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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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18
src/backend/utils/adt/ruleutils.c
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@ -1836,6 +1836,24 @@ pg_get_partition_constraintdef(PG_FUNCTION_ARGS)
PG_RETURN_TEXT_P(string_to_text(consrc));
}
/*
* pg_get_partconstrdef_string
*
* Returns the partition constraint as a C-string for the input relation, with
* the given alias. No pretty-printing.
*/
char *
pg_get_partconstrdef_string(Oid partitionId, char *aliasname)
{
Expr *constr_expr;
List *context;
constr_expr = get_partition_qual_relid(partitionId);
context = deparse_context_for(aliasname, partitionId);
return deparse_expression((Node *) constr_expr, context, true, false);
}
/*
* pg_get_constraintdef
*