Fix for table alias relationship bug

psql/schema.go

@@ -319,9 +319,22 @@ func (s *DBSchema) SetRel(child, parent string, rel *DBRel) error {
 
 func (s *DBSchema) GetRel(child, parent string) (*DBRel, error) {
 	rel, ok := s.rm[child][parent]
+	if !ok {
+		// No relationship found so this time fetch the table info
+		// and try again in case child or parent was an alias
+		ct, err := s.GetTable(child)
+		if err != nil {
+			return nil, err
+		}
+		pt, err := s.GetTable(parent)
+		if err != nil {
+			return nil, err
+		}
+		rel, ok = s.rm[ct.Name][pt.Name]
 		if !ok {
 			return nil, fmt.Errorf("unknown relationship '%s' -> '%s'",
 				child, parent)
 		}
+	}
 	return rel, nil
 }