>>> Tom Lane <[EMAIL PROTECTED]> wrote: > If it's going to take a significant amount of work then I think someone > ought to provide an actual justification why it's worth the work. This by itself doesn't justify the effort, but I've worked with databases which would refuse to allow comparison (including within JOIN conditions) of values if they were in different domains, and I miss that. It would occasionally keep people from making dumb mistakes that wasted time. It would also be nice to be able to prevent inappropriate use of data, as previously mentioned. I'm afraid I don't have any interest less mundane than that, and ease of use would need to be there in order for it to be useful. I would actually like to see comparisons to literals or expressions of the base type work, although that doesn't seem to be in line with the SQL spec, and I suspect it might not play nice with the implicit casting. -Kevin
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