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Retrieves a list of distinct values for a given field for all items that match the query, without duplicates.
As with the Query Data Items endpoint, this endpoint retrieves items based on the filtering, sorting, and paging preferences provided.
However, the Query Distinct Values endpoint doesn't return the full items that match the query. Rather, for items that match the query, it returns all unique values in the field specified in fieldName. If more than one item has the same value in that field, that value appears only once.
See API Query Language for more information about handling data queries.