MarkLogic 12 Product Documentation
cts:field-value-query-field-name

cts:field-value-query-field-name(
   $query as cts:field-value-query
) as xs:string*

Returns the names used to construct the specified cts:field-value-query.

Parameters
query	A query.

let $query := cts:field-value-query("myField", "choice of law")
return
cts:field-value-query-field-name($query)

=> "myField"

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MarkLogic 12 Product Documentationcts:field-value-query-field-name