| From: | Andrey Rachitskiy <pl0h0yp1(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | i(dot)portnov(at)compassplus(dot)com, pgsql-bugs(at)lists(dot)postgresql(dot)org |
| Subject: | Re: BUG #19487: Error while executing SQL query involving XML parsing |
| Date: | 2026-08-30 03:08:19 |
| Message-ID: | CAB8bMivhR6_d33YFc-cAKT-Qa8Vj8MHicVUexyJSySTi+c4k_g@mail.gmail.com |
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| Lists: | pgsql-bugs |
вс, 30 авг. 2026 г. в 02:44, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>:
> Andrey Rachitskiy <pl0h0yp1(at)gmail(dot)com> writes:
> > In v2, I tried to take all the points into account and expanded the
> tests.
>
> Hmm, I think it might be better to drop
> map_sql_value_to_xml_is_immutable and just treat XMLELEMENT and
> XMLFOREST as non-immutable. Trying to be smarter adds quite a bit
> of complexity to this patch as well as long-term maintenance risk
> (ie, needing to keep map_sql_value_to_xml_is_immutable in step with
> the actual behavior of map_sql_value_to_xml; if we mess that up, the
> mistake will be very non-obvious, and these test cases are unlikely
> to catch it). For my money it's not worth it.
>
Dear Tom,
I think you're right. Fixed it in v3.
--
Regards,
Rachitskiy Andrey
| Attachment | Content-Type | Size |
|---|---|---|
| v3-0001-Fold-immutable-XmlExpr-forms-in-eval_const_expressions.patch | text/x-patch | 4.4 KB |
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