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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2016-02-07 16:02:44 -0500 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2016-02-07 16:02:44 -0500 |
| commit | c477e84fe2471cb675234fce75cd6bb4bc2cf481 (patch) | |
| tree | edae42dba0111b3dcfe6557ef49a7eb944f332c0 /contrib/postgres_fdw | |
| parent | cc2ca9319a5dbe89ea47d87944650e65e3bb4ce8 (diff) | |
| download | postgresql-c477e84fe2471cb675234fce75cd6bb4bc2cf481.tar.gz postgresql-c477e84fe2471cb675234fce75cd6bb4bc2cf481.zip | |
Improve documentation about PRIMARY KEY constraints.
Get rid of the false implication that PRIMARY KEY is exactly equivalent to
UNIQUE + NOT NULL. That was more-or-less true at one time in our
implementation, but the standard doesn't say that, and we've grown various
features (many of them required by spec) that treat a pkey differently from
less-formal constraints. Per recent discussion on pgsql-general.
I failed to resist the temptation to do some other wordsmithing in the
same area.
Diffstat (limited to 'contrib/postgres_fdw')
0 files changed, 0 insertions, 0 deletions