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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 15:12:08 -0400 |
| commit | 4b10074453d182b5fc11a5667bab2ef8532ff3a6 (patch) | |
| tree | be4710e2a55e33fd1502937895acc0ee0a24e904 /src/backend/commands/trigger.c | |
| parent | 2b0ee126bbf01cbfd657bd53c94f9284ba903ca2 (diff) | |
| download | postgresql-4b10074453d182b5fc11a5667bab2ef8532ff3a6.tar.gz postgresql-4b10074453d182b5fc11a5667bab2ef8532ff3a6.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/backend/commands/trigger.c')
0 files changed, 0 insertions, 0 deletions