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Very Complex SQL - My Brain Hurts
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À
05/07/2006 10:35:33
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 7 SP1
OS:
Windows XP SP2
Database:
Visual FoxPro
Divers
Thread ID:
01133780
Message ID:
01133858
Vues:
18
Where "Multiplier" in your report comes from? I don't see it mentioned as a part of ETMDATA table.

>>What about "Multiplier"? Does OPERATOR_CLASS table also has date field?
>
>OK, we're after the averag no. of journeys in the ETMDATA (Automated Ticket M/c DATA)say the pensioner bought a return ticket, (a particular class), that class's multiplier might be 2.0, meanimng that ticket is worth 2 trips. An all-day-rover (class) might be used, on average, 2.5 trips.
>
>This only applies to last year's data. Now as they're all zero-rated, all classes have a multiplier of 1.0.
>
>Very astute of you to divine that the Op. Class table has a date. Actually it has a start and end date, specifying when the conc. scheme began and ends. But that isn't important here as that's dealt with in the pre-processing of the raw ETM data that gets compiled into out ETMDATA table that sums up ticket sales for each ticket class within each route.
>
>Confused? I know I am! ;-S
>
--sb--
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