Doc: add an example of a self-referential foreign key to ddl.sgml. While we've always allowed such cases, the documentation didn't say you could do it.
Discussion: https://postgr.es/m/[email protected] Branch ------ REL_12_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/bd9e46a1a4acafa170e9dbf35299518a216ffa41 Modified Files -------------- doc/src/sgml/ddl.sgml | 28 ++++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-)
