FIX: The JOIN queries in the triggers that involve the inserted table or the deleted table may return results that are not consistent

Service pack information

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Hotfix information

   Date         Time   Version		  Size	  File name
   ----------------------------------------------------------------------
   18-Jan-2002  04:45  2000.80.568.0      29,244  Dbmslpcn.dll     
   30-Aug-2002  21:08                    786,432  Distmdl.ldf
   30-Aug-2002  21:08                  2,359,296  Distmdl.mdf
   09-Oct-2002  00:54                        544  Drop_repl_hotfix.sql
   02-Jul-2002  15:35  2000.80.650.0     107,088  Impprov.dll      
   19-Jul-2002  16:56                    774,516  Instdist.sql
   08-Oct-2002  23:56                     12,615  Inst_repl_hotfix.sql
   20-Aug-2002  16:24  2000.80.679.0     111,172  Logread.exe      
   07-Apr-2002  02:08  2000.80.606.0      62,024  Odsole70.dll     
   03-Jan-2002  01:59                     18,185  Qfe356326.sql
   20-Aug-2002  16:47  2000.80.679.0     135,748  Qrdrsvc.exe      
   26-Aug-2002  22:49  2000.80.679.0     406,088  Rdistcom.dll     
   04-Oct-2001  01:36                    437,302  Replcom.sql
   20-Aug-2002  16:33  2000.80.679.0     152,136  Replmerg.exe     
   19-Nov-2001  20:36                    993,945  Replmerg.sql
   05-Nov-2002  23:48  2000.80.700.0     221,768  Replprov.dll     
   04-Oct-2001  01:36                    986,906  Replsys.sql
   04-Oct-2001  01:36                    881,228  Repltran.sql
   26-Aug-2002  22:49  2000.80.679.0     283,208  Rinitcom.dll     
   16-Sep-2002  22:31                    390,045  Securityhotfix.sql
   26-Aug-2002  22:49  2000.80.679.0      28,672  Sqlagent.dll     
   26-Aug-2002  18:39  2000.80.679.0     311,872  Sqlagent.exe     
   28-Aug-2002  16:32  2000.80.679.0      49,152  Sqlagent.rll
   26-Aug-2002  22:49  2000.80.679.0      53,824  Sqlcmdss.dll     
   28-Aug-2002  16:40  2000.80.679.0      12,288  Sqlcmdss.rll
   24-Oct-2002  17:37  2000.80.695.0     176,696  Sqlmap70.dll     
   21-Nov-2002  00:54  2000.80.705.0   7,471,185  Sqlservr.exe     
   21-Nov-2002  00:53                 12,633,088  Sqlservr.pdb
   01-Nov-2002  18:56  2000.80.698.0      45,644  Sqlvdi.dll       
   18-Jan-2002  04:45  2000.80.568.0      29,244  Ssmslpcn.dll     
   01-Nov-2002  18:00  2000.80.697.0      82,492  Ssnetlib.dll     
   07-Apr-2002  02:08  2000.80.606.0      70,208  Xplog70.dll      
   07-Apr-2002  02:08  2000.80.606.0      53,828  Xpqueue.dll      
   07-Apr-2002  02:08  2000.80.606.0     156,228  Xprepl.dll       
   12-Jul-2002  01:00  2000.80.658.0     279,104  Xpstar.dll       
   16-Sep-2002  23:12  2000.80.686.0      98,872  Xpweb70.dll

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Steps to reproduce the problem

1. In your database, create two tables that are named ParentTable and ChildTable.
2. Create a parent-child relationship between the tables that has a cascading delete reference, and then populate the tables with sample data. To do this, run the following Transact-SQL script in SQL Query Analyzer:

   USE <Database Name>
   GO
   
   if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_ParentID]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1)
   ALTER TABLE [dbo].[ChildTable] DROP CONSTRAINT FK_ParentID
   GO
   
   if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[t_ChildTable_Delete]') and OBJECTPROPERTY(id, N'IsTrigger') = 1)
   drop trigger [dbo].[t_ChildTable_Delete]
   GO
   
   if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[ChildTable]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
   drop table [dbo].[ChildTable]
   GO
   
   if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[ParentTable]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
   drop table [dbo].[ParentTable]
   GO
   
   CREATE TABLE [dbo].[ChildTable] (
   [ChildID] [int] IDENTITY (1, 1) NOT NULL ,
   [ParentID] [int] NOT NULL 
   ) ON [PRIMARY]
   GO
   
   CREATE TABLE [dbo].[ParentTable] (
   [ParentID] [int] IDENTITY (1, 1) NOT NULL 
   ) ON [PRIMARY]
   GO
   
   ALTER TABLE [dbo].[ChildTable] WITH NOCHECK ADD 
   CONSTRAINT [PK_ChildTable] PRIMARY KEY CLUSTERED 
   (
   [ChildID]
   ) ON [PRIMARY] 
   GO
   
   ALTER TABLE [dbo].[ParentTable] WITH NOCHECK ADD 
   CONSTRAINT [pk_Parent] PRIMARY KEY CLUSTERED 
   (
   [ParentID]
   ) ON [PRIMARY] 
   GO
   
   ALTER TABLE [dbo].[ChildTable] ADD 
   CONSTRAINT [FK_ParentID] FOREIGN KEY 
   (
   [ParentID]
   ) REFERENCES [dbo].[ParentTable] (
   [ParentID]
   ) ON DELETE CASCADE 
   GO
   
   SET QUOTED_IDENTIFIER OFF 
   GO
   SET ANSI_NULLS ON 
   GO
   
   SET IDENTITY_INSERT ParentTable ON
   GO
   INSERT INTO ParentTable (ParentID) VALUES (1)
   INSERT INTO ParentTable (ParentID) VALUES (2)
   GO
   SET IDENTITY_INSERT ParentTable OFF
   GO
   INSERT INTO ChildTable (ParentID) VALUES (1)
   INSERT INTO ChildTable (ParentID) VALUES (2)
   GO
   
   SET QUOTED_IDENTIFIER ON 
   GO
   SET ANSI_NULLS ON 
   GO
   

3. Create a DELETE trigger on the child table. To do this, run the following Transact-SQL script in SQL Query Analyzer:

   CREATE TRIGGER t_ChildTable_Delete
   ON ChildTable
   FOR DELETE
   AS 
   	SELECT * FROM deleted INNER JOIN ParentTable on deleted.ParentID = ParentTable.ParentID
   	SELECT COUNT(*) FROM deleted INNER JOIN ParentTable on deleted.ParentID = ParentTable.ParentID
   	
   IF EXISTS(SELECT * FROM deleted INNER JOIN ParentTable on deleted.ParentID = ParentTable.ParentID)
   		PRINT 'Exists returned true'
   	ELSE 
   		PRINT 'Exists returned false'
   
   RETURN
   GO

4. Delete data from the ParentTable table:

   DELETE FROM parenttable WHERE parentid=2

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