postgresql/doc
Tom Lane 13cd97e6c8 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/156614120484.1310.310161642239149585@wrigleys.postgresql.org
2019-09-23 12:37:04 -04:00
..
src Doc: clarify handling of duplicate elements in array containment tests. 2019-09-23 12:37:04 -04:00
KNOWN_BUGS
Makefile Remove maintainer-check target, fold into normal build 2013-10-10 20:11:56 -04:00
MISSING_FEATURES
TODO Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00