11 lines
		
	
	
	
		
			371 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			11 lines
		
	
	
	
		
			371 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
| class OptimizeIndexSubscriptions < ActiveRecord::Migration[5.0]
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|   def up
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|     add_index :subscriptions, [:account_id, :callback_url], unique: true
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|     remove_index :subscriptions, [:callback_url, :account_id]
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|   end
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| 
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|   def down
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|     add_index :subscriptions, [:callback_url, :account_id], unique: true
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|     remove_index :subscriptions, [:account_id, :callback_url]
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|   end
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| end
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