1.排队取号 数量查询不准确修复

src/main/resources/mapper/TbCallQueueMapper.xml

@@ -35,31 +35,46 @@
     <select id="selectInfoByOpenId"
             resultType="com.chaozhanggui.system.cashierservice.entity.vo.CallQueueInfoVO">
         SELECT
-        d.shop_name, d.logo, d.status as shop_state,
+        d.shop_name,
+        d.logo,
+        d.status AS shop_state,
         a.call_num,
         a.id,  -- 用户的排队记录ID
         a.state,
         a.user_id,  -- 用户ID
         b.name AS table_name,  -- 桌子名称
         b.note AS table_note,  -- 桌子备注
-        COUNT(c.id) AS waiting_count,  -- 前面有几个人
+        (
-        COUNT(c.id) * b.wait_time AS wait_time  -- 预计等待时间
+        SELECT COUNT(1)
+        FROM tb_call_queue c
+        WHERE
+        c.call_table_id = a.call_table_id
+        and c.shop_id=a.shop_id		-- 同一张桌子
+        AND c.create_time &lt; a.create_time  -- 在当前用户之前排队
+        AND c.state IN (0, 1)  -- 排队中或等待中的人
+        ) AS waiting_count,  -- 前面有几个人
+        (
+        SELECT COUNT(1) * b.wait_time
+        FROM tb_call_queue c
+        WHERE
+        c.call_table_id = a.call_table_id
+        AND c.shop_id=a.shop_id			-- 同一张桌子
+        AND c.create_time &lt; a.create_time  -- 在当前用户之前排队
+        AND c.state IN (0, 1)  -- 排队中或等待中的人
+        ) AS wait_time  -- 预计等待时间
         FROM
         tb_call_queue a
-        left join tb_shop_info d on a.shop_id=d.id
+        LEFT JOIN
+        tb_shop_info d ON a.shop_id = d.id
         LEFT JOIN
         tb_call_table b ON a.call_table_id = b.id
-        LEFT JOIN
-        tb_call_queue c ON c.call_table_id = a.call_table_id
-
-        AND c.create_time &lt; a.create_time
-        AND c.state IN (0, 1)  -- 前面的人
         WHERE
-        a.open_id=#{openId} and a.shop_id=#{shopId} and a.create_day=#{today}  -- 替换为目标用户的user_id
+        a.open_id = #{openId}  -- 替换为目标用户的 open_id
+        AND a.shop_id = #{shopId}
+        AND a.create_day = #{today}  -- 替换为目标日期
         GROUP BY
         a.id, a.user_id, b.name, b.note, b.wait_time
         ORDER BY
         a.create_time ASC;
-
     </select>
 </mapper>