Fix problems with incomplete attempt to prohibit OIDS with MVs.

Problem with assertion failure in restoring from pg_dump output
reported by Joachim Wieland.

Review and suggestions by Tom Lane and Robert Haas.

Author: kgrittn

doc/src/sgml/ref/create_materialized_view.sgml

@@ -44,6 +44,9 @@ CREATE [ UNLOGGED ] MATERIALIZED VIEW <replaceable>table_name</replaceable>
    <command>CREATE MATERIALIZED VIEW</command> is similar to
    <command>CREATE TABLE AS</>, except that it also remembers the query used
    to initialize the view, so that it can be refreshed later upon demand.
+   A materialized view has many of the same properties as a table, but there
+   is no support for temporary materialized views or automatic generation of
+   OIDs.
   </para>
  </refsect1>
 
@@ -88,7 +91,9 @@ CREATE [ UNLOGGED ] MATERIALIZED VIEW <replaceable>table_name</replaceable>
       This clause specifies optional storage parameters for the new
       materialized view; see <xref linkend="sql-createtable-storage-parameters"
       endterm="sql-createtable-storage-parameters-title"> for more
-      information.
+      information.  All parameters supported for <literal>CREATE
+      TABLE</literal> are also supported for <literal>CREATE MATERIALIZED
+      VIEW</literal> with the exception of <literal>OIDS</literal>.
       See <xref linkend="sql-createtable"> for more information.
      </para>
     </listitem>

src/backend/commands/createas.c

@@ -218,11 +218,15 @@ GetIntoRelEFlags(IntoClause *intoClause)
 	 * because it doesn't have enough information to do so itself (since we
 	 * can't build the target relation until after ExecutorStart).
 	 */
-	if (interpretOidsOption(intoClause->options))
+	if (interpretOidsOption(intoClause->options, intoClause->relkind))
 		flags = EXEC_FLAG_WITH_OIDS;
 	else
 		flags = EXEC_FLAG_WITHOUT_OIDS;
 
+	Assert(intoClause->relkind != RELKIND_MATVIEW ||
+		   (flags & (EXEC_FLAG_WITH_OIDS | EXEC_FLAG_WITHOUT_OIDS)) ==
+		   EXEC_FLAG_WITHOUT_OIDS);
+
 	if (intoClause->skipData)
 		flags |= EXEC_FLAG_WITH_NO_DATA;
 

src/backend/commands/tablecmds.c

@@ -559,7 +559,7 @@ DefineRelation(CreateStmt *stmt, char relkind, Oid ownerId)
 	 */
 	descriptor = BuildDescForRelation(schema);
 
-	localHasOids = interpretOidsOption(stmt->options);
+	localHasOids = interpretOidsOption(stmt->options, relkind);
 	descriptor->tdhasoid = (localHasOids || parentOidCount > 0);
 
 	/*

src/backend/parser/parse_clause.c

@@ -243,9 +243,14 @@ interpretInhOption(InhOption inhOpt)
  * table/result set should be created with OIDs. This needs to be done after
  * parsing the query string because the return value can depend upon the
  * default_with_oids GUC var.
+ *
+ * Materialized views are handled here rather than reloptions.c because that
+ * code explicitly punts checking for oids to here.  We prohibit any explicit
+ * specification of the oids option for a materialized view, and indicate that
+ * oids are not needed if we don't get an error.
  */
 bool
-interpretOidsOption(List *defList)
+interpretOidsOption(List *defList, char relkind)
 {
 	ListCell   *cell;
 
@@ -256,9 +261,19 @@ interpretOidsOption(List *defList)
 
 		if (def->defnamespace == NULL &&
 			pg_strcasecmp(def->defname, "oids") == 0)
+		{
+			if (relkind == RELKIND_MATVIEW)
+				ereport(ERROR,
+						(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+						 errmsg("unrecognized parameter \"%s\"", "oids")));
+
 			return defGetBoolean(def);
+		}
 	}
 
+	if (relkind == RELKIND_MATVIEW)
+		return false;
+
 	/* OIDS option was not specified, so use default. */
 	return default_with_oids;
 }

src/backend/parser/parse_utilcmd.c

@@ -199,11 +199,14 @@ transformCreateStmt(CreateStmt *stmt, const char *queryString)
 	{
 		cxt.stmtType = "CREATE FOREIGN TABLE";
 		cxt.isforeign = true;
+		cxt.hasoids = interpretOidsOption(stmt->options,
+										  RELKIND_FOREIGN_TABLE);
 	}
 	else
 	{
 		cxt.stmtType = "CREATE TABLE";
 		cxt.isforeign = false;
+		cxt.hasoids = interpretOidsOption(stmt->options, RELKIND_RELATION);
 	}
 	cxt.relation = stmt->relation;
 	cxt.rel = NULL;
@@ -217,7 +220,6 @@ transformCreateStmt(CreateStmt *stmt, const char *queryString)
 	cxt.blist = NIL;
 	cxt.alist = NIL;
 	cxt.pkey = NULL;
-	cxt.hasoids = interpretOidsOption(stmt->options);
 
 	Assert(!stmt->ofTypename || !stmt->inhRelations);	/* grammar enforces */
 

src/include/parser/parse_clause.h

@@ -20,7 +20,7 @@ extern void transformFromClause(ParseState *pstate, List *frmList);
 extern int setTargetTable(ParseState *pstate, RangeVar *relation,
 			   bool inh, bool alsoSource, AclMode requiredPerms);
 extern bool interpretInhOption(InhOption inhOpt);
-extern bool interpretOidsOption(List *defList);
+extern bool interpretOidsOption(List *defList, char relkind);
 
 extern Node *transformWhereClause(ParseState *pstate, Node *clause,
 					 ParseExprKind exprKind, const char *constructName);