> ## Documentation Index
> Fetch the complete documentation index at: https://private-7c7dfe99-fix-nav-issues.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Alternative query languages

> Use alternative query languages in ClickHouse

export const ExperimentalBadge = () => {
  return <div className="experimentalBadge">
            <div className="experimentalIcon">
            <svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
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            </svg>
        </div>
            Experimental feature. <u><a href="/docs/beta-and-experimental-features#experimental-features">Learn more.</a></u>
        </div>;
};

Besides standard SQL, ClickHouse supports various alternative query languages for querying data.

The currently supported dialects are:

* `clickhouse`: The default [SQL dialect](/products/chdb/reference/sql-reference) of ClickHouse
* `prql`: [Pipelined Relational Query Language (PRQL)](https://prql-lang.org/)
* `kusto`: [Kusto Query Language (KQL)](https://learn.microsoft.com/en-us/azure/data-explorer/kusto/query)

Which query language is used is controlled by setting `dialect`.

<h2 id="standard-sql">
  Standard SQL
</h2>

Standard SQL is the default query language of ClickHouse.

```sql theme={null}
SET dialect = 'clickhouse'
```

<h2 id="pipelined-relational-query-language-prql">
  Pipelined relational query language (PRQL)
</h2>

To enable PRQL:

```sql theme={null}
SET allow_experimental_prql_dialect = 1; -- this SET statement is required only for ClickHouse versions >= v25.1
SET dialect = 'prql'
```

Example PRQL query:

```prql theme={null}
from trips
aggregate {
    ct = count this
    total_days = sum days
}
```

Under the hood, ClickHouse uses transpilation from PRQL to SQL to run PRQL queries.

<h2 id="kusto-query-language-kql">
  Kusto query language (KQL)
</h2>

To enable KQL:

```sql theme={null}
SET allow_experimental_kusto_dialect = 1; -- this SET statement is required only for ClickHouse versions >= 25.1
SET dialect = 'kusto'
```

```kql title="Query" theme={null}
numbers(10) | project number
```

```response title="Response" theme={null}
┌─number─┐
│      0 │
│      1 │
│      2 │
│      3 │
│      4 │
│      5 │
│      6 │
│      7 │
│      8 │
│      9 │
└────────┘
```

Note that KQL queries may not be able to access all functions defined in ClickHouse.