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Use libc version as a collation version on glibc systems.

Thomas Munro <tmunro@postgresql.org>

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Commit: d5ac14f9ccdda036358c9059d4a29836ebc0c440
Author: Thomas Munro <tmunro@postgresql.org>
Date: 2019-10-16T04:28:24Z
Releases: 13.0 
Use libc version as a collation version on glibc systems.

Using glibc's version string to detect potential collation definition
changes is not 100% reliable, but it's better than nothing.  Currently
this affects only collations explicitly provided by "libc".  More work
will be needed to handle the default collation.

Author: Thomas Munro, based on a suggestion from Christoph Berg
Reviewed-by: Peter Eisentraut
Discussion: https://postgr.es/m/4b76c6d4-ae5e-0dc6-7d0d-b5c796a07e34%402ndquadrant.com

Files

PathChange+/−
doc/src/sgml/ref/alter_collation.sgml modified +10 −0
src/backend/utils/adt/pg_locale.c modified +12 −2
src/bin/pg_dump/t/002_pg_dump.pl modified +2 −2

Documentation touched

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