| From: | "Daniel Westermann (DWE)" <daniel(dot)westermann(at)dbi-services(dot)com> |
|---|---|
| To: | Bruce Momjian <bruce(at)momjian(dot)us>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Wrong example in the bloom documentation |
| Date: | 2020-10-09 05:44:57 |
| Message-ID: | GVAP278MB01026C00EA4E25E35062483FD2080@GVAP278MB0102.CHEP278.PROD.OUTLOOK.COM |
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| Lists: | pgsql-docs pgsql-hackers |
Hi Bruce, Tom,
On Thu, Oct 8, 2020 at 03:43:32PM -0400, Tom Lane wrote:
>> "Daniel Westermann (DWE)" <daniel(dot)westermann(at)dbi-services(dot)com> writes:
>> >> I was hoping someone more experienced with this would comment, but
>> >> seeing none, I will apply it in a day or two to all supported versions?
>> >> Have you tested this output back to 9.5?
>>
>> > I hoped that as well. No, I tested down to 9.6 because the change happened in 10.
>>
>> The patch assumes that parallel query is enabled, which is not true by
>> default before v10, so it should certainly not be applied before v10
>> (at least not without significant revisions).
Yes, the behavior change was in 10. Before 10 the example is fine, I would not apply that to any prior version, otherwise the whole example needs to be rewritten.
Regards
Daniel
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