项目上传

basics/src/main/resources/mapper/ClearanceLogMapper.xml

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+<?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">
+<mapper namespace="com.lightyears.basics.mapper.ClearanceLogMapper">
+    <select id="getPlayerClearanceLogs" resultType="com.lightyears.common.domain.dto.ClearanceRankDto">
+        SELECT
+            p.user_id as playerId,
+            ifnull( max( l.layers_num ), 0 ) AS layersNum
+        FROM
+            sl_player p
+        left join sl_clearance_log l on l.player_id = p.user_id
+        <where>
+            <if test="userId != null and userId > 0">
+                and p.user_id = ${userId}
+            </if>
+        </where>
+        group by p.user_id
+        ORDER BY layersNum desc
+    </select>
+</mapper>