查询聊天记录最后一条

src/main/java/com/dd/admin/business/chat/mapper/xml/ChatMapper.xml

@@ -61,15 +61,34 @@
     <select id="selectChatList" resultType="com.dd.admin.business.chat.domain.ChatVo"
             parameterType="java.lang.String">
                    SELECT
-                *, b.AVATAR_URL AS fromAvatar
+                    c.*
+                    FROM
+                        (
+                            SELECT
+                       DISTINCT a.FROM_ID,
+                                a.CHAT_ID,
+                                a.FROM_NAME,
+                                a.TO_ID,
+                                a.TO_NAME,
+                                a.MESSAGE_TYPE,
+                                a.MESSAGE_STATUS,
+                                a.CONTENT,
+                                a.RESOURCE_URL,
+                                a.DELETED,
+                                a.CREATE_TIME,
+                                a.IP_ADDRESS,
+                                a.IP_REAL_ADDRESS,
+                                b.AVATAR_URL
+                    AS fromAvatar
                             FROM
                                 business_chat a
                             LEFT JOIN business_author b ON a.FROM_ID = b.AUTHOR_ID
                             WHERE
                                 a.TO_ID = #{toId}
-            GROUP BY
-                a.TO_ID = #{toId}
                             ORDER BY
                                 a.create_time DESC
+                        ) c
+                    GROUP BY
+                        c.TO_ID = #{toId}
     </select>
 </mapper>