How to query for entries with columns that are not null with JavaScript Sequelize?

To query for entries with columns that are not null with JavaScript Sequelize, we use the Op.ne property.

For instance, we write

Post.update(
  {
    updatedAt: null,
  },
  {
    where: {
      deletedAt: {
        [Op.ne]: null,
      },
    },
  }
);

to select the entries that have the deletedAt field set to a non-null value with Op.ne.

And then we call update with an object to set updatedAt to null for entries that match the condition.