I would like to write my own function to post-process item on the result of a select. The YQL guide appears the **Function Element **(https://developer.yahoo.com/yql/guide/yql-opentables-reference.html#reference-function) to do that but there is no more information about the syntax or an example to mimic it. The "see Creating YQL Customized Functions" link doesn't work and the bult-in functions (e.g. sort) don't show the syntax.
Could you give me an example to learn to make my own functions?? Thanks.