feat: 修复校验字典code不准确问题

src/main/resources/mapper/system/DictMapper.xml

@@ -47,4 +47,14 @@
         ORDER BY
             t1.create_time DESC
     </select>
+
+    <!-- 获取指定字典编码对应的的数量 -->
+    <select id="getDictCodeCount" resultType="java.lang.Long">
+        SELECT
+            COUNT(*) AS total
+        FROM
+            sys_dict
+        WHERE
+            dict_code = #{dictCode}
+    </select>
 </mapper>