refactor(oa): 优化报告摘要查询 SQL

- 重构了查询最新详情时间的子查询，提高了查询效率
- 调整了 SQL 结构，增强了可读性
- 移除了冗余的空行和缩进，统一了代码格式

gear-oa/src/main/resources/mapper/oa/OaReportSummaryMapper.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <!DOCTYPE mapper
-        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
-        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+    PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+    "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 <mapper namespace="com.gear.oa.mapper.OaReportSummaryMapper">
 
     <resultMap type="com.gear.oa.domain.OaReportSummary" id="OaReportSummaryResult">
@@ -30,11 +30,17 @@
         FROM oa_report_summary s
         LEFT JOIN (
         SELECT
+        d1.summary_id,
+        d1.create_time AS latest_create_time
+        FROM oa_report_detail d1
+        INNER JOIN (
+        SELECT
         summary_id,
-        create_time AS latest_create_time,
-        ROW_NUMBER() OVER (PARTITION BY summary_id ORDER BY create_time DESC) AS rn
+        MAX(create_time) AS max_time
         FROM oa_report_detail
-        ) d ON s.summary_id = d.summary_id AND d.rn = 1
+        GROUP BY summary_id
+        ) d2 ON d1.summary_id = d2.summary_id AND d1.create_time = d2.max_time
+        ) d ON s.summary_id = d.summary_id
         <where>
             <if test="bo.reportTitle != null and bo.reportTitle != ''">
                 AND s.report_title LIKE CONCAT('%', #{bo.reportTitle}, '%')
@@ -48,12 +54,11 @@
             <if test="bo.type != null">
                 AND s.type = #{bo.type}
             </if>
-                AND s.del_flag = 0
+            AND s.del_flag = 0
         </where>
         ORDER BY
         COALESCE(d.latest_create_time, s.report_date) DESC,
         s.report_date DESC
     </select>
 
-
 </mapper>