Doc: clarify handling of duplicate elements in array containment tests. The array <@ and @> operators do not worry about duplicates: if every member of array X matches some element of array Y, then X is contained in Y, even if several members of X get matched to the same Y member. This was not explicitly stated in the docs though, so improve matters.
Discussion: https://postgr.es/m/[email protected] Branch ------ REL9_4_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/70c12450641bed8ab510f0fea2f97b6b747837b7 Modified Files -------------- doc/src/sgml/func.sgml | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-)
