Doc: mention foreign keys can reference unique indexes We seem to have only documented a foreign key can reference the columns of a primary key or unique constraint. Here we adjust the documentation to mention columns in a non-partial unique index can be mentioned too.
The header comment for transformFkeyCheckAttrs() also didn't mention unique indexes, so fix that too. In passing make that header comment reflect reality in the various other aspects where it deviated from it. Bug: 18295 Reported-by: Gilles PARC Author: Laurenz Albe, David Rowley Discussion: https://www.postgresql.org/message-id/18295-0ed0fac5c9f7b17b%40postgresql.org Backpatch-through: 12 Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/c85977d8fef7b18f69e0be72923ddb8dcc8165b5 Modified Files -------------- doc/src/sgml/ddl.sgml | 20 ++++++++++---------- doc/src/sgml/ref/create_table.sgml | 19 +++++++++++++------ src/backend/commands/tablecmds.c | 14 +++++++++----- 3 files changed, 32 insertions(+), 21 deletions(-)