diff --git a/src/Database/ResultSet.php b/src/Database/ResultSet.php
index 71c3517..dfe9aed 100644
--- a/src/Database/ResultSet.php
+++ b/src/Database/ResultSet.php
@@ -31,18 +31,34 @@ class ResultSet implements RSInterface
 
     public function getAsArray(): array
     {
-        return $this->getStatement()->fetchAll(PDO::FETCH_ASSOC);
+        $rs = $this->getStatement()->fetchAll(PDO::FETCH_ASSOC);
+        if (!$rs) {
+            throw new \PDOException("No results found.");
+        }
+        return $rs;
     }
     public function getAsObject(): array
     {
-        return $this->getStatement()->fetchAll(PDO::FETCH_OBJ);
+        $rs = $this->getStatement()->fetchAll(PDO::FETCH_OBJ);
+        if (!$rs) {
+            throw new \PDOException("No results found.");
+        }
+        return $rs;
     }
     public function getFirstAsArray(): array
     {
-        return $this->getStatement()->fetch(PDO::FETCH_ASSOC);
+        $rs = $this->getStatement()->fetch(PDO::FETCH_ASSOC);
+        if (!$rs or count($rs) === 0) {
+            throw new \PDOException("No results found.");
+        }
+        return $rs;
     }
     public function getFirstAsObject(): object
     {
-        return $this->getStatement()->fetch(PDO::FETCH_OBJ);
+        $rs = $this->getStatement()->fetch(PDO::FETCH_OBJ);
+        if (!$rs or count($rs) === 0) {
+            throw new \PDOException("No results found.");
+        }
+        return $rs;
     }
 }