diff --git a/src/Command.php b/src/Command.php
index 5082537..98f700e 100644
--- a/src/Command.php
+++ b/src/Command.php
@@ -169,6 +169,7 @@ class Command extends Component
 		$pdo = $this->db->getConnect($this->sql);
 		$result = $pdo->execute($this->sql, $isInsert, $this->params);
 		if ($hasAutoIncrement && $result == 0) {
+            var_dump($hasAutoIncrement, $result);
 			return false;
 		}
 		return $result;
diff --git a/src/Mysql/PDO.php b/src/Mysql/PDO.php
index 6c42f25..ad92347 100644
--- a/src/Mysql/PDO.php
+++ b/src/Mysql/PDO.php
@@ -250,7 +250,8 @@ class PDO implements StopHeartbeatCheck
     public function execute(string $sql, $isInsert, array $params = []): int
     {
         $this->_last = time();
-        if (!(($prepare = $this->_pdo()->prepare($sql)) instanceof PDOStatement)) {
+        $pdo = $this->_pdo();
+        if (!(($prepare = $pdo->prepare($sql)) instanceof PDOStatement)) {
             throw new Exception($prepare->errorInfo()[2] ?? static::DB_ERROR_MESSAGE);
         }
         if ($prepare->execute($params) === false) {
@@ -258,7 +259,7 @@ class PDO implements StopHeartbeatCheck
         }
         $result = 1;
         if ($isInsert) {
-            $result = (int)$this->_pdo()->lastInsertId();
+            $result = (int)$pdo->lastInsertId();
         }
         $prepare->closeCursor();
         return $result;