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tsql how to update column in all records of a table ..

Posted on 2012-12-26
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Last Modified: 2012-12-26
/****** Script for SelectTopNRows command from SSMS  ******/
SELECT top 2 p.ProgramID,a.ProgramIDM
  FROM [radiomix].[dbo].[chat] a
 inner JOIN [radiomix].[dbo].[MixFmProgram] p ON (a.DAY = p.ProgramWeekDay)
   WHERE 
  CONVERT(varchar,[datetimein], 114) >= convert(varchar, CONVERT(datetime,p.ProgramStart), 114)
and CONVERT(varchar,[datetimein], 114) < convert(varchar, CONVERT(datetime,p.ProgramEnd), 114 )
 order by a.id desc

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this is the querry
i want to update all p,ProgramIDM to the a.ProgramID


iin this example i have selected only 2 record order by a.id desc
i want to update the value of programidm in table chat by the correct one ??
what should be the query ??
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Question by:afifosh
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by:
Anthony Perkins earned 500 total points
ID: 38721298
Something like this perhaps:
UPDATE a
SET     ProgramIDM = p.ProgramID
FROM    [radiomix].[dbo].[chat] a
        INNER JOIN [radiomix].[dbo].[MixFmProgram] p ON (a.DAY = p.ProgramWeekDay)
WHERE   CONVERT(varchar, [datetimein], 114) >= CONVERT(varchar, CONVERT(datetime, p.ProgramStart), 114)
        AND CONVERT(varchar, [datetimein], 114) < CONVERT(varchar, CONVERT(datetime, p.ProgramEnd), 114)

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