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Update 24 hours/1 day distinction in release notes.

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This commit is contained in:
Bruce Momjian 2005-10-25 15:12:22 +00:00
parent 9ee8b9fd38
commit b83547201f
1 changed files with 8 additions and 8 deletions
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16
doc/src/sgml/release.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.391 2005/10/15 20:12:32 neilc Exp $
$PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.392 2005/10/25 15:12:22 momjian Exp $
Typical markup:
@ -1211,13 +1211,13 @@ psql -t -f fixseq.sql db1 | psql -e db1
Glaesemann)
</para>
<para>
Days that contain a daylight savings time adjustment are not 24
hours, but typically 23 or 25 hours. This change allows days
(not fixed 24-hour periods) to be added to dates who's result
includes a daylight savings time adjustment period. Therefore,
while in previous releases <literal>1 day</> and <literal>24
hours</> were interchangeable interval values, in this release
they are treated differently, e.g.
Dates that contain a daylight savings time adjustment are not 24
hours, but typically 23 or 25 hours. This change allows numeric days
(not fixed 24-hour periods) to be added to dates which include
a daylight savings time adjustment period. Therefore, while in
previous releases <literal>1 day</> and <literal>24 hours</> were
interchangeable interval values, in this release they are treated
differently, e.g.
<programlisting>
'2005-05-03 00:00:00 EST' + '1 day' = '2005-05-04 00:00:00-04'
'2005-05-03 00:00:00 EST' + '24 hours' = '2005-05-04 01:00:00-04'