Mysql 在sql中，将时间转换为时间戳

我有10.45,13.00的时间 现在我需要查一下时间和日期在哪里

我的问题是

SELECT T.*,
  (SELECT a.driver_id
   FROM tbl_assigned_drivers a
   WHERE a.vehicle_id=t.id
     AND a.from_time<=T.time
     AND a.to_time >=T.time
     AND a.status='1') AS driver
FROM
  (SELECT id, user_id, stime AS TIME, splace, slat, slng, eplace, elat, elng, status, '1' AS TYPE
   FROM `tb_shifts`
   UNION ALL SELECT id, user_id, etime AS TIME, eplace AS splace, elat AS slat, elng AS slng, splace AS eplace, slat AS elat, slng AS elng, status, '0' AS TYPE
   FROM `tb_shifts`) T,
     tb_shft_veh s,
     tb_trucks_data t
WHERE T.time>=11.54
  AND s.register_number=t.register_number
  AND s.register_number='AP01TEST'
  AND s.shft_id=T.id
  AND s.status='1'
ORDER BY T.time ASC

现在我需要将T.time转换为a.from_time格式

请帮帮我…

谢谢大家， 已解决的查询是

select T.*,(SELECT a.driver_id FROM tbl_assigned_drivers a WHERE a.vehicle_id=t.id and a.from_time<=CONCAT(CURDATE()," ",REPLACE(T.time, '.', ':'),":00") and a.to_time >=CONCAT(CURDATE()," ",REPLACE(T.time, '.', ':'),":00") and a.status='1') as driver from (SELECT id,user_id,stime as time,splace,slat,slng,eplace,elat,elng,status,'1' as type FROM `tb_shifts` UNION ALL SELECT id,user_id,etime as time,eplace as splace,elat as slat,elng as slng,splace as eplace,slat as elat,slng as elng,status,'0' as type FROM `tb_shifts`) T,tb_shft_veh s,tb_trucks_data t where T.time>=11.54 and s.register_number=t.register_number and s.register_number='AP01TEST' and s.shft_id=T.id and s.status='1' order by T.time asc

感谢大家,， 已解决的查询是

select T.*,(SELECT a.driver_id FROM tbl_assigned_drivers a WHERE a.vehicle_id=t.id and a.from_time<=CONCAT(CURDATE()," ",REPLACE(T.time, '.', ':'),":00") and a.to_time >=CONCAT(CURDATE()," ",REPLACE(T.time, '.', ':'),":00") and a.status='1') as driver from (SELECT id,user_id,stime as time,splace,slat,slng,eplace,elat,elng,status,'1' as type FROM `tb_shifts` UNION ALL SELECT id,user_id,etime as time,eplace as splace,elat as slat,elng as slng,splace as eplace,slat as elat,slng as elng,status,'0' as type FROM `tb_shifts`) T,tb_shft_veh s,tb_trucks_data t where T.time>=11.54 and s.register_number=t.register_number and s.register_number='AP01TEST' and s.shft_id=T.id and s.status='1' order by T.time asc

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和是两个完全独立的RDBMS产品（具有完全不同的日期时间功能）。选择一个，它完全是mysql，是两个完全独立的RDBMS产品（具有完全不同的datetime功能）。挑一个，完全正确

CONCAT(CURDATE()," ",REPLACE("10.00", '.', ':'),":00")