| nested-group function/single-group function [message #20246] |
Wed, 08 May 2002 13:06  |
Aysha Abrego
Messages: 1
Registered: May 2002
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Junior Member |
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I'm trying to do a query like this:
SELECT s.Flt_Date, s.Flt_Nbr, s.Serial_Nbr,
COUNT(r.Cust_Nbr),
SUM(a.Capacity - COUNT(r.Cust_Nbr))
FROM Scheduled s,
Reserves r,
Planes p,
Aircraft_Type a
WHERE s.Sched_Flt = r.Sched_Flt AND
s.Serial_Nbr = p.Serial_Nbr AND
p.Type = a.Type
GROUP BY s.Flt_Date, s.Flt_Nbr, s.Serial_Nbr;
And I get 2 types of error messages: one says not a single-group function (referring to s.Flt_Date following SELECT) & says I should put it in a GROUP BY clause, which I thought I did at the end. The other message says Nested Group function without GROUP BY (referring to the second COUNT) and says I should add a GROUP BY, which I did at the end but does it mean to add another one somewhere else? Any help?
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| Re: nested-group function/single-group function [message #20256 is a reply to message #20246] |
Thu, 09 May 2002 03:57  |
Suresh Vemulapalli
Messages: 624
Registered: August 2000
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Senior Member |
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SELECT s.Flt_Date, s.Flt_Nbr, s.Serial_Nbr,
COUNT(r.Cust_Nbr),
SUM(a.Capacity) - COUNT(r.Cust_Nbr)
FROM Scheduled s,
Reserves r,
Planes p,
Aircraft_Type a
WHERE s.Sched_Flt = r.Sched_Flt AND
s.Serial_Nbr = p.Serial_Nbr AND
p.Type = a.Type
GROUP BY s.Flt_Date, s.Flt_Nbr, s.Serial_Nbr;
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