| From: | Peter Eisentraut <peter(at)eisentraut(dot)org> |
|---|---|
| To: | Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, Ayush Tiwari <ayushtiwari(dot)slg01(at)gmail(dot)com> |
| Cc: | SATYANARAYANA NARLAPURAM <satyanarlapuram(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: [Bug]Assertion failure in LATERAL GRAPH_TABLE with multi-label pattern |
| Date: | 2026-06-05 07:35:52 |
| Message-ID: | 29e94b99-7190-4d72-b465-c1b7842fab34@eisentraut.org |
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| Lists: | pgsql-hackers |
On 02.06.26 13:02, Ashutosh Bapat wrote:
> Yes, fix is at the right place. We can not set the varlevelsup to the
> correct value in replace_properties_references itself because when
> that function is called, we do not know whether UNION is required or
> not. The next place to adjust varlevelsup is when creating a UNION
> statement.
>
> Depending upon the varno of outer reference we will see different
> symptoms. a crash or an error "plan should not reference subplan's
> variable" or even data type mismatch. Also the levelsup is maintained
> in nodes other than Var. I have modified the commit message to focus
> on the problem instead of the symptom. Also some small edits to the
> comments.
>
> Attached patch has the number 0010 (vs 0001) since I am creating
> patches for all the SQL/PGQ fixes from the same branch. It can be
> applied independent of other patches.
committed
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