From cd787eef118d175379b6d4cff20ccf21f190441b Mon Sep 17 00:00:00 2001
From: liugang <liugang@chandao.com>
Date: Wed, 27 Aug 2025 16:13:48 +0800
Subject: [PATCH] * [refac] Refactor: simplify tableExists method by removing
 switch statement.

---
 lib/dbh/dbh.class.php | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/lib/dbh/dbh.class.php b/lib/dbh/dbh.class.php
index db48f0fac6..e539fe902d 100644
--- a/lib/dbh/dbh.class.php
+++ b/lib/dbh/dbh.class.php
@@ -391,20 +391,14 @@ class dbh
     public function tableExits($tableName)
     {
         $tableName = str_replace(array("'", '`'), "", $tableName);
-        $sql = "SHOW TABLES FROM {$this->dbConfig->name} like '{$tableName}'";
-        switch($this->dbConfig->driver)
+
+        if($this->dbConfig->driver == 'dm')
         {
-            case 'oceanbase':
-            case 'mysql':
-                $sql = "SHOW TABLES FROM {$this->dbConfig->name} like '{$tableName}'";
-                break;
-            case 'dm':
-                $sql = "SELECT * FROM all_tables WHERE owner='{$this->dbConfig->name}' AND table_name='{$tableName}'";
-                break;
-            default:
-                $sql = '';
+            $sql = "SELECT * FROM all_tables WHERE owner='{$this->dbConfig->name}' AND table_name='{$tableName}'";
+            return $this->rawQuery($sql)->fetch();
         }
 
+        $sql = "SHOW TABLES FROM {$this->dbConfig->name} like '{$tableName}'";
         return $this->rawQuery($sql)->fetch();
     }