Provide a test for variable existence in psql "\if :{?variable_name}" will be translated to "\if TRUE" if the variable exists and "\if FALSE" otherwise. Thus it will be possible to execute code conditionally on the existence of the variable, regardless of its value.
Fabien Coelho, with some review by Robins Tharakan and some light text editing by me. Discussion: https://postgr.es/m/alpine.DEB.2.20.1708260835520.3627@lancre Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/d57c7a7c506276597af619bdb8c62fa5b592745a Modified Files -------------- doc/src/sgml/ref/psql-ref.sgml | 10 +++++++++ src/bin/psql/psqlscanslash.l | 18 ++++++++++++++++ src/fe_utils/psqlscan.l | 42 ++++++++++++++++++++++++++++++++++++- src/include/fe_utils/psqlscan_int.h | 2 ++ src/test/regress/expected/psql.out | 26 +++++++++++++++++++++++ src/test/regress/sql/psql.sql | 18 ++++++++++++++++ 6 files changed, 115 insertions(+), 1 deletion(-) -- Sent via pgsql-committers mailing list (pgsql-committers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers