On Mon, 2020-09-28 at 10:02 +0200, Paul Förster wrote: > I have a general question about the use of ICU. Currently, we have PostgreSQL compiled > from source (Linux) without ICU support. All database clusters and databases are UTF8 > and of course relying on glibc. > > With the sooner or later upcoming glibc release 2.28, there will probably a big reindex > operation be necessary. To avoid that, I'd like to use ICU. > > Compiling --with-icu into the new software, is there a way to make a whole database cluster > and all its databases use an ICU without having to manually change all tables or indexes? There have been efforts to add this functionality: https://www.postgresql.org/message-id/flat/5e756dd6-0e91-d778-96fd-b1bcb06c161a%402ndquadrant.com but it didn't get done. Your best bet is to manually change the definition of all columns to use the new collation. psql's \gexec may help. Yours, Laurenz Albe -- Cybertec | https://www.cybertec-postgresql.com
