In my solr admin i am quering like this -

http:// :8080/solr/realestatecategory/select?q=*%3A*&fl=propcategory&wt=json&indent=true 

it returns me records like 

```
{
  "responseHeader":{
    "status":0,
    "QTime":4},
  "response":{"numFound":4,"start":0,"docs":[
      {
        "propcategory":"Residential Property"},
      {
        "propcategory":"Residential Property"},
      {
        "propcategory":"Commercial Property"},
      {
        "propcategory":"Invest"}]
  }}

```

i want to avoid duplicate records like "Residential Property". how to do that ?

answer the question quickly as i badly need help.