text: import { BlockchainEvent } from '../src/BlockchainEvent'
  
  const tableName = BlockchainEvent.tableName
  
  exports.up = pgm => {
    pgm.createIndex(tableName, ['block_number', 'log_index'])
  }
  
  exports.down = pgm => {
    pgm.dropIndex(tableName, ['block_number', 'log_index'])
  }
  