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Further tweak the default behavior of psql's \dconfig.

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Define "parameters with non-default settings" as being those that
not only have pg_settings.source different from 'default', but
also have a current value different from the hard-wired boot_val.
Adding the latter restriction removes a number of not-very-interesting
cases where the active setting is chosen by initdb but in practice
tends to be the same all the time.

Per discussion with Jonathan Katz.

Discussion: https://postgr.es/m/YlFQLzlPi4QD0wSi@msg.df7cb.de
This commit is contained in:
Tom Lane 2022-04-13 15:03:58 -04:00
parent 7b7ed046cb
commit 139d46ee26
1 changed files with 2 additions and 1 deletions
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3
src/bin/psql/describe.c
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@ -4408,7 +4408,8 @@ describeConfigurationParameters(const char *pattern, bool verbose,
NULL, "pg_catalog.lower(s.name)", NULL,
NULL);
else
appendPQExpBufferStr(&buf, "WHERE s.source <> 'default'\n");
appendPQExpBufferStr(&buf, "WHERE s.source <> 'default' AND\n"
" s.setting IS DISTINCT FROM s.boot_val\n");
appendPQExpBufferStr(&buf, "ORDER BY 1;");