On Jan 23, 2008, at 10:26 AM, Tom Lane wrote:
Reading the release notes is good, but you really really should test
the
application(s) against a test 8.1 installation before you go live ...
be sure to run *every* query your system uses through 8.1. the most
common problems you will run into are issues relating to using strings
as integers which tended to work in most cases in 7.x but not in 8.x.
the release notes cover such changes. pay particular attention to
changes in auto typecasts.
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TIP 5: don't forget to increase your free space map settings
