https://learninghub.kx.com/forums/topic/virtual-select-distinct-list-from-datasource
This is a problem that I’ve come across a few times now and my javascript skills just aren’t up to the task.
What code do I need to create a virtual datasource that takes in a table and outputs a distinct list from a column of that table?
I’m able to extract a column from a datasource using
function (source, callback) { var result = { “columns”: [ “exchangeName”, ], “meta”: { “exchangeName”: 11 }, “rows”: } result.rows= _.map(source.rows, function(row) { return { “exchangeName”: row.exchangeName, }}); callback(result); }