diff --git a/Database/ActiveRecord.php b/Database/ActiveRecord.php
index 5fbcda76..54441b2a 100644
--- a/Database/ActiveRecord.php
+++ b/Database/ActiveRecord.php
@@ -167,13 +167,13 @@ class ActiveRecord extends BaseActiveRecord
 
 
 	/**
-	 * @param array $attributes
+	 * @param array $fields
 	 * @return ActiveRecord|bool
 	 * @throws Exception
 	 */
-	public function update(array $attributes): static|bool
+	public function update(array $fields): static|bool
 	{
-		return $this->save($attributes);
+		return $this->save($fields);
 	}
 
 	/**
diff --git a/Database/Base/BaseActiveRecord.php b/Database/Base/BaseActiveRecord.php
index fa168a05..41d583c0 100644
--- a/Database/Base/BaseActiveRecord.php
+++ b/Database/Base/BaseActiveRecord.php
@@ -190,10 +190,9 @@ abstract class BaseActiveRecord extends Component implements IOrm, ArrayAccess
 	/**
 	 * @throws Exception
 	 */
-	public function hasAutoIncrement(): bool
+	public function isAutoIncrement(): bool
 	{
-		$autoIncrement = $this->getAutoIncrement();
-		return $autoIncrement !== null;
+		return $this->getAutoIncrement() !== null;
 	}
 
 	/**
@@ -434,7 +433,7 @@ abstract class BaseActiveRecord extends Component implements IOrm, ArrayAccess
 	 */
 	private function setPrimary($lastId, $param): static
 	{
-		if ($this->hasAutoIncrement()) {
+		if ($this->isAutoIncrement()) {
 			$this->setAttribute($this->getAutoIncrement(), (int)$lastId);
 			return $this;
 		}
diff --git a/Database/Command.php b/Database/Command.php
index ac45feb9..1f6a4e32 100644
--- a/Database/Command.php
+++ b/Database/Command.php
@@ -225,19 +225,17 @@ class Command extends Component
 	{
 		$connect = $this->db->getConnect($this->sql);
 		if (!($connect instanceof PDO)) {
-			return null;
+			return $this->addError('数据库繁忙, 请稍后再试.');
 		}
-		if (!($query = $connect->query($this->sql))) return null;
-		if ($type === static::ROW_COUNT) {
-			$result = $query->rowCount();
-		} else if ($type === static::FETCH_COLUMN) {
-			$result = $query->fetchColumn();
-		} else if ($type === static::FETCH_ALL) {
-			$result = $query->fetchAll(PDO::FETCH_ASSOC);
-		} else {
-			$result = $query->fetch(PDO::FETCH_ASSOC);
+		if (!($query = $connect->query($this->sql))) {
+			return $this->addError($connect->errorInfo()[2] ?? '数据库异常, 请稍后再试.');
 		}
-		return $result;
+		return match ($type) {
+			self::ROW_COUNT => $query->rowCount(),
+			self::FETCH_COLUMN => $query->fetchColumn(),
+			self::FETCH_ALL => $query->fetchAll(PDO::FETCH_ASSOC),
+			default => $query->fetch(PDO::FETCH_ASSOC)
+		};
 	}
 
 	/**
@@ -258,7 +256,7 @@ class Command extends Component
 			return true;
 		}
 		$result = $connection->lastInsertId();
-		if ($result == 0 && $hasAutoIncrement->hasAutoIncrement()) {
+		if ($result == 0 && $hasAutoIncrement->isAutoIncrement()) {
 			return $this->addError($connection->errorInfo()[2], 'mysql');
 		}
 		return $result == 0 ? true : $result;