24 lines
		
	
	
		
			598 B
		
	
	
	
		
			Ruby
		
	
	
	
			
		
		
	
	
			24 lines
		
	
	
		
			598 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 INTERSECT 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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    #     hierarchies = [group1.self_and_hierarchy, group2.self_and_hierarchy]
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    #     intersect   = Gitlab::SQL::Intersect.new(hierarchies)
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    #     sql         = intersect.to_sql
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    #
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    #     Project.where("id IN (#{sql})")
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    class Intersect < SetOperator
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      def self.operator_keyword
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        'INTERSECT'
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      end
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    end
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  end
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end
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