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I need to implement multiple columns as keys. I know that I can create a column which concatenates the composite key columns and hide the column. But when I want to insert a new row the user would have to enter the concatenated key. I want the key to be autogenerated as a concatenation of the keys. Is there a way to do this currently? Also if I want to modify any of the keys, I would have to check if it does not violate the unique constraint by concatenating the key columns.
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