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Re: Case Insensitive Foreign Key Constraint

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I would probably just have a check constraint that prevented the
relevant PK field from being lower case in the first place. I had to
do that recently, but my approach reflected the business rules.

You may prefer to use citext:

http://www.postgresql.org/docs/current/interactive/citext.html

-- 
Regards,
Peter Geoghegan

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