Tom Lane <[email protected]> wrote: > "Kevin Grittner" <[email protected]> writes: >> Tom Lane <[email protected]> wrote: >>> Joseph Shraibman <[email protected]> writes: >>>> So the type of what is in the ELSE clause determines the type of >>>> the output? >>> >>> If all the other branches are unknown literals, yes. > >> What's the best place to look to get a handle on what the benefits >> are of treating character string literals as being of unknown type? >> (Other than the obvious backward compatibility issues.) > > I think the odds of changing that are not measurably different from > zero. I figured that; I'm just trying to understand what seems to me like an odd wart on the type system. I figure I must be missing something important, so I'd kinda like to find out what that is. -Kevin
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