How to set multiple fields as uniqueKey in solr?
问题 I have these fields in my solr schema : <fields> <field name="Id" type="string" indexed="true" stored="true" multiValued="false" required="true" /> <field name="IdCategory" type="string" indexed="true" stored="true" multiValued="false" required="true" /> <field name="Rank" type="long" indexed="true" stored="true" multiValued="false" required="true" /> <field name="TypeRank" type="string" indexed="true" stored="true" multiValued="false" required="false" default="category" /> <field name="