I want to do something like this:
ALTER TABLE companies ADD CONSTRAINT fk_companies_item_id
FOREIGN KEY (item_id, 'Company')
REFERENCES item_bases(item_id, item_type)
INITIALLY DEFERRED
I could add a column to companies that is always set to "Company" but that seems like a waste. I tried the above and I got a syntax error.
Any suggestions?
Thank you,
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