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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

Bernd Helmle's repository

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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