You can do by adding a model (the model being passed as an argument) is the target.
Furthermore this is used internally for was originally made to be a mainstream/fast way of inserting records, however, sometimes you want the luxury of being able to insert multiple rows at once without sacrificing model validations even when you explicitly tell Sequelize which columns to sift through.
Furthermore, Project.prototype will gain the methods get User and set User according to the first parameter passed to define. if you already have an existing database and want to work on it: */ One(User, ) /* Because Sequelize will use the model's name (first parameter of define) for the accessor methods, it is also possible to pass a special option to has One: */ One(User, ) // Now you will get Initiator and Initiator // Or let's define some self references const Person = sequelize.define('person', ) One(Person, ) // this will add the attribute Father Id to Person // also possible: One(Person, ) // this will add the attribute Dad Id to Person // In both cases you will be able to do: Father Father // If you need to join a table twice you can double join the same table One(Game, ); One(Game, ); Game.belongs To(Team); Even though it is called a Has One association, for most 1:1 relations you usually want the Belongs To association since Belongs To will add the foreign Key on the source where has One will add on the target. Suppose we have two tables to link Player and Team. Has One and Belongs To insert the association key in different models from each other.
A simple example would be a Player being part of a Team with the foreign key on the player.const Player = this.sequelize.define('player', ); const Team = this.sequelize.define('team', ); Player.belongs To(Team); // Will add a team Id attribute to Player to hold the primary key value for Teamconst User = this.sequelize.define('user', ) const Company = this.sequelize.define('company', ); User.belongs To(Company); // Will add company Id to user const User = this.sequelize.define('user', , ) const Company = this.sequelize.define('company', ); User.belongs To(Company); // Will add company_uuid to user The target key is the column on the target model that the foreign key column on the source model points to.sequelize .query(' SELECT * FROM projects', ) .then(projects =If you do not want timestamps on your models, only want some timestamps, or you are working with an existing database where the columns are named something else, jump straight on to configuration to see how to do that. User Projects = Project(project) // Or by providing a second options.through argument when adding the association, containing the data that should go in the join table Project(project, ) // When associating multiple objects, you can combine the two options above.Below are some of the datatypes supported by sequelize. In this case the second argument // will be treated as a defaults object, that will be used if no data is provided project1. Only a single table hint is currently supported per query. // ISJSON - to test if a string contains valid JSON All() // JSON_VALUE - extract a scalar value from a JSON string All() // JSON_VALUE - query a scalar value from a JSON string All() // JSON_QUERY - extract an object or array All() and should only be used when absolutely necessary.