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Version: Stable-3.1

parse_url

Description​

Parses a URL and extracts a component from this URL.

Syntax​

parse_url(expr1,expr2);

Parameters​

expr1: the URL. The supported data type is VARCHAR.

expr2: the component to extract from this URL. The supported data type is VARCHAR. Valid values:

  • PROTOCOL
  • HOST
  • PATH
  • REF
  • AUTHORITY
  • FILE
  • USERINFO
  • QUERY. Parameters in QUERY cannot be returned. If you want to return specific parameters, use parse_url with trim to achieve this implementation. For details, see Examples.

expr2 is case-sensitive.

Return value​

Returns a value of the VARCHAR type. If the URL is invalid, an error is returned. If the requested information cannot be find, NULL is returned.

Examples​

select parse_url('http://facebook.com/path/p1.php?query=1', 'HOST');
+--------------------------------------------------------------+
| parse_url('http://facebook.com/path/p1.php?query=1', 'HOST') |
+--------------------------------------------------------------+
| facebook.com                                                 |
+--------------------------------------------------------------+

select parse_url('http://facebook.com/path/p1.php?query=1', 'AUTHORITY');
+-------------------------------------------------------------------+
| parse_url('http://facebook.com/path/p1.php?query=1', 'AUTHORITY') |
+-------------------------------------------------------------------+
| facebook.com                                                      |
+-------------------------------------------------------------------+

select parse_url('http://facebook.com/path/p1.php?query=1', 'QUERY');
+---------------------------------------------------------------+
| parse_url('http://facebook.com/path/p1.php?query=1', 'QUERY') |
+---------------------------------------------------------------+
| query=1                                                       |
+---------------------------------------------------------------+

select trim(parse_url('http://facebook.com/path/p1.php?query=1', 'QUERY'),'query='); 
+-------------------------------------------------------------------------------+
| trim(parse_url('http://facebook.com/path/p1.php?query=1', 'QUERY'), 'query=') |
+-------------------------------------------------------------------------------+
| 1                                                                             |
+-------------------------------------------------------------------------------+