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Mention DST boundaries as a possible cause of regress test failure.

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Tom Lane 2000-04-02 22:28:54 +00:00
parent 4aefba9077
commit 6b77778c7d
1 changed files with 9 additions and 0 deletions
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doc/src/sgml/regress.sgml
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@ -313,6 +313,15 @@ The runtime path is /usr/local/pgsql (other paths are possible).
environment variable PGTZ to PST8PDT to ensure proper results.
</Para>
<Para>
Some of the queries in the "timestamp" test will fail if you run
the test on the day of a daylight-savings time changeover, or the
day before or after one. These queries assume that the intervals
between midnight yesterday, midnight today and midnight tomorrow are
exactly twenty-four hours ... which is wrong if daylight-savings time
went into or out of effect meanwhile.
</Para>
<Para>
There appear to be some systems which do not accept the recommended syntax
for explicitly setting the local time zone rules; you may need to use