Re: PG 12 hstore creation cast issue

Wells Oliver <wells(dot)oliver(at)gmail(dot)com> writes:
> We have this kind of code that worked in 9.6:

> select hstore(array['foo'], array[1.0::numeric]);

> But now yields:

> ERROR: function hstore(text[], numeric[]) does not exist
> LINE 1: select hstore(array['foo'], array[1.0::numeric]);
> ^
> HINT: No function matches the given name and argument types. You might
> need to add explicit type casts.

> Is there a way to create hstores with numeric types as data? Does
> everything need to be cast as text?

For me, that query fails that way in 9.6 too. This is unsurprising
because the only two-argument variants of hstore() are

hstore(text, text)
hstore(text[], text[])

both in 9.6 and current. I suppose that this case was getting
covered by one of those implicit casts you got rid of, allowing
numeric[] to be silently cast to text[].

regards, tom lane