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class EncryptedMessageIdsToTimestampIds < ActiveRecord::Migration[5.2]
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def up
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safety_assured do
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execute("ALTER TABLE encrypted_messages ALTER COLUMN id SET DEFAULT timestamp_id('encrypted_messages')")
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end
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end
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def down
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execute('LOCK encrypted_messages')
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execute("SELECT setval('encrypted_messages_id_seq', (SELECT MAX(id) FROM encrypted_messages))")
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execute("ALTER TABLE encrypted_messages ALTER COLUMN id SET DEFAULT nextval('encrypted_messages_id_seq')")
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end
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end
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