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					@ -15,5 +15,9 @@ | 
				
			
			
		
	
		
			
				
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					-- ALTER TABLE session_rel_course DROP COLUMN course_code; | 
				
			
			
		
	
		
			
				
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					-- ALTER TABLE session_rel_course_rel_user DROP COLUMN course_code; | 
				
			
			
		
	
		
			
				
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					-- ALTER TABLE track_e_hotpotatoes DROP COLUMN course_code; | 
				
			
			
		
	
		
			
				
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					-- ALTER TABLE track_e_exercices DROP COLUMN course_code; | 
				
			
			
		
	
		
			
				
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					-- ALTER TABLE track_e_attempt DROP COLUMN course_code; | 
				
			
			
		
	
		
			
				
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					ALTER TABLE session DROP COLUMN date_start; | 
				
			
			
		
	
		
			
				
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					ALTER TABLE session DROP COLUMN date_end; | 
				
			
			
		
	
		
			
				
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					ALTER TABLE session DROP COLUMN date_end; | 
				
			
			
		
	
		
			
				
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