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Doc: explain that "timestamp - timestamp" applies justify_hours().

2020年6月26日 17:54:01 +0000 (13:54 -0400)

Back-patch to v13; before that, there's not really space for this
kind of detail.

Discussion: https://postgr.es/m/c1696f68-fa8d-7759-6a9c-eb293ab1bbc9@gmx.net

doc/src/sgml/func.sgml patch | blob | blame | history

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml

index b7c450ea29d287e515128bc0da56343fd60e8a8f..7119f0b2ca580de1bf4758ce6d661b6d8c6ce2f7 100644 (file)

--- a/doc/src/sgml/func.sgml

+++ b/doc/src/sgml/func.sgml

@@ -8412,11 +8412,12 @@ SELECT regexp_match('abc01234xyz', '(?:(.*?)(\d+)(.*)){1,1}');

<returnvalue>interval</returnvalue>

</para>

<para>

- Subtract timestamps

+ Subtract timestamps (converting 24-hour intervals into days,

+ similarly to <function>justify_hours()</function>)

</para>

<para>

- <literal>timestamp '2001年09月29日 03:00' - timestamp '2001-09-27 12:00'</literal>

- <returnvalue>1 day 15:00:00</returnvalue>

+ <literal>timestamp '2001年09月29日 03:00' - timestamp '2001-07-27 12:00'</literal>

+ <returnvalue>63 days 15:00:00</returnvalue>

</para></entry>

</row>

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