Is this a TODO item?  Seems so.  Comments?

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Tom Lane wrote:
> "Mark Jeacocke" <[EMAIL PROTECTED]> writes:
> > select DISTINCT TABLEID, '' AS ALIAS from TABLE; :FAILS
> 
> We get this type of complaint regularly.  Perhaps DISTINCT should
> resolve unknown-type inputs to "text", much as we do with CASE
> and UNION constructs when we see an untyped literal.  Thoughts?
> 
>                       regards, tom lane
> 
> PS: in the meantime, Mark, try casting the literal to text.
> 
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