Looking to pass a list of User IDs to return a list names. I have a plan to handle the outputed names (with a COALESCE something or other) but trying to find the best way to
Azure DB, Azure Data WH and from SQL Server 2016, you can use STRING_SPLIT to achieve a similar result to what was described by @sparrow.
Recycling code from @sparrow
WHERE user_id IN (SELECT value FROM STRING_SPLIT( @user_id_list, ',')
Simple and effective way of accepting a list of values into a Stored Procedure