Axel Rau wrote:
some erp software requires a change of my pgsql cluster from
locale C encoding UTF-8
to
locale de_DE.UTF-8 encoding UTF-8
Most of my databases have only ASCII text data (8 bit UTF8 code range)
in the text columns.
Does the above change influence index performance on such columns?
Yes.
Does postmaster keep track on any multibyte characters being inserted in
such columns, so that the planner can adapt?
No.
What other performance impacts can be expected?
The performance impact is mainly with string comparisons and sorts. I
suggest you run your own tests to find out what is acceptable in your
scenario.
