doc: Correct the description about the length of pg_stat_activity.query.

MasaoFujii · MasaoFujii · commit f03a34ad2cf3 · 2020-07-09T13:37:56.000+09:00
pg_stat_activity.query text is truncated at 1024 bytes. But previously the document described that it's truncated at 1024 characters. This was not accurate when considering multibyte characters. Back-patch to v10 where this inaccurate description was added. Author: Atsushi Torikoshi Reviewed-by: Daniel Gustafsson, Fujii Masao Discussion: https://postgr.es/m/cd5b49a5a14e887542f5f569c1c6bde2@oss.nttdata.com
diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml
@@ -795,7 +795,7 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <structfield>state</> is <literal>active</> this field shows the
       currently executing query. In all other states, it shows the last query
       that was executed. By default the query text is truncated at 1024
-      characters; this value can be changed via the parameter
+      bytes; this value can be changed via the parameter
       <xref linkend="guc-track-activity-query-size">.
      </entry>
     </row>
