Return SOLR response only if date is present

Question

I have 10 documents in solr. Out of 10 documents, only 8 documents have a field called date. I need a query to fetch only the documents that has date present in it. I already tried with fq=date:* but this is returning 0 results. Any leads would be appreciated.

Answer 1

Tried something like fq=date:[* TO *] and it seems to work !