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08.09.2006 at 09:29PM PDT, ID: 21949432
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8.6

T-SQL Update Select Data

Asked by Chizl in Databases Miscellaneous

Tags: , ,

Scenerio, I have 100 records.   From the stored proc (SQL 2000), I want to pull 10 records at a time in a date order.   I want to mark these records so they are not pulled a second time.    The below example will work, but my problem is, I have many processes calling this proc and there is a millisecond gap between the time it's inserted into @tmp and it's updated in Example.   This means another process could pull the exact same data..   What I'm looking for is to update and selected the data at the same time..  Is that possible without triggers?  I know I've done this before, but I think I'm having a brain fart..

create procedure [dbo].[app_Request]
as
begin
      set nocount on
      
      declare @Tmp table (
            [Field1] [int] ,
            [Field2] [varchar] (20) ,
            [Field3] [varchar] (50) ,
            [Status] [int] ,
            [CreateDate] [datetime] )

      insert into @tmp select top 5 [Field1], [Field2], [Field3], [Status], [CreateDate] from Example where Status=0 order by CreateDate

      update Example set Status=1
      from Example e
      inner join @tmp t on t.Field1= e.Field1 and t.Field2=e.Field2

      select * from @tmp
endStart Free Trial
[+][-]08.09.2006 at 09:57PM PDT, ID: 17285217

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[+][-]08.09.2006 at 09:57PM PDT, ID: 17285218

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About this solution

Zone: Databases Miscellaneous
Tags: update, select, sql
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Solution Provided By: angelIII
Participating Experts: 3
Solution Grade: A
 
 
[+][-]08.09.2006 at 10:13PM PDT, ID: 17285270

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[+][-]08.10.2006 at 12:09AM PDT, ID: 17285741

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[+][-]08.10.2006 at 12:12AM PDT, ID: 17285747

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[+][-]08.10.2006 at 12:25AM PDT, ID: 17285783

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[+][-]08.10.2006 at 12:25AM PDT, ID: 17285785

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[+][-]08.10.2006 at 12:44AM PDT, ID: 17285867

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[+][-]08.10.2006 at 12:51AM PDT, ID: 17285925

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[+][-]08.10.2006 at 12:53AM PDT, ID: 17285934

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