Re: Implicit casts with generic arrays

Zeugswetter Andreas DCP SD <zeugswettera@spardat.at>

From: "Zeugswetter Andreas ADI SD" <ZeugswetterA@spardat.at>
To: "Tom Lane" <tgl@sss.pgh.pa.us>, "Peter Eisentraut" <peter_e@gmx.net>
Cc: <pgsql-hackers@postgresql.org>
Date: 2007-06-06T07:36:41Z
Lists: pgsql-hackers
> For example in 8.2 this is mapped to array_prepend:
> 
> regression=# select 'x'::text || array['aa','bb','cc'];
>    ?column?
> --------------
>  {x,aa,bb,cc}
> (1 row)
> 
> but with the experimental code you get textcat:
> 
> catany=# select 'x'::text || array['aa','bb','cc'];
>   ?column?
> -------------
>  x{aa,bb,cc}
> (1 row)

This is what I would have expected || to give, and not what 8.2 does.
So disregarding the rest of the argument I think that array_[pre|ap]pend
should have other operators.

Andreas