0033333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319686 |          585464 | TESTITEM8             |                   4 | Set English name to "Test item #8"                 |                     52051 | 2019-02-11 15:32:54.0033333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319687 |          585464 | TESTITEM8             |                   4 | Created item version 1.0                           |                     52051 | 2019-02-11 15:32:56.8800000 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319687 |          585464 | TESTITEM8             |                   4 | Created item version 1.0                           |                     52051 | 2019-02-11 15:32:56.8800000 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319687 |          585464 | TESTITEM8             |                   4 | Created item version 1.0                           |                     52051 | 2019-02-11 15:32:56.8800000 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319687 |          585464 | TESTITEM8             |                   4 | Created item version 1.0                           |                     52051 | 2019-02-11 15:32:56.8800000 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319687 |          585464 | TESTITEM8             |                   4 | Created item version 1.0                           |                     52051 | 2019-02-11 15:32:56.8800000 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319687 |          585464 | TESTITEM8             |                   4 | Created item version 1.0                           |                     52051 | 2019-02-11 15:32:56.8800000 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319687 |          585464 | TESTITEM8             |                   4 | Created item version 1.0                           |                     52051 | 2019-02-11 15:32:56.8800000 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319688 |          585464 | TESTITEM8             |                   4 | Set English description to "Test Item Description" |                     52051 | 2019-02-11 15:33:00.4266667 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319688 |          585464 | TESTITEM8             |                   4 | Set English description to "Test Item Description" |                     52051 | 2019-02-11 15:33:00.4266667 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319688 |          585464 | TESTITEM8             |                   4 | Set English description to "Test Item Description" |                     52051 | 2019-02-11 15:33:00.4266667 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319688 |          585464 | TESTITEM8             |                   4 | Set English description to "Test Item Description" |                     52051 | 2019-02-11 15:33:00.4266667 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319688 |          585464 | TESTITEM8             |                   4 | Set English description to "Test Item Description" |                     52051 | 2019-02-11 15:33:00.4266667 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319688 |          585464 | TESTITEM8             |                   4 | Set English description to "Test Item Description" |                     52051 | 2019-02-11 15:33:00.4266667 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319688 |          585464 | TESTITEM8             |                   4 | Set English description to "Test Item Description" |                     52051 | 2019-02-11 15:33:00.4266667 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319689 |          585465 | NEW-FEATURE-CREATION  |                   6 | Set English name to "test"                         |                     19224 | 2019-02-11 16:27:33.6400000 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319689 |          585465 | NEW-FEATURE-CREATION  |                   6 | Set English name to "test"                         |                     19224 | 2019-02-11 16:27:33.6400000 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319689 |          585465 | NEW-FEATURE-CREATION  |                   6 | Set English name to "test"                         |                     19224 | 2019-02-11 16:27:33.6400000 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319689 |          585465 | NEW-FEATURE-CREATION  |                   6 | Set English name to "test"                         |                     19224 | 2019-02-11 16:27:33.6400000 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319689 |          585465 | NEW-FEATURE-CREATION  |                   6 | Set English name to "test"                         |                     19224 | 2019-02-11 16:27:33.6400000 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319689 |          585465 | NEW-FEATURE-CREATION  |                   6 | Set English name to "test"                         |                     19224 | 2019-02-11 16:27:33.6400000 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319689 |          585465 | NEW-FEATURE-CREATION  |                   6 | Set English name to "test"                         |                     19224 | 2019-02-11 16:27:33.6400000 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319690 |          585465 | NEW-FEATURE-CREATION  |                   6 | Created feature version 1.0                        |                     19224 | 2019-02-11 16:27:33.9066667 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319690 |          585465 | NEW-FEATURE-CREATION  |                   6 | Created feature version 1.0                        |                     19224 | 2019-02-11 16:27:33.9066667 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319690 |          585465 | NEW-FEATURE-CREATION  |                   6 | Created feature version 1.0                        |                     19224 | 2019-02-11 16:27:33.9066667 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319690 |          585465 | NEW-FEATURE-CREATION  |                   6 | Created feature version 1.0                        |                     19224 | 2019-02-11 16:27:33.9066667 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319690 |          585465 | NEW-FEATURE-CREATION  |                   6 | Created feature version 1.0                        |                     19224 | 2019-02-11 16:27:33.9066667 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319690 |          585465 | NEW-FEATURE-CREATION  |                   6 | Created feature version 1.0                        |                     19224 | 2019-02-11 16:27:33.9066667 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319690 |          585465 | NEW-FEATURE-CREATION  |                   6 | Created feature version 1.0                        |                     19224 | 2019-02-11 16:27:33.9066667 | NULL            | 201            | 55ACDB43-51E6-4A5D-94DB-8B0808F946D6 | hmiedema@steelcase.com |
|    319692 |          585464 | TESTITEM8             |                   4 | Linked feature NEW-FEATURE to item                 |                     52051 | 2019-02-11 18:59:17.2133333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319692 |          585464 | TESTITEM8             |                   4 | Linked feature NEW-FEATURE to item                 |                     52051 | 2019-02-11 18:59:17.2133333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319692 |          585464 | TESTITEM8             |                   4 | Linked feature NEW-FEATURE to item                 |                     52051 | 2019-02-11 18:59:17.2133333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319692 |          585464 | TESTITEM8             |                   4 | Linked feature NEW-FEATURE to item                 |                     52051 | 2019-02-11 18:59:17.2133333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319692 |          585464 | TESTITEM8             |                   4 | Linked feature NEW-FEATURE to item                 |                     52051 | 2019-02-11 18:59:17.2133333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319692 |          585464 | TESTITEM8             |                   4 | Linked feature NEW-FEATURE to item                 |                     52051 | 2019-02-11 18:59:17.2133333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
|    319692 |          585464 | TESTITEM8             |                   4 | Linked feature NEW-FEATURE to item                 |                     52051 | 2019-02-11 18:59:17.2133333 | NULL            | 201            | FB3D799F-2038-4CE1-A27E-0C6F6EBE607F | hmiedema@steelcase.com |
+-----------+-----------------+-----------------------+---------------------+----------------------------------------------------+---------------------------+-----------------------------+-----------------+----------------+--------------------------------------+------------------------+

对于基本案例的每次运行，似乎都将返回“额外”行。在基本情况下返回了7行，而在其他7个条目中返回了49行，这些行应该是唯一的，这是期望的最后14行来自的位置（基本情况中的7行+其他7个唯一行）。

SQL Server CTE递归次数过多

0 个答案: