sequelize migration create code example
Example 1: sequelize generate migration
npx sequelize-cli migration:generate --name add-title-post-table
Example 2: squelize-cli create empty migration
npx sequelize-cli migration:create --name your_migration_name
Example 3: sequelize migration default value
queryInterface.addColumn('OrderBackups', 'my_column', {
type: Sequelize.INTEGER,
defaultValue: 0
})
Example 4: sequelize migration add column
module.exports = {
up: (queryInterface, Sequelize) => {
return queryInterface.sequelize.transaction((t) => {
return Promise.all([
queryInterface.addColumn('table_name', 'field_one_name', {
type: Sequelize.STRING
}, { transaction: t }),
queryInterface.addColumn('table_name', 'field_two_name', {
type: Sequelize.STRING,
}, { transaction: t })
])
})
},
down: (queryInterface, Sequelize) => {
return queryInterface.sequelize.transaction((t) => {
return Promise.all([
queryInterface.removeColumn('table_name', 'field_one_name', { transaction: t }),
queryInterface.removeColumn('table_name', 'field_two_name', { transaction: t })
])
})
}
};