hard20 pts · first answer countsandroidroom

Loading orders with their items

A DAO returns OrderWithItems using @Relation. Why should the query method be annotated with @Transaction?

A.@Relation is ignored unless @Transaction is presentB.@Transaction makes the query run on the main threadC.It turns the query into a single SQL JOIND.Room runs several queries; @Transaction keeps them consistent

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Loading orders with their items

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