| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Volkan YAZICI <volkan(dot)yazici(at)gmail(dot)com> |
| Cc: | Peter Eisentraut <peter_e(at)gmx(dot)net>, pgsql-patches(at)postgresql(dot)org |
| Subject: | Re: mvcc.sgml make up |
| Date: | 2005-12-05 21:10:09 |
| Message-ID: | 2562.1133817009@sss.pgh.pa.us |
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| Lists: | pgsql-patches |
Volkan YAZICI <volkan(dot)yazici(at)gmail(dot)com> writes:
> On 12/5/05, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> SELECT * FROM foo WHERE col > 4;
>> SELECT * FROM foo WHERE col > 5;
> Ofcourse two different SELECT queries are (probably) gonna return
> different results. If this is the point you want to underline in the
> documentation, just rip that sentence off.
The point is that a row with (say) col = 10 might appear or disappear
or change between the two queries. Whether the queries are formally
identical doesn't affect that.
regards, tom lane
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