從A表中選取數據列表到B表中然後統計選取的數據字段總行值的sql語句

SQL語句挑選數據值： 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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