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(parent: dd8e191) | patch
Allow NULL version for individual collations.
authorThomas Munro <tmunro@postgresql.org>
Wed, 25 Mar 2020 02:53:24 +0000 (15:53 +1300)
committerThomas Munro <tmunro@postgresql.org>
Wed, 25 Mar 2020 02:53:24 +0000 (15:53 +1300)
commit382a821907e76bf6068492a164fdfc57578391f4
tree697544cff679ca2ab357e6d68f22146f1d094342tree
parentdd8e19132acfbb28d579288a412ed6c0a5ea338bcommit | diff
Allow NULL version for individual collations.

Remove the documented restriction that collation providers must either
return NULL for all collations or non-NULL for all collations.

Use NULL for glibc collations like "C.UTF-8", which might otherwise lead
future proposed commits to force unnecessary index rebuilds.

Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
Discussion: https://postgr.es/m/CA%2BhUKGJvqup3s%2BJowVTcacZADO6dOhfdBmvOPHLS3KXUJu41Jw%40mail.gmail.com
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