As briefly mentioned in [the associations guide](assocs.html), eager Loading is the act of querying data of several models at once (one 'main' model and one or more associated models). At the SQL level, this is a query with one or more [joins](https://en.wikipedia.org/wiki/Join_(SQL)).
As briefly mentioned in [the associations guide](assocs.html), eager Loading is the act of querying data of several models at once (one 'main' model and one or more associated models). At the SQL level, this is a query with one or more [joins](https://en.wikipedia.org/wiki/Join_\(SQL\)).
When this is done, the associated models will be added by Sequelize in appropriately named, automatically created field(s) in the returned objects.
