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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2021-05-21 15:12:08 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2021-05-21 15:12:19 -0400 |
| commit | 849c7971d1abe39d9105a768918c110414029e48 (patch) | |
| tree | 242f575efbda25d483681a061d24d75eb639388c /src/common/file_utils.c | |
| parent | 77e3204ecbf15ab5dfd295bbc66eeeec4d9ade19 (diff) | |
| download | postgresql-849c7971d1abe39d9105a768918c110414029e48.tar.gz postgresql-849c7971d1abe39d9105a768918c110414029e48.zip | |
Disallow whole-row variables in GENERATED expressions.
This was previously allowed, but I think that was just an oversight.
It's a clear violation of the rule that a generated column cannot
depend on itself or other generated columns. Moreover, because the
code was relying on the assumption that no such cross-references
exist, it was pretty easy to crash ALTER TABLE and perhaps other
places. Even if you managed not to crash, you got quite unstable,
implementation-dependent results.
Per report from Vitaly Ustinov.
Back-patch to v12 where GENERATED came in.
Discussion: https://postgr.es/m/CAM_DEiWR2DPT6U4xb-Ehigozzd3n3G37ZB1+867zbsEVtYoJww@mail.gmail.com
Diffstat (limited to 'src/common/file_utils.c')
0 files changed, 0 insertions, 0 deletions