I need to get a comma separated list of ids as a field for a messy third party api :s This is a simplified version of what I am trying to achieve.
| id | na
The easiest on the long term is to use one of the official Vertica UDFs to be found on github at https://github.com/vertica/Vertica-Extension-Packages/tree/master/strings_package which provides a group_concat function. The installation procedure is to found in the README, and examples are even provided.