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Support foreign keys that reference partitioned tables

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Previously, while primary keys could be made on partitioned tables, it
was not possible to define foreign keys that reference those primary
keys.  Now it is possible to do that.

Author: Álvaro Herrera
Reviewed-by: Amit Langote, Jesper Pedersen
Discussion: https://postgr.es/m/20181102234158.735b3fevta63msbj@alvherre.pgsql
This commit is contained in:
Alvaro Herrera
2019-04-03 14:38:20 -03:00
parent 9155580fd5
commit f56f8f8da6
15 changed files with 2059 additions and 451 deletions
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7
doc/src/sgml/ref/create_table.sgml
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@ -379,9 +379,6 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
<para>
Partitioned tables do not support <literal>EXCLUDE</literal> constraints;
however, you can define these constraints on individual partitions.
Also, while it's possible to define <literal>PRIMARY KEY</literal>
constraints on partitioned tables, creating foreign keys that
reference a partitioned table is not yet supported.
</para>
<para>
@ -1028,9 +1025,7 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
addition of a foreign key constraint requires a
<literal>SHARE ROW EXCLUSIVE</literal> lock on the referenced table.
Note that foreign key constraints cannot be defined between temporary
tables and permanent tables. Also note that while it is possible to
define a foreign key on a partitioned table, it is not possible to
declare a foreign key that references a partitioned table.
tables and permanent tables.
</para>
<para>