fix: do not trigger on views in ContainsPostgresTable (#1001)

resolves #1000

Author: ggnmstr

src/pgduckdb_hooks.cpp

@@ -20,6 +20,7 @@ extern "C" {
 #include "tcop/pquery.h"
 #include "utils/rel.h"
 #include "utils/relcache.h"
+#include "utils/lsyscache.h"
 #include "optimizer/optimizer.h"
 #include "optimizer/planner.h"
 }
@@ -154,6 +155,11 @@ ContainsPostgresTable(Node *node, void *context) {
 			if (rte->relid == InvalidOid) {
 				continue;
 			}
+			char relkind = get_rel_relkind(rte->relid);
+			if (relkind == RELKIND_VIEW) {
+				/* Any tables referenced in the view will also be in the rtable */
+				continue;
+			}
 			if (!::IsDuckdbTable(rte->relid)) {
 				return true;
 			}