Column on the foreign table used for the join (string key or property accessor)
OptionalforeignOptional Knex query builder for the foreign table — auto-derived from foreignSchema's tableName if omitted
Foreign schema for type inference
Column on the local (base) table used for the join (string key or property accessor)
OptionalmappersOptional post-load value transformers per foreign column
OptionalrequiredIf true (default), uses INNER JOIN; if false, uses LEFT JOIN (result may be null)
Name of the field that will hold the loaded object in the result