Le 1/09/2014 17:39, Tom Lane a écrit :
Arnaud Lesauvage <arnaud.listes@xxxxxxxxx> writes:
I just came accross this trying to upgrade my server from 8.4.8 to 9.3.4 :
SELECT substring('²' FROM E'\\d');
8.4 : NULL
9.3 : "²"
Am I correct to expect NULL in this case ?
Not necessarily. \d will match any character that iswdigit() returns true
for. It looks like your new server is using a locale that considers "²"
to be a digit.
Since both PostgreSQL servers run on the same computer, can I assume
that this is a collation problem ?
I tried to create a test table with different collations, but locale
names are a headache on windows, so I gave up for today. I will give it
another try tomorrow.
--
Arnaud
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