仅在SOLR中选择4个令牌时显示唯一结果

Question

我收到SOLR的以下回复，仅选择了以下令牌，大约还有10个令牌，这将使每个令牌都唯一。我要在查询中添加些什么以获得对于响应是唯一的结果？

由于无法使用任何列，因此无法进行分组。 CURRENCYCODE，CLIENTCODE和LANGUAGECODE的组合可用于分组，但我不知道该如何进行。

    {
  "response":{"numFound":6,"start":1,"docs":[
      {
        "PRODUCTNAME":"Office Chair",
        "CURRENCYCODE":"EUR",
        "CLIENTCODE":"Northwind Inc",
        "LANGUAGECODE":"ENG",
        "KEYWORDS":"spins, adjust, castors"}
      {
        "PRODUCTNAME":"Office Chair",
        "CURRENCYCODE":"EUR",
        "CLIENTCODE":"Northwind Inc",
        "LANGUAGECODE":"ENG",
        "KEYWORDS":"spins, adjust, castors"}
      {
        "PRODUCTNAME":"Office Chair",
        "CURRENCYCODE":"EUR",
        "CLIENTCODE":"Northwind Inc",
        "LANGUAGECODE":"ENG",
        "KEYWORDS":"spins, adjust, castors"}
      {
        "PRODUCTNAME":"Office Chair",
        "CURRENCYCODE":"EUR",
        "CLIENTCODE":"Northwind Inc",
        "LANGUAGECODE":"ENG",
        "KEYWORDS":"spins, adjust, castors"}
      {
        "PRODUCTNAME":"Office Chair",
        "CURRENCYCODE":"EUR",
        "CLIENTCODE":"Northwind Inc",
        "LANGUAGECODE":"ENG",
        "KEYWORDS":"spins, adjust, castors"}
      {
        "PRODUCTNAME":"Office Chair",
        "CURRENCYCODE":"EUR",
        "CLIENTCODE":"Northwind Inc",
        "LANGUAGECODE":"ENG",
        "KEYWORDS":"spins, adjust, castors"}]
  }}