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pg_stat_activity: document client_port being null

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As suggested by Stephen Frost.
Discussion: https://postgr.es/m/20191104160605.GC6962@tamriel.snowman.net
This commit is contained in:
Alvaro Herrera 2019-11-12 18:34:20 -03:00
parent 5c46e7d82e
commit c5e8ea978d
1 changed files with 2 additions and 1 deletions
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doc/src/sgml/monitoring.sgml
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@ -652,7 +652,8 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
<entry><structfield>client_port</structfield></entry>
<entry><type>integer</type></entry>
<entry>TCP port number that the client is using for communication
with this backend, or <literal>-1</literal> if a Unix socket is used
with this backend, or <literal>-1</literal> if a Unix socket is used.
If this field is null, it indicates that this is an internal server process.
</entry>
</row>
<row>