The
Nr
parameter sets a record filter for a navigation query.
When used with an EQL request, the
Nr
parameter acts as a prefilter. That is, it restricts
the set of records that are visible to the
Nrs
parameter. Because it is a prefilter, the
Nr
parameter is especially useful as a security filter
to control the records that a user can see. It is also useful to explicitly
exclude certain records from being considered in the rest of the query (for
example, for spelling suggestions).
When using the
Nr
parameter, keep in mind that only the records that
pass the
Nr
filter are even considered in
Nrs
. For example, if you have Book records and Author
records, both of these record types would have to pass the
Nr
record filter logic in order for the
Nrs
parameter to determine relationships between Books
and Authors.