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The syntax is:

flags:has_[SOLRSolr Indexed Field Name]


Flags are useful when you want to find all documents which contain a particular field. For example, you can use the has_cpcl flag to retrieve documents that have CPC classification, or the has_pcit flag to find documents which contain patent citations. Any indexed field can be used in a flag search, with the exception of fam since a default value of -1 is assigned to all records which do not contain a DocDBDOCDB-assigned family-id.


Info

To return all documents that have a DocDBDOCDB-assigned family-id, you can use the following workaround:

fam:[1 TO *]

Note that this search does not indicate the number of family members. It simply returns records which have a family-id, i.e., are themselves members of a family (which may be a one-member family).

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The syntax for a language-specific query is:

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