exports.up = function(knex) {
    return knex.schema
        .createTable('messages', function(table) {
            table.increments('message_id').primary()
            table.integer('user_id').notNullable()
            table.integer('grouping_id').notNullable()
            table.string('message', 255).notNullable()
        })
}

exports.down = function(knex) {
    return knex.schema
        .dropTable('messages')
}