SQL Query to remove itself with result found others.

Dear expert

I got problem with a query.

  SELECT ID
  FROM [system_Prod].[System].[Approvement]
  where ApprovementStatusId = 7

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This will show approvementStatusId = 7. Problem is next one query, I want all result ID that show up, all the duplex removes include the ID that got duplex it self for exemple: ID: 5000, with ApprovementStatusid = 7 shows up, and ID 5000 got also  ApprovementStatusID = 4, if it detect this, it will remove ID 5000 completely from the result. Is this possible to do?
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Éric MoreauSenior .Net ConsultantCommented:
you can try something like this:

  SELECT ID
  FROM [system_Prod].[System].[Approvement]
  where ApprovementStatusId = 7
and ID not in (select ID   FROM [system_Prod].[System].[Approvement]  where ApprovementStatusId = 4)

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Query Syntax

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