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docs: Link to the correct protocol version inspection function

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The docs for max_protocol_version suggested PQprotocolVersion()
instead of PQfullProtocolVersion() to find out the exact protocol
version.  Since PQprotocolVersion() only returns the major protocol
version, that is bad advice.

Author: Jelte Fennema-Nio <postgres@jeltef.nl>
Reviewed-by: Shinya Kato <shinya11.kato@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/CAGECzQSKFxQsYAgr11PhdOr-RtPZEdAXZnHx6U3avLuk3xQaTQ%40mail.gmail.com
This commit is contained in:
Peter Eisentraut
2025-10-30 10:59:56 +01:00
parent bf3dba508e
commit fa78e5bea5
1 changed files with 1 additions and 1 deletions
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doc/src/sgml/libpq.sgml
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@@ -2220,7 +2220,7 @@ postgresql://%2Fvar%2Flib%2Fpostgresql/dbname
server does not support the protocol version requested by the client,
the connection is automatically downgraded to a lower minor protocol
version that the server supports. After the connection attempt has
completed you can use <xref linkend="libpq-PQprotocolVersion"/> to
completed you can use <xref linkend="libpq-PQfullProtocolVersion"/> to
find out which exact protocol version was negotiated.
</para>