Re: [HACKERS] _text problem in union

> Bruce Momjian wrote:
> >
> > > abil=> select '{"aaa"}'::_text union select '{"bbb"}'::_text;
> > > ERROR: Unable to identify an ordering operator '<' for type '_text'
> > > Use an explicit ordering operator or modify the query
> > > abil=>
> >
> > Good problem description. Seems we can't compare arrays of text fields.
> >
> > Seems if we have an array of text fields, we could compare each element
> > one-by-one using the base type until we get a comparison result.
> >
> > Not sure if this should make the TODO list or not.
>
> It woulf be better to have a generic array compare op, that just
> traverses
> both arrays comparing them with the "<" for base type

Yes, that was my idea. Is this a worthy TODO item?

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