Tom Lane <t...@sss.pgh.pa.us> wrote: > "Kevin Grittner" <kevin.gritt...@wicourts.gov> writes: >> Tom Lane <t...@sss.pgh.pa.us> wrote: >>> Joseph Shraibman <j...@selectacast.net> 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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