Re: hstore: add hstore_length function

On Mon, Jun 6, 2016 at 7:57 PM, Korbin Hoffman <k1@k1.io> wrote:
> With regards to your second point- I've been maintaining consistency
> with the rest of the hstore module. Hstore's _size is internally
> stored as a uint, but all uses of HS_COUNT across the feature end up
> stored in a signed int. I could only find (grep) a few occurrences of
> PG_RETURN_UINT32 across the entire codebase, and none in the hstore
> module. If there's strong consensus for change, though, I'm happy to
> do so.

The PG_RETURN_BLAH macro chosen should match the declared return type
of that function.  So if your function, for example, returns int4 (or
integer, which is the same thing), PG_RETURN_INT32 is correct.

There are no built-in SQL datatypes for unsigned integers, which is
why you did not find many uses of PG_RETURN_UINT32 in the code base.

-- 
Robert Haas
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