solr search for documents where a field doesn't exist

问题

How do I search for those document in a SOLR index which do not contain a specified field?

回答1:

-field:[* TO *]

In SolrNet, use a negated SolrHasValueQuery

来源：https://stackoverflow.com/questions/4365369/solr-search-for-documents-where-a-field-doesnt-exist