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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 | ddcc256caf5523d5b856b2f461178f2711bcd345 (patch) | |
| tree | 8892e9a5ae5be0a46e4fa68107385907bcf9ccee /src/backend/regex/regcomp.c | |
| parent | 3d6c9888900a31553720b241f2beb7ca2cd826d2 (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/regcomp.c')
0 files changed, 0 insertions, 0 deletions