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Add an optional missing_ok argument to SQL function current_setting().

author Tom Lane <tgl@sss.pgh.pa.us>

Thu, 2 Jul 2015 20:40:55 +0000 (16:40 -0400)

committer Tom Lane <tgl@sss.pgh.pa.us>

Thu, 2 Jul 2015 20:41:07 +0000 (16:41 -0400)

commit 10fb48d66de76e7dc1e36ef18af502ed9600352f

tree dbe8d354065a8342d8e4f34aa976a62ef785d815 tree

parent 726117243022178e72966cbffdfb9147ec6dbbcc commit | diff

Add an optional missing_ok argument to SQL function current_setting().

This allows convenient checking for existence of a GUC from SQL, which is
particularly useful when dealing with custom variables.

David Christensen, reviewed by Jeevan Chalke

contrib/tsearch2/tsearch2.c diff | blob | blame | history

doc/src/sgml/func.sgml diff | blob | blame | history

src/backend/utils/misc/guc.c diff | blob | blame | history

src/include/catalog/catversion.h diff | blob | blame | history

src/include/catalog/pg_proc.h diff | blob | blame | history

src/include/utils/builtins.h diff | blob | blame | history

src/include/utils/guc.h diff | blob | blame | history

src/test/regress/expected/guc.out diff | blob | blame | history

src/test/regress/sql/guc.sql diff | blob | blame | history

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