16 lines
		
	
	
	
		
			959 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
		
		
			
		
	
	
			16 lines
		
	
	
	
		
			959 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
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								class AddFixedLowercaseIndexToAccounts < ActiveRecord::Migration[5.2]
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								  disable_ddl_transaction!
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								  def up
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								    rename_index :accounts, 'index_accounts_on_username_and_domain_lower', 'old_index_accounts_on_username_and_domain_lower' unless index_name_exists?(:accounts, 'old_index_accounts_on_username_and_domain_lower')
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								    add_index :accounts, "lower (username), COALESCE(lower(domain), '')", name: 'index_accounts_on_username_and_domain_lower', unique: true, algorithm: :concurrently
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								    remove_index :accounts, name: 'old_index_accounts_on_username_and_domain_lower'
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								  end
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								  def down
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								    add_index :accounts, 'lower (username), lower(domain)', name: 'old_index_accounts_on_username_and_domain_lower', unique: true, algorithm: :concurrently
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								    remove_index :accounts, name: 'index_accounts_on_username_and_domain_lower'
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								    rename_index :accounts, 'old_index_accounts_on_username_and_domain_lower', 'index_accounts_on_username_and_domain_lower'
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								  end
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								end
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