h012@ied.com writes:
> w.r.t. modifying the array contents: I looked through
> /usr/lib/pgsql/contrib/intarray/_int.sql.in , but it didn't make me any
> smarter. Are the "..._union" and "..._picksplit" functions supposed to add
> into and remove elements from the arrays ?
No, those are support functions for GIST indexes on intarrays. They're
not useful to call directly.
regards, tom lane