23 lines
		
	
	
		
			522 B
		
	
	
	
		
			Ruby
		
	
	
	
			
		
		
	
	
			23 lines
		
	
	
		
			522 B
		
	
	
	
		
			Ruby
		
	
	
	
# frozen_string_literal: true
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module Gitlab
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  module SQL
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    # Class for building SQL EXCEPT statements.
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    #
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    # ORDER BYs are dropped from the relations as the final sort order is not
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    # guaranteed any way.
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    #
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    # Example usage:
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    #
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    #     except = Gitlab::SQL::Except.new([user.projects, user.personal_projects])
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    #     sql    = except.to_sql
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    #
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    #     Project.where("id IN (#{sql})")
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    class Except < SetOperator
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      def self.operator_keyword
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        'EXCEPT'
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      end
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    end
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  end
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end
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