The Sequelize model you create using the sequelize.define() method comes with a sync() method that you can use to create a table.The table created using the sync() method will follow the model definition for its column(s).For example, suppose you have the following User model defined in your code: The call to User.sync() above will cause… Continue reading How to create a database table using Sequelize code
Tag: Sequelize
Creating a transaction sequence using Sequelize
Sequelize supports running SQL statements under a transaction by using the Transaction object. To start a transaction using Sequelize, you need to create a Transaction object by calling sequelize.transaction() as shown belowconst trx = await sequelize.transaction(); The code above creates a Transaction instance named trx.When we run query methods from model, we need to pass the object as the transaction option. const trx =… Continue reading Creating a transaction sequence using Sequelize
How to add GROUP BY clause to a Sequelize find method
In Sequelize, you can add the group option in your query method findAll() to add the GROUP BY clause to the generated SQL query.For example, suppose you have a Users table with the following data: Now you want to select all firstName values and group any duplicate values of the column. Here’s the code for… Continue reading How to add GROUP BY clause to a Sequelize find method