diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2019-09-23 12:37:04 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2019-09-23 12:37:04 -0400 |
| commit | 216bcf583802011365b8bb038b4e73f143e857b2 (patch) | |
| tree | 4346408695386c8f2d9b53a6a238ab429430546d /src/include/postgres.h | |
| parent | a25fb9ceb1a63d4383370d4a017aa572d8e99b42 (diff) | |
| download | postgresql-216bcf583802011365b8bb038b4e73f143e857b2.tar.gz postgresql-216bcf583802011365b8bb038b4e73f143e857b2.zip | |
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
Diffstat (limited to 'src/include/postgres.h')
0 files changed, 0 insertions, 0 deletions