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How to create merged column headers in Matrix visual?
I would like to create a Matrix visual that looks like below where I have merged column headers (cars, trucks, suv's). How can I add the merged headers?
Do those tables share the same structure? If they do, it would be better to combine them into a single table with an additional column to indicate the vehicle type. You can use the append feature in the query editor.
I wish you have explained it upfront. Better to combine (append) these tables as one table and then use what I suggested in my original reply.