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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 | abcb32d55ed8da8c158936d5a48a0c3b84bfe3ff (patch) | |
| tree | d7e8737d8097ba304703737e98903fbc9e44c3f0 /src/backend/regex/regprefix.c | |
| parent | dd48a39388497e91e537cd34190be2dcc6179296 (diff) | |
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 'src/backend/regex/regprefix.c')
0 files changed, 0 insertions, 0 deletions