How can a record be neither NULL or NOT NULL?
try=# select ROW(1, NULL) IS NULL; ?column? ---------- f (1 row)
try=# select ROW(1, NULL) IS NOT NULL; ?column? ---------- f (1 row)
This makes it rather hard to tell, in PL/pgSQL, when I've fetched the
last record from a cursor…
Best,
David
