> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sdf.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Url Functions

## `url_decode`

Unescapes the URL encoded value. This function is the inverse of url\_encode().

*Supported Signatures*

```sql theme={null}
function url_decode(varchar) returns varchar
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/url.html#url_decode)

## `url_encode`

Escapes value by encoding it so that it can be safely included in URL query parameter names and values.

*Supported Signatures*

```sql theme={null}
function url_encode(varchar) returns varchar
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/url.html#url_encode)

## `url_extract_fragment`

Returns the fragment identifier from url.

*Supported Signatures*

```sql theme={null}
function url_extract_fragment(varchar) returns varchar
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/url.html#url_extract_fragment)

## `url_extract_host`

Returns the host from url.

*Supported Signatures*

```sql theme={null}
function url_extract_host(varchar) returns varchar
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/url.html#url_extract_host)

## `url_extract_parameter`

Returns the value of the first query string parameter named name from url. Parameter extraction is handled in the typical manner as specified by RFC 1866#section-8.2.1.

*Supported Signatures*

```sql theme={null}
function url_extract_parameter(varchar, varchar) returns varchar
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/url.html#url_extract_parameter)

## `url_extract_path`

Returns the path from url.

*Supported Signatures*

```sql theme={null}
function url_extract_path(varchar) returns varchar
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/url.html#url_extract_path)

## `url_extract_port`

Returns the port number from url.

*Supported Signatures*

```sql theme={null}
function url_extract_port(varchar) returns bigint
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/url.html#url_extract_port)

## `url_extract_protocol`

Returns the protocol from url.

*Supported Signatures*

```sql theme={null}
function url_extract_protocol(varchar) returns varchar
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/url.html#url_extract_protocol)

## `url_extract_query`

Returns the query string from url.

*Supported Signatures*

```sql theme={null}
function url_extract_query(varchar) returns varchar
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/url.html#url_extract_query)