从A表中选取数据列表到B表中然后统计选取的数据字段总行值的sql语句

SQL语句挑选数据值： SELECT COUNT(table_new.c) AS `totalCount` FROM (SELECT    `deviceId` AS `hotspot.deviceId`,   COUNT(`count`) AS `c`  FROM   `t_hotspot_log`  WHERE `sceneId` = 2    AND `deleted` = 0    AND

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