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LINK field specifier (case sensitive) allows you to link a query to a document of a different type to find results. For example, it allows you to link a query to interests in a user profile.
You use the
LINK specifier to specify a
field that references the documents that you want to link the query to. The
LINK specifier links result documents that have one value in this field to documents that have the same value in a
field. You must also specify the
parameter, to specify the field values that you want to find in the documents that the
LINK field references.
This query returns documents that contain the term
Brazil. In the matching documents, it links the value of the
USERREF field to documents that have the same value in the reference field. The final results set contains only documents that contain the term
Brazil, where the linked document contains an
INTEREST field with the value
For example, if the
USERREF field contains a username, which also occurs in the reference field of a user profile, this query finds documents about Brazil by users whose user profile lists
FOOTBALL as an interest. This method might help restrict results to documents about the Brazilian world cup, rather than the film Brazil.