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From Stephan Szabo:

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I believe this should fix the issue that Philip Warner
noticed about the check for unique constraints meeting the
referenced keys of a foreign key constraint allowing the
specification of a subset of a foreign key instead of
rejecting it.  I also added tests for a base case of
this to the foreign key and alter table tests and patches
for expected output.
This commit is contained in:
Tom Lane
2000-12-05 19:57:56 +00:00
parent 5ce8ab96f5
commit 981a7d32d1
6 changed files with 98 additions and 39 deletions
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37
src/backend/commands/command.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/command.c,v 1.112 2000/11/16 22:30:19 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/command.c,v 1.113 2000/12/05 19:57:55 tgl Exp $
*
* NOTES
* The PerformAddAttribute() code, like most of the relation
@ -1287,26 +1287,33 @@ AlterTableAddConstraint(char *relationName,
{
List *attrl;
/* go through the fkconstraint->pk_attrs list */
foreach(attrl, fkconstraint->pk_attrs)
{
Ident *attr=lfirst(attrl);
found = false;
for (i = 0; i < INDEX_MAX_KEYS && indexStruct->indkey[i] != 0; i++)
/* Make sure this index has the same number of keys -- It obviously
* won't match otherwise. */
for (i = 0; i < INDEX_MAX_KEYS && indexStruct->indkey[i] != 0; i++);
if (i!=length(fkconstraint->pk_attrs))
found=false;
else {
/* go through the fkconstraint->pk_attrs list */
foreach(attrl, fkconstraint->pk_attrs)
{
int pkattno = indexStruct->indkey[i];
if (pkattno>0)
Ident *attr=lfirst(attrl);
found = false;
for (i = 0; i < INDEX_MAX_KEYS && indexStruct->indkey[i] != 0; i++)
{
char *name = NameStr(rel_attrs[pkattno-1]->attname);
if (strcmp(name, attr->name)==0)
int pkattno = indexStruct->indkey[i];
if (pkattno>0)
{
found = true;
break;
char *name = NameStr(rel_attrs[pkattno-1]->attname);
if (strcmp(name, attr->name)==0)
{
found = true;
break;
}
}
}
if (!found)
break;
}
if (!found)
break;
}
}
ReleaseSysCache(indexTuple);