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Doc: add example of round(v, s) with negative s.

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This has always worked, but you'd be unlikely to guess it
from the documentation.  Add an example showing it.

Lack of docs noted by David Johnston.  Back-patch to v13;
the documentation layout we used before that was not very
amenable to squeezing in multiple examples.

Discussion: https://postgr.es/m/CAKFQuwZ4Vy1Xty0G5Ok+ot=NDrU3C6hzF1JwUk-FEkwe3V9_RA@mail.gmail.com
This commit is contained in:
Tom Lane 2022-12-01 12:26:12 -05:00
parent afa4a4f764
commit e10799aa25
1 changed files with 4 additions and 0 deletions
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doc/src/sgml/func.sgml
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@ -1598,6 +1598,10 @@ repeat('Pg', 4) <returnvalue>PgPgPgPg</returnvalue>
<para> <para>
<literal>round(42.4382, 2)</literal> <literal>round(42.4382, 2)</literal>
<returnvalue>42.44</returnvalue> <returnvalue>42.44</returnvalue>
</para>
<para>
<literal>round(1234.56, -1)</literal>
<returnvalue>1230</returnvalue>
</para></entry> </para></entry>
</row> </row>