[dba-SQLServer] Deleting Global Temporary Tables

David Emerson newsgrps at dalyn.co.nz
Sun Jun 1 22:16:17 CDT 2008


Ah hah.  And I know just what I can do with the extra 0.006409 
seconds ( they don't call it instant coffee for nothing)

At 2/06/2008, you wrote:
>I prefer the second because it's shorter :-)
>
>But try them both in Query Analyser and take a look at the execution 
>plan costs!
>
>Version1:  0.00641
>Version 2: 0.000001
>
>The simple version is 6410 times more efficient!!!!
>
>--
>Stuart
>
>
>On 2 Jun 2008 at 14:15, David Emerson wrote:
>
> > With further testing I was able to get both methods to work:
> >
> > IF EXISTS (SELECT * FROM tempdb.dbo.sysobjects WHERE id =
> > object_id(N'tempdb.dbo.##tblCAFRClientAsset'))
> > DROP TABLE dbo.##tblCAFRClientAsset
> >
> >
> > If Object_Id('tempdb..##tblCAFRClientAsset') is Not Null
> > DROP TABLE dbo.##tblCAFRClientAsset
> >
> > Does one method have any advantages over the other?
> >
> > David.
> >
> > At 2/06/2008, Stuart wrote:
> > >Try:
> > >
> > >If Object_Id('tempdb..##tblCAFRClientAsset') is Not Null
> > >DROP TABLE dbo.##tblCAFRClientAsset
> > >
> > >--
> > >Stuart
> > >
> > >On 2 Jun 2008 at 11:39, David Emerson wrote:
> > >
> > > > Group,
> > > >
> > > > I have this code in a sproc:
> > > >
> > > >          IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id =
> > > > object_id(N'dbo.##tblCAFRClientAsset') AND OBJECTPROPERTY(id,
> > > > N'IsUserTable') = 0)
> > > >                  DROP TABLE dbo.##tblCAFRClientAsset
> > > >
> > > >          CREATE TABLE dbo.##tblCAFRClientAsset (
> > > >                  [ClientAssetID] [numeric](10, 0) IDENTITY (1, 1)
> > > NOT NULL ,
> > > >                  [AssetType] [varchar] (50) COLLATE
> > > Latin1_General_CI_AS NULL ,
> > > >                  [Owner] [varchar] (10) COLLATE 
> Latin1_General_CI_AS NULL ,
> > > >                  [Description] [varchar] (50) COLLATE
> > > > Latin1_General_CI_AS NULL ,
> > > >                  [Description2] [varchar] (50) COLLATE
> > > > Latin1_General_CI_AS NULL ,
> > > >                  [AccountNo] [varchar] (20) COLLATE
> > > Latin1_General_CI_AS NULL ,
> > > >                  [MarketValue] [money] NULL ,
> > > >                  [Contributions] [money] NULL ,
> > > >                  [ContributionsImp] [money] NULL ,
> > > >                  [InterestRate] [real] NULL ,
> > > >                  [PropertyType] [varchar] (50) COLLATE
> > > > Latin1_General_CI_AS NULL ,
> > > >                  [PropertyExpenses] [money] NULL ,
> > > >                  [InvestmentType] [varchar] (50) COLLATE
> > > > Latin1_General_CI_AS NULL ,
> > > >                  [InsuranceType] [varchar] (50) COLLATE
> > > > Latin1_General_CI_AS NULL ,
> > > >                  [InsCover] [money] NULL ,
> > > >                  [InsCoverImp] [money] NULL ,
> > > >                  [InsPolicyTerm] [smallint] NULL ,
> > > >                  [Comment] [varchar] (250) COLLATE
> > > Latin1_General_CI_AS NULL ,
> > > >                  [SortOrder] [smallint] NULL
> > > >                  )
> > > >
> > > > I am getting an error message when I run it "There is already an
> > > > object named '##tblCAFRClientAsset' in the database.".  This is on
> > > > the line trying to create the table.  It seems that the table is not
> > > > being dropped.  When I try to run just the select portion of the
> > > > first line nothing is returned.  How do I identify if the temporary
> > > > table exists so I can drop it?
> > > >
> > > > Regards
> > > >
> > > > David Emerson
> > > > Dalyn Software Ltd
> > > > Wellington, New Zealand
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> > > >
> > >
> > >
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