Обсуждение: pgsql: Doc: clarify behavior of "anyrange" pseudo-type.

Doc: clarify behavior of "anyrange" pseudo-type.

I noticed that we completely failed to document the restriction
that an "anyrange" result type has to be inferred from an "anyrange"
input.  The docs also were less clear than they could be about the
relationship between "anyrange" and "anyarray".

It's been like this all along, so back-patch.

Branch
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REL_11_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/974c8ea0afe35a55c1b9ffb9f2090058b9f356dd

Modified Files
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doc/src/sgml/extend.sgml | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)