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
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/10fb48d66de76e7dc1e36ef18af502ed9600352f
Modified Files
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contrib/tsearch2/tsearch2.c | 2 +-
doc/src/sgml/func.sgml | 7 ++++-
src/backend/utils/misc/guc.c | 53 +++++++++++++++++++++++++++++--------
src/include/catalog/catversion.h | 2 +-
src/include/catalog/pg_proc.h | 6 +++--
src/include/utils/builtins.h | 1 +
src/include/utils/guc.h | 3 ++-
src/test/regress/expected/guc.out | 31 ++++++++++++++++++++++
src/test/regress/sql/guc.sql | 13 +++++++++
9 files changed, 101 insertions(+), 17 deletions(-)