Using Views for a custom table with multi-value fields

I have a custom table with two columns – the primary is simply entity IDs (nids), and then there is a data column, but it it can be a multi-value (from 1 to anything).

How can I structure the MySQL table and create a view that will blend a list of entities (nodes in my case) with data from the custom table without losing their multi-value character (probably using relationship)? Basically I need to achieve that next to a node with a given field I can also show data (separated by commas or otherwise) from the multi-value column from my custom table.

There is some excellent help about doing this with single-value columns at Using views with a custom table/schema but I guess it is a bit more tricky with multi-values.

This article was republished from its original source.
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