I have a query returning:
name | product_id
Bob | 1
Bob | 2
Charles | 1
Charles | 4
To make it compatible with a legacy app, I need to convert it to this form:
name | product_ids
Bob | "1,2"
Charles | "1,4"
(Before you jump "That's not normal!" - I know. I didn't write the
app. I just need to meet its interface.)
What's the best way to do this in Postgres? Is there a way to do it
via pure SQL?