Re: [GENERAL] 'a' == 'a '

Is there any TODO here?

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Tom Lane wrote:
> "Dann Corbit" <DCorbit(at)connx(dot)com> writes:
> > I guess that additional ambiguity arises if you add additional spaces to
> > the end. Many database systems solve this by trimming the characters
> > from the end of the string upon storage and the returned string will not
> > have any trailing blanks.
>
> Can you document that? ISTM that that would effectively make char(n)
> and varchar(n) exactly equivalent, which is ... um ... a bit stupid.
>
> regards, tom lane
>
> ---------------------------(end of broadcast)---------------------------
> TIP 9: In versions below 8.0, the planner will ignore your desire to
> choose an index scan if your joining column's datatypes do not
> match
>

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