Re: psql display of foreign keys

On 2019-Mar-25, Alvaro Herrera wrote:

> v9 attached; this one's final AFAICT.

Actually, I propose this fixup. It doesn't change the current output,
but of course it affects how this works with my patch in
https://postgr.es/m/20190321215420.GA22766@alvherre.pgsql
The v9 patch does not show anything for the partitions of the referenced
partitioned table; with this one it shows like this

-- verify psql behaves sanely
\d droppk
Partitioned table "regress_fk.droppk"
Column | Type | Collation | Nullable | Default
--------+---------+-----------+----------+---------
a | integer | | not null |
Partition key: RANGE (a)
Indexes:
"droppk_pkey" PRIMARY KEY, btree (a)
Referenced by:
TABLE "dropfk" CONSTRAINT "dropfk_a_fkey" FOREIGN KEY (a) REFERENCES droppk(a)
Number of partitions: 3 (Use \d+ to list them.)

\d droppk21
Table "regress_fk.droppk21"
Column | Type | Collation | Nullable | Default
--------+---------+-----------+----------+---------
a | integer | | not null |
Partition of: droppk2 FOR VALUES FROM (1000) TO (1400)
Indexes:
"droppk21_pkey" PRIMARY KEY, btree (a)
Referenced by:
TABLE "dropfk" CONSTRAINT "dropfk_a_fkey" FOREIGN KEY (a) REFERENCES droppk(a)

--
Álvaro Herrera https://www.2ndQuadrant.com/
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