How to Find Duplicate Images

• Selvam Rajendran

  SSC-Addicted

  Points: 485

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  September 7, 2010 at 3:42 am

  #140413

  Hi,

  CREATE TABLE #tblImage (

  ImageID int IDENTITY(1,1) NOT FOR REPLICATION NOT NULL,

  [Image] image NOT NULL,

  [FileName] varchar(100) NOT NULL,

  FileExtension varchar(3) NOT NULL)

  INSERT INTO #tblImage ([Image],[FileName],FileExtension)

  VALUES ('0x307837383738373','image01','jpg')

  INSERT INTO #tblImage ([Image],[FileName],FileExtension)

  VALUES ('0x307837383738373','image02','jpg')

  INSERT INTO #tblImage ([Image],[FileName],FileExtension)

  VALUES ('0x3078333037383337333833373338333733','image03','jpg')

  Consider the above table. Can any one please give me a query to find the duplicate images?

  Note : Duplicate Filename is allowed.

  Thanks

  Selvam

• ChrisM@Work

  SSC Guru

  Points: 186127

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  September 7, 2010 at 4:02 am

  #1217214

  Cast your IMAGE column to VARBINARY(MAX), which is compatible with DISTINCT and ROW_NUMBER().

  See also http://msdn.microsoft.com/en-us/library/ms187993.aspx

  ^{“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw}

  For fast, accurate and documented assistance in answering your questions, please read this article.
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  Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden