人才培养方案新增自动生成代号，代码

backend/roomroot-jwgl/src/main/java/com/roomroot/jwgl/mapper/ZYBMapper.java

@@ -29,4 +29,9 @@ public interface ZYBMapper extends BaseMapper<ZYB> {
      * @return 分页对象
      */
     Page<ZYB> selectPageList(Page<ZYB> page, @Param("zyb") ZYB zyb);
+
+    /**
+     * 当前最大序号标识，用于新增时排到列表最前且顺序连续。
+     */
+    Integer selectMaxXhbs();
 }

backend/roomroot-jwgl/src/main/java/com/roomroot/jwgl/mapper/ZYBMapper.xml

@@ -50,8 +50,8 @@
             <include refid="Base_Column_List" />
         FROM "专业表"
         WHERE 1=1
-        <if test="zyb.ty != null and zyb.ty != ''">
-            AND 停用 = #{zyb.ty},
+        <if test="zyb.ty != null">
+            AND 停用 = #{zyb.ty}
         </if>
         <if test="zyb.zymc != null and zyb.zymc != ''">
             AND 专业名称 LIKE CONCAT('%', #{zyb.zymc}, '%')
@@ -68,7 +68,11 @@
         <if test="zyb.zyfx != null and zyb.zyfx != ''">
             AND 专业方向 LIKE CONCAT('%', #{zyb.zyfx}, '%')
         </if>
-        ORDER BY 序号标识
+        ORDER BY 序号标识 DESC NULLS LAST, 启用时间 DESC NULLS LAST
+    </select>
+
+    <select id="selectMaxXhbs" resultType="java.lang.Integer">
+        SELECT MAX("序号标识") FROM "专业表"
     </select>
 
 </mapper>