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How to retrieve specific values from a document reference in GROQ query.

Hello Dev
I only want to get "NextJS" of the title from the reference of the tag in the document of "gorq", how do you guys solve it?


export default defineType({
  name: 'contents',
  title: 'Contents',
  type: 'document',
  fields: [
    defineField({
      name: 'tags',
      title: 'Tags',
      type: 'array',
      of: [{type: 'reference', to: [{type: 'tags'}]}],
    }),
  ],
})

*[_type == "contents" &amp;&amp; tags[]-&gt; title == "NextJS" ] {
...
}

The GROQ looks correct. What issue are you facing and what are the actual and expected results? If you are looking to retrieve only specific values from the result, you can use 

*[_type == "contents" &amp;&amp; tags[]-&gt;title == "NextJS"] {
 _id,
 title,
 "Titles": tags[]-&gt;title,
}

*[_type == "contents" ] {
 tags[]-&gt;{
   title
 }
}

**result**
  0:{…} 1 property
  tags:null
  1:{…} 1 property
    tags:[…] 2 items
      0:{…} 1 property
    title:flutter
      1:{…} 1 property
    title:NextJS
  2:{…} 1 property
    tags:null
  3:{…} 1 property
    tags:[…] 2 items
      0:{…} 1 property
        title:zustand
      1:{…} 1 property
        title:NextJS
  4:{…} 1 property
    tags:null
  5:{…} 1 property
    tags:null

If you do this, you'll get it, but if you use the one 

*[_type == "contents" &amp;&amp; tags[]-&gt;title match "NextJS"] {
 "Titles": tags[]-&gt;title,
}

How to retrieve specific values from a document reference in GROQ query.

Sanity – Build the way you think, not the way your CMS thinks

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