diff --git a/db/mysql_connection.py b/db/mysql_connection.py
index 444a261..887cceb 100644
--- a/db/mysql_connection.py
+++ b/db/mysql_connection.py
@@ -83,10 +83,14 @@ class MySQLConnection(BaseDatabaseConnection):
         cursor = None
         try:
             cursor = self.connection.cursor(dictionary=True)
+            # Convert SQL Server placeholders (?) to MySQL placeholders (%s)
+            # Convert SQL Server table names to MySQL format
+            converted_sql = self._convert_placeholders(sql)
+            converted_sql = self._convert_table_names(converted_sql)
             if params:
-                cursor.execute(sql, params)
+                cursor.execute(converted_sql, params)
             else:
-                cursor.execute(sql)
+                cursor.execute(converted_sql)
 
             # 直接获取字典列表
             results = cursor.fetchall()
@@ -116,10 +120,14 @@ class MySQLConnection(BaseDatabaseConnection):
         cursor = None
         try:
             cursor = self.connection.cursor()
+            # Convert SQL Server placeholders (?) to MySQL placeholders (%s)
+            # Convert SQL Server table names to MySQL format
+            converted_sql = self._convert_placeholders(sql)
+            converted_sql = self._convert_table_names(converted_sql)
             if params:
-                cursor.execute(sql, params)
+                cursor.execute(converted_sql, params)
             else:
-                cursor.execute(sql)
+                cursor.execute(converted_sql)
 
             self.connection.commit()
             return cursor.rowcount
@@ -132,6 +140,44 @@ class MySQLConnection(BaseDatabaseConnection):
             if cursor:
                 cursor.close()
 
+    def _convert_placeholders(self, sql: str) -> str:
+        """
+        Convert SQL Server placeholders (?) to MySQL placeholders (%s)
+
+        This is necessary because the codebase was originally designed for SQL Server,
+        which uses '?' as parameter placeholders. MySQL uses '%s' instead.
+
+        Args:
+            sql: SQL query with potential SQL Server placeholders
+
+        Returns:
+            str: SQL query with MySQL-compatible placeholders
+        """
+        return sql.replace('?', '%s')
+
+    def _convert_table_names(self, sql: str) -> str:
+        """
+        Convert SQL Server table names to MySQL format
+
+        Converts [dbo].[TableName] to dbo_TableName and removes square brackets
+        from column names.
+
+        Args:
+            sql: SQL query with SQL Server table/column names
+
+        Returns:
+            str: SQL query with MySQL-compatible table/column names
+        """
+        import re
+
+        # Convert [dbo].[TableName] to dbo_TableName
+        sql = re.sub(r'\[dbo\]\.\[([^\]]+)\]', r'dbo_\1', sql)
+
+        # Remove square brackets from column names (e.g., [Column] -> Column)
+        sql = re.sub(r'\[([^\]]+)\]', r'\1', sql)
+
+        return sql
+
     def get_placeholder(self) -> str:
         """
         获取参数占位符