Answers for "sequelize migration down"

sequelize generate migration

npx sequelize-cli migration:generate --name add-title-post-table

squelize-cli create empty migration

npx sequelize-cli migration:create --name your_migration_name

sequelize migration default value

queryInterface.addColumn('OrderBackups', 'my_column', {
  type: Sequelize.INTEGER,
  defaultValue: 0
})

sequelize migration limit

queryInterface.createTable(
    'Posts',
    {
        title: {
            type: Sequelize.DataTypes.STRING(100),
            allowNull: false
        }
    }
);