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Version: v1

URL Functions

Extraction Functions​

The URL extraction functions extract components from HTTP URLs (or any valid URIs conforming to 2396). The following syntax is supported:

[protocol:][//host[:port]][path][?query][#fragment]

The extracted components do not contain URI syntax separators such as : or ?.

url_extract_fragment(url) -> varchar​

Returns the fragment identifier from url.

url_extract_host(url) -> varchar​

Returns the host from url.

url_extract_parameter(url, name) -> varchar​

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

url_extract_path(url) -> varchar​

Returns the path from url.

url_extract_port(url) -> bigint​

Returns the port number from url.

url_extract_protocol(url) -> varchar​

Returns the protocol from url.

url_extract_query(url) -> varchar​

Returns the query string from url.

Encoding Functions​

url_encode(value) -> varchar​

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

  • Alphanumeric characters are not encoded.
  • The characters ., -, * and _ are not encoded.
  • The ASCII space character is encoded as +.
  • All other characters are converted to UTF-8 and the bytes are encoded as the string %XX where XX is the uppercase hexadecimal value of the UTF-8 byte.

url_decode(value) -> varchar​

Unescapes the URL encoded value. This function is the inverse of url_encode.