The table inheritance works mostly

When a table has partitions or inheritance children these are listed as subnodes. A subnode can appear multiple times under different parents as postgresql supports inheriting multiple tables.

The sizes are still missing and maybe some things I have note verified yet are not correct.

pglablib/ui/catalog/tables/TableSize.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include <cstdint>
+
+class TableSize {
+public:
+    int oid;
+    int64_t totalBytes = -1;
+    int64_t indexBytes = -1;
+    int64_t toastBytes = -1;
+
+    TableSize();
+};