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Problem with query - sum()

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  #1  
Old March 30th, 2008, 02:44 PM
sanv sanv is offline
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Problem with query - sum()
Hey,

I have a problem with a query. I would like to sum the columns grouped by the passportID. the sum is retrieved by a calculation:

However, it does not work properly.
Any suggestions?

SELECT c.passportid,(extract(epoch FROM (b.departuredate-b.arrivaldate))::int / (60*60*24)) as "duration", sum(extract(epoch FROM(b.departuredate-b.arrivaldate))::int / (60*60*24)) FROM customer c, booking b, customer_jct_booking cjb WHERE c.passportid = cjb.customers_passportid AND cjb.bookings_bookingid = b.bookingid group by (c.passportid, b.arrivaldate, b.departuredate) ORDER BY (b.departuredate-b.arrivaldate) DESC;
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Old March 31st, 2008, 01:13 AM
rski rski is offline
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Quote:
Originally Posted by sanv
Hey,

I have a problem with a query. I would like to sum the columns grouped by the passportID. the sum is retrieved by a calculation:

However, it does not work properly.
Any suggestions?

SELECT c.passportid,(extract(epoch FROM (b.departuredate-b.arrivaldate))::int / (60*60*24)) as "duration", sum(extract(epoch FROM(b.departuredate-b.arrivaldate))::int / (60*60*24)) FROM customer c, booking b, customer_jct_booking cjb WHERE c.passportid = cjb.customers_passportid AND cjb.bookings_bookingid = b.bookingid group by (c.passportid, b.arrivaldate, b.departuredate) ORDER BY (b.departuredate-b.arrivaldate) DESC;

Is this query run?, i think there should be group by clause
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  #3  
Old March 31st, 2008, 03:56 AM
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pabloj pabloj is offline
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It does not work properly means nothing, describe the exact problem or error and show your case with a meaningful example.
Also formatting your queries makes them more readable ...
sql Code:
Original - sql Code 
  1. SELECT 
  2.  c.passportid,
  3.  (extract(epoch FROM (b.departuredate-b.arrivaldate))::int / (60*60*24)) AS "duration", 
  4.  SUM(extract(epoch FROM(b.departuredate-b.arrivaldate))::int / (60*60*24)) 
  5. FROM 
  6.  customer c, 
  7.  booking b, 
  8.  customer_jct_booking cjb 
  9. WHERE 
  10.   c.passportid = cjb.customers_passportid 
  11.  AND 
  12.   cjb.bookings_bookingid = b.bookingid 
  13. GROUP BY 
  14. -- (c.passportid, b.arrivaldate, b.departuredate) 
  15.  c.passportid,
  16.  (extract(epoch FROM (b.departuredate-b.arrivaldate))::int / (60*60*24)) AS "duration"
  17. ORDER BY 
  18.  (b.departuredate-b.arrivaldate) DESC;
You should be grouping by passportid and duration
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