BUG: Heterogeneous Query Showplan May Not Display Site Name

ID: Q197562


The information in this article applies to:
  • Microsoft SQL Server version 7.0

BUG #: 47446 (SQLBUG_70)

SYMPTOMS

When executing a heterogeneous query, the Showplan output does not always display the site name where that portion of the query plan was executed.


WORKAROUND

To work around this problem, refer to the query and determine the site by determining which site contains the objects being scanned.


STATUS

Microsoft has confirmed this to be a problem in SQL Server version 7.0.


MORE INFORMATION

In the example below, the site ([server1]) shows where the clustered index seek is performed.


   Query:
   Select * from server2.pubs.dbo.authors A INNER REMOTE JOIN
   server1.pubs.dbo.authors B on A.au_id = B.au_id

      |--Nested Loops(Inner Join)
         |--Remote Query(SELECT A."au_id" Col1002,A."au_lname"
   Col1003,A."au_fname" Col1004,A."phone" Col1005,A."address"
   Col1006,A."city"
   Col1007,A."state" Col1008,A."zip" Col1009,A."contract" Col1010 FROM
   "pubs"."dbo"."authors" A)
         |--Clustered Index
   Seek(OBJECT:([pubs].[dbo].[authors].[UPKCL_auidind] AS [B]),
   SEEK:([B].[au_id]=[server1].[pubs].[dbo].[authors].[au_id]) ORDERED) 
In the next example, the site where the clustered index scan is performed is not displayed.

  Query:
   Select * from server1.pubs.dbo.authors A INNER REMOTE JOIN
   server2.pubs.dbo.authors B on A.au_id = B.au_id
   
      |--Nested Loops(Inner Join)
         |--Clustered Index
   Scan(OBJECT:([pubs].[dbo].[authors].[UPKCL_auidind] AS [A]))
         |--Remote Query(SELECT B."au_id" Col1002,B."au_lname"
   Col1003,B."au_fname" Col1004,B."phone" Col1005,B."address"
   Col1006,B."city"
   Col1007,B."state" Col1008,B."zip" Col1009,B."contract" Col1010 FROM
   "pubs"."dbo"."authors" B WHERE ?=B."au_id") 

Additional query words: prodsql show plan

Keywords : kbbug7.00
Version : winnt:7.0
Platform : winnt
Issue type : kbbug


Last Reviewed: December 14, 1999
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