Description
Converts a string field that contains a URL query string (...?key1=value1&key2=value2) to a map of key:value pairs. From the map you can extract fields using the map notation:
map#'fieldname'
Syntax
QueryStringToMap(string_expression)
Examples
QueryStringToMap('http://someurl/?origin=135&origin=246&id=321') returns [origin#'135,246',id#'321'] which is a map with two keys: origin and id. Note that the value for origin contains both values from the original query string separated by comma.
Notes
If the input string contains a question mark (?) then the part that follows will be processed ("&" is used to split pairs and "=" is used to split keys and values). If the input string does not contain a question mark, the entire string will be processed in the same manner.
Return value datatype
Map of string values
Impact of null value
If input is null, returns an empty map.