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authorTom Lane2020-06-26 17:54:01 +0000
committerTom Lane2020-06-26 17:54:01 +0000
commit098868b57687ef9c5e3cd9dff469594c6a1c6d10 (patch)
tree2315282566e65172cda783c8208f6d7b98a17f4b
parent08671057e025b48136d4eed5477f287ffce217b0 (diff)
Doc: explain that "timestamp - timestamp" applies justify_hours().
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
-rw-r--r--doc/src/sgml/func.sgml7
1 files changed, 4 insertions, 3 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index aa235f139e3..de1e8fed3ac 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -8395,11 +8395,12 @@ 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 '2001-09-29 03:00' - timestamp '2001-09-27 12:00'</literal>
- <returnvalue>1 day 15:00:00</returnvalue>
+ <literal>timestamp '2001-09-29 03:00' - timestamp '2001-07-27 12:00'</literal>
+ <returnvalue>63 days 15:00:00</returnvalue>
</para></entry>
</row>