Sam Mason <s...@samason.me.uk> wrote: > you were requiring the types of literals that happened to be > enclosed in quotes to have their type ascribed, so why not the NULL > literal? Well, unless things have changed in recent versions of the standard and I've missed the change, a series of characters enclosed in apostrophes is what the standard calls a "character string literal" and defines it to be be related to character based types such as varchar. As far as I'm aware, considering it to be undefined is a PostgreSQL extension. If you can point to something in the standard to show where I'm mistaken, I'll look it over. I'll go looking for something to back my memories on the topic, too, since my memory seems to be less reliable than it once was..... -Kevin
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