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Commit42d5e34

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Repair mishandling of PRIMARY KEY declaration that references an
inherited column, per bug report from Elphick 12/15/00.
1 parenta626b78 commit42d5e34

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1 file changed

+54
-25
lines changed

1 file changed

+54
-25
lines changed

‎src/backend/parser/analyze.c

Lines changed: 54 additions & 25 deletions
Original file line numberDiff line numberDiff line change
@@ -6,7 +6,7 @@
66
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
77
* Portions Copyright (c) 1994, Regents of the University of California
88
*
9-
*$Id: analyze.c,v 1.172 2000/12/07 01:12:08 tgl Exp $
9+
*$Id: analyze.c,v 1.173 2000/12/18 01:37:56 tgl Exp $
1010
*
1111
*-------------------------------------------------------------------------
1212
*/
@@ -945,9 +945,10 @@ transformCreateStmt(ParseState *pstate, CreateStmt *stmt)
945945
index->withClause=NIL;
946946
index->whereClause=NULL;
947947

948-
foreach(keys,constraint->keys)
948+
foreach(keys,constraint->keys)
949949
{
950-
intfound=0;
950+
boolfound= false;
951+
951952
key= (Ident*)lfirst(keys);
952953
Assert(IsA(key,Ident));
953954
column=NULL;
@@ -956,26 +957,58 @@ transformCreateStmt(ParseState *pstate, CreateStmt *stmt)
956957
column=lfirst(columns);
957958
Assert(IsA(column,ColumnDef));
958959
if (strcmp(column->colname,key->name)==0)
960+
{
961+
found= true;
959962
break;
963+
}
964+
}
965+
if (found)
966+
{
967+
/* found column in the new table; force it to be NOT NULL */
968+
if (constraint->contype==CONSTR_PRIMARY)
969+
column->is_not_null= TRUE;
960970
}
961-
if (columns==NIL) {/* try inherited tables */
971+
else
972+
{
973+
/* try inherited tables */
974+
List*inhRelnames=stmt->inhRelnames;
962975
List*inher;
963-
List*inhRelnames=stmt->inhRelnames;
964-
Relationrel;
965-
foreach (inher,inhRelnames){
966-
intcount=0;
967-
Value*inh=lfirst(inher);
968-
if (inh->type!=T_String) {
969-
elog(ERROR,"inherited table name list returns a non-string");
970-
}
971-
rel=heap_openr(inh->val.str,AccessShareLock);
976+
977+
foreach (inher,inhRelnames)
978+
{
979+
Value*inh=lfirst(inher);
980+
Relationrel;
981+
intcount;
982+
983+
Assert(IsA(inh,String));
984+
rel=heap_openr(inh->val.str,AccessShareLock);
972985
if (rel->rd_rel->relkind!=RELKIND_RELATION)
973986
elog(ERROR,"inherited table \"%s\" is not a relation",
974-
inh->val.str);
975-
for (;count<rel->rd_att->natts;count++) {
976-
char*name=NameStr(rel->rd_att->attrs[count]->attname);
977-
if (strcmp(key->name,name)==0) {
978-
found=1;
987+
inh->val.str);
988+
for (count=0;count<rel->rd_att->natts;count++)
989+
{
990+
Form_pg_attributeinhattr=rel->rd_att->attrs[count];
991+
char*inhname=NameStr(inhattr->attname);
992+
993+
if (strcmp(key->name,inhname)==0)
994+
{
995+
found= true;
996+
/*
997+
* If the column is inherited, we currently have
998+
* no easy way to force it to be NOT NULL.
999+
* Only way I can see to fix this would be to
1000+
* convert the inherited-column info to ColumnDef
1001+
* nodes before we reach this point, and then
1002+
* create the table from those nodes rather than
1003+
* referencing the parent tables later. That
1004+
* would likely be cleaner, but too much work
1005+
* to contemplate right now. Instead, raise an
1006+
* error if the inherited column won't be NOT NULL.
1007+
* (Would a NOTICE be more reasonable?)
1008+
*/
1009+
if (!inhattr->attnotnull)
1010+
elog(ERROR,"inherited attribute \"%s\" cannot be a PRIMARY KEY because it is not marked NOT NULL",
1011+
inhname);
9791012
break;
9801013
}
9811014
}
@@ -984,24 +1017,20 @@ transformCreateStmt(ParseState *pstate, CreateStmt *stmt)
9841017
break;
9851018
}
9861019
}
987-
else {
988-
found=1;
989-
}
9901020

9911021
if (!found)
992-
elog(ERROR,"CREATE TABLE: column'%s' named in key does not exist",
1022+
elog(ERROR,"CREATE TABLE: column\"%s\" named in key does not exist",
9931023
key->name);
9941024

995-
if (constraint->contype==CONSTR_PRIMARY)
996-
column->is_not_null= TRUE;
9971025
iparam=makeNode(IndexElem);
9981026
iparam->name=pstrdup(key->name);
9991027
iparam->args=NIL;
10001028
iparam->class=NULL;
10011029
index->indexParams=lappend(index->indexParams,iparam);
10021030

10031031
if (index->idxname==NULL)
1004-
index->idxname=CreateIndexName(stmt->relname,iparam->name,"key",ilist);
1032+
index->idxname=CreateIndexName(stmt->relname,iparam->name,
1033+
"key",ilist);
10051034
}
10061035

10071036
if (index->idxname==NULL)/* should not happen */

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