eb7ed3f3063401496e4aa4bd68fa33f0be31a72f Allow UNIQUE indexes on partitioned tables 8224de4f42ccf98e08db07b43d52fed72f962ebb Indexes with INCLUDE columns and their support in B-tree
postgres=# CREATE TABLE t(i int,j int) PARTITION BY LIST (i); postgres=# CREATE TABLE t1 PARTITION OF t FOR VALUES IN (1); postgres=# CREATE TABLE t2 PARTITION OF t FOR VALUES IN (2); -- Correctly errors postgres=# CREATE UNIQUE INDEX ON t(j); ERROR: insufficient columns in UNIQUE constraint definition DETAIL: UNIQUE constraint on table "t" lacks column "i" which is part of the partition key. -- Fails to error postgres=# CREATE UNIQUE INDEX ON t(j) INCLUDE(i); -- Fail to enforce uniqueness across partitions due to failure to enforce inclusion of partition key in index KEY postgres=# INSERT INTO t VALUES(1,1); postgres=# INSERT INTO t VALUES(2,1); postgres=# SELECT * FROM t; i | j ---+--- 1 | 1 2 | 1 (2 rows) I found this thread appears to have been close to discovering the issue ~9 months ago. https://www.postgresql.org/message-id/flat/CAJGNTeO%3DBguEyG8wxMpU_Vgvg3nGGzy71zUQ0RpzEn_mb0bSWA%40mail.gmail.com Justin
