如何查找外部查询的总记录

Question

这是我的查询

SELECT concat(sf.from_location, "-",sf.to_location) as from_to_city,
    count( *) as seach_count,
    (SELECT count(DISTINCT fb.origin) as no_of_book 
        FROM flight_booking_details as fb 
        WHERE fb.status="BOOKING_CONFIRMED" and
             from_code=journey_from and
             to_code=journey_to AND
             DATE(fb.created_datetime) >="2018-07-01" AND
             DATE(fb.created_datetime) <="2018-07-04" AND
             fb.journey_from = 'BLR' AND
             fb.journey_to = 'DEL' ) as booking_count 
FROM search_flight_history sf 
WHERE DATE(sf.created_datetime) >= '2018-07-01' AND
     DATE(sf.created_datetime) <= '2018-07-04' AND
     (sf.from_location = 'BLR' OR
         sf.from_code = 'BLR') AND
     (sf.to_location = 'DEL' OR
         sf.to_code = 'DEL') 
GROUP BY from_code,
    to_code 

在这里，我需要找到该查询的总记录。

请任何人帮我找到这个

Answer 1

如果真的只需要查询返回的行数，则可以尝试以下操作：

select count(*)
from
(
SELECT concat(sf.from_location, "-",sf.to_location) as from_to_city,
    count( *) as seach_count,
    (SELECT count(DISTINCT fb.origin) as no_of_book 
        FROM flight_booking_details as fb 
        WHERE fb.status="BOOKING_CONFIRMED" and
             from_code=journey_from and
             to_code=journey_to AND
             DATE(fb.created_datetime) >="2018-07-01" AND
             DATE(fb.created_datetime) <="2018-07-04" AND
             fb.journey_from = 'BLR' AND
             fb.journey_to = 'DEL' ) as booking_count 
FROM search_flight_history sf 
WHERE DATE(sf.created_datetime) >= '2018-07-01' AND
     DATE(sf.created_datetime) <= '2018-07-04' AND
     (sf.from_location = 'BLR' OR
         sf.from_code = 'BLR') AND
     (sf.to_location = 'DEL' OR
         sf.to_code = 'DEL') 
GROUP BY from_code,
    to_code 
) X;