fix logic about join

orm_exec_page_v2.txt

@@ -16,6 +16,7 @@ CREATE OR REPLACE PROCEDURE orm_exec_page_v2 (
     Item Who        Date       Modify Docs
     ==== ========== ========== ================================================
     1    Michael    2025/07/11 根據 ms-sql 的版本, 利用 ChatGPT/DeepSeek 等AI, 改寫為 Mariadb 版
+	2    Michael    2026/03/09 欄位加入 ma. 若擴充欄位檔 sys_joinfields 有定義
 	
 */
 BEGIN
@@ -89,11 +90,21 @@ BEGIN
     SELECT joinfields, jointables INTO _joinfields, _jointables
     FROM sys_joinfields WHERE menuid = _menuid;
 
-    SET _alias = 'ma.';
-    SET _tbl_alias = ' ma ';
+	IF _joinfields IS NOT NULL AND _joinfields <> '' THEN
+	  SET _alias = 'ma.';
+      SET _tbl_alias = ' ma ';
+	ELSE
+      SET _alias = '';
+      SET _tbl_alias = '';
+    END IF;
+
+    --  統一加 alias 邏輯
     IF LOCATE('ma.', _orderby) = 0 THEN
       SET _orderby = CONCAT(_alias, _orderby);
     END IF;
+	
+	-- 應該在此處把相關欄位都加上 alias 2026/03/09 Michael
+	
   END IF;
 
   -- 建立 WHERE 條件
@@ -115,7 +126,7 @@ BEGIN
         SET _wheresql = CONCAT(
             _wheresql,
             IF(v_pos > 1, ' OR ', ''),
-            v_field,
+            _alias, v_field,
             ' LIKE ',
             QUOTE(CONCAT('%', _where_value, '%'))
         );