old_contents: exports.seed = (knex, Promise) =>
    knex('table').del().then(() =>
      Promise.all([
        knex('table').insert({
          id: 1,
          column_1: 'value1',
          column_2: 1,
        }),
        knex('table').insert({
          id: 2,
          column_1: 'value2',
          column_2: 2,
        }),
        knex('table').insert({
          id: 3,
          column_1: 'value3',
          column_2: 3,
        }),
      ]),
    );
  
new_contents: exports.seed = (knex, Promise) =>
    knex('table').del()
      .then(() =>
        Promise.all([
          knex('table').insert({
            id: 1,
            column_1: 'value1',
            column_2: 1,
          }),
          knex('table').insert({
            id: 2,
            column_1: 'value2',
            column_2: 2,
          }),
          knex('table').insert({
            id: 3,
            column_1: 'value3',
            column_2: 3,
          }),
        ]));
  
subject: Fix seeds