# SQL Vs. Query DSL

**URL:** <https://discuss.elastic.co/t/sql-vs-query-dsl/298384>\
**Category:** Elasticsearch\
**Created:** [February 28, 2022, 8:59am UTC](https://discuss.elastic.co/t/sql-vs-query-dsl/298384 "2022-02-28T08:59:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![avnere](https://avatars.discourse-cdn.com/v4/letter/a/ba8739/32.png) [@avnere](https://discuss.elastic.co/u/avnere)\
**Post date:** [February 28, 2022, 8:59am UTC](https://discuss.elastic.co/t/sql-vs-query-dsl/298384/1 "2022-02-28T08:59:51Z")

</div>

Hi,

I see huge difference in the performance when running the same query in the different approach.

SQL:

```auto
GET _sql?format=json
{
  "query": """
  SELECT * FROM "baseelements" 
  WHERE "sessionId" = '621786a4186dc944ccb0729b' AND "streamName" = 'rwr' AND "source" = 'FW'
  ORDER BY "_instance"
  """
}

```

performed in **4560** ms.

DSL:

```auto
GET baseelements/_search
{
  "query": {
    "bool": {
        "must": [
            { "match": { "sessionId" : "621786a4186dc944ccb0729b" }},
            {"match": { "streamName.keyword": "rwr"}},
            {"match": { "source": "FW"}
    }
        ]
    }
  }
, "sort": [
    {
      "_instance": {
        "order": "asc"
      }
    }
  ]
}

```

Performed in **250** ms.

Why do I see this huge difference?

Thanks,  
Avner

---

<div class="post-metadata">

**Author:** ![casterQ](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/casterq/32/93257_2.png) [@casterQ](https://discuss.elastic.co/u/casterQ)\
**Post date:** [February 28, 2022, 10:13am UTC](https://discuss.elastic.co/t/sql-vs-query-dsl/298384/2 "2022-02-28T10:13:33Z")

</div>

1. you can use [SQL Translate API](https://www.elastic.co/guide/en/elasticsearch/reference/7.10/sql-translate.html) to translate your SQL to DSL and find their difference。
2. And you can use [Profile API](https://www.elastic.co/guide/en/elasticsearch/reference/current/search-profile.html) to get detailed timing information about the execution of individual components in a search request。
3. And when doing the comparison test，make sure that the second query request does not use the first query cache，you can change query criteria or clear the cache。

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [March 28, 2022, 10:14am UTC](https://discuss.elastic.co/t/sql-vs-query-dsl/298384/3 "2022-03-28T10:14:24Z")

</div>

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