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a1c37421a8
Back in the days before a91e2fa94, hash_any() was the primary hash
function and it returned a Datum. That commit changed hash_any() to a
wrapper over hash_bytes(). Some places actually wanted the underlying
uint32 from hash_bytes(), but that now presents as useless round-trip
casting, so update the call sites where we don't immediately need a
Datum.
hash_numeric() didn't have round-trip casting, but it was internally
inconsistent: Paths returning a constant used PG_RETURN_UINT32(), but
the path using the result of hash_any() used PG_RETURN_DATUM. Change
it to use uint32 throughout.
Author: Aleksander Alekseev <aleksander@tigerdata.com>
Suggested-by: John Naylor <johncnaylorls@gmail.com>
Reviewed-by: Zsolt Parragi <zsolt.parragi@percona.com>
Discussion: https://postgr.es/m/CAJ7c6TMPhDRQMmkUHPv8oOK97B1mR8NRS61DgjpdaZUPAwaeZQ%40mail.gmail.com