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# FieldRestriction

Type one or more fields. Unless a query term already has a field restriction, each query restricts the term by the specified fields (that is, the query returns only results that contain each of the terms in each of the specified fields).

To specify that the fields in the `FieldRestriction` parameter are the only fields that the query can use in the matching process for both the Text and FieldText action parameters, set the HardFieldRestriction parameter to `true`.

In complex expressions, Distributed Action Handler applies the `FieldRestriction` parameter after all other field restrictions in the expression. For example:

    Text=frog+(fish+toad:AMPHIBIAN):VERTEBRATE&FieldRestriction=ANIMAL

is equivalent to the following expression:

    Text=frog:ANIMAL+(fish:VERTEBRATE+toad:AMPHIBIAN)

In this example, if you also set HardFieldRestriction to `true`, it returns results only for the `frog:ANIMAL` term and restriction.

Actions: | Query
Type: | String
Default: |
Example: |
    FieldRestriction=CREATURE:FAUNA
In this example, if the query text is `cat+dog:ANIMAL+rabbit`, the specified `FieldRestriction` is applied to the terms `cat` and `rabbit` but not applied to the term `dog` (because it already has a field restriction). The query only returns documents if they contain the value `dog` in an `ANIMAL` field, the value `cat` in a `CREATURE` or `FAUNA` field or the value `rabbit` in a `CREATURE` or `FAUNA` field.
See Also: | HardFieldRestriction

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