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

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
index 8a617fa17332d0f8cdef187a36700921fb0f574a..405c09c9497206387f32b782a74ea257eb449313 100644 (file)
--- a/doc/src/sgml/monitoring.sgml
+++ b/doc/src/sgml/monitoring.sgml
@@ -894,7 +894,7 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
        state is 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
        .