Auto increment column

Hi Experts
i need to add an auto increment column to and distinct SQL query that was generated from #Temp table
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select distinct b.* from #Temp1 as a
inner join #TempCourses as b on a.CourseId = b.Courseid and a.[Request Date] = b.[From Date]
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AZZA-KHAMEESAsked:
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Dorababu MSenior Software EngineerCommented:
You can use ROW_NUMBER some thing like this
SELECT row_number() OVER (ORDER BY col1) n,
       col1
  FROM table1 

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select row_number() OVER (ORDER BY b.col) n,distinct b.* from #Temp1 as a 
inner join #TempCourses as b on a.CourseId = b.Courseid and a.[Request Date] = b.[From Date]

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Máté FarkasDatabase Developer and AdministratorCommented:
It would be better to add a new column to that temporary table when you create it but it is also good to add it later with identity default:

ALTER TABLE #Temp1
        ADD NewID INT NULL IDENTITY(1,1)

SELECT * FROM #Temp1

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Query Syntax

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