Elasticsearch's search_as_you_type and completion suggester fields in action

search_as_you_type

PUT jobs
{
  "mappings": {
    "properties": {
      "title": {
        "type": "search_as_you_type"
      }
    }
  }
}

POST jobs/_analyze
{
  "field": "title",
  "text": [
    "Senior Software Developer"
  ]
}

POST jobs/_analyze
{
  "field": "title._2gram",
  "text": [
    "Senior Software Developer"
  ]
}

POST jobs/_analyze
{
  "field": "title._3gram",
  "text": [
    "Senior Software Developer"
  ]
}

POST jobs/_analyze
{
  "field": "title._index_prefix",
  "text": [
    "Senior Software Developer"
  ]
}

PUT jobs/_bulk?refresh
{ "index" : {} }
{ "title" : "Software Developer" }
{ "index" : {} }
{ "title" : "Senior Software Developer" }
{ "index" : {} }
{ "title" : "Principal Sofware Developer" }
{ "index" : {} }
{ "title" : "Developer Advocate" }
{ "index" : {} }
{ "title" : "Developer 🥑" }

GET jobs/_search
{
  "query": {
    "match_phrase_prefix": { "title": "developer" }
  }
}

GET jobs/_search
{
  "query": {
    "match_phrase_prefix": { "title": "software dev" }
  }
}

GET jobs/_search
{
  "query": {
    "match_phrase_prefix": { "title": "senior dev" }
  }
}

GET jobs/_search
{
  "query": {
    "multi_match": {
      "query": "senior dev",
      "type": "bool_prefix",
      "operator": "and",
      "fields": [
        "title",
        "title._2gram",
        "title._3gram"
      ]
    }
  }
}

GET jobs/_search
{
  "query": {
    "multi_match": {
      "query": "senior dev",
      "type": "bool_prefix",
      "operator": "or",
      "fields": [
        "title",
        "title._2gram",
        "title._3gram"
      ]
    }
  }
}

GET jobs/_search
{
  "query": {
    "multi_match": {
      "query": "🥑",
      "type": "bool_prefix",
      "operator": "and",
      "fields": [
        "title",
        "title._2gram",
        "title._3gram"
      ]
    }
  }
}

DELETE jobs



PUT jobs_completion
{
  "mappings": {
    "properties": {
      "title": {
        "type": "completion"
      }
    }
  }
}

PUT jobs_completion/_bulk?refresh
{ "index" : {} }
{ "title" : "Software Developer" }
{ "index" : {} }
{ "title" : "Senior Software Developer" }
{ "index" : {} }
{ "title" : "Principal Sofware Developer" }
{ "index" : {} }
{ "title" : "Developer Advocate" }
{ "index" : {} }
{ "title" : "Developer 🥑" }

GET jobs_completion/_search
{
  "suggest": {
    "job-title": {
      "prefix": "software dev",        
      "completion": {         
          "field": "title"  
      }
    }
  }
}

GET jobs_completion/_search
{
  "suggest": {
    "job-title": {
      "prefix": "senior dev",        
      "completion": {         
          "field": "title"  
      }
    }
  }
}

DELETE jobs_completion