Hi,
I have a problem I dont really know how to solve except for writing a function.
I have a table with prices;
SecCode| Price | PriceDate -------+------------+----------- A0001 | 13.10 | 2004-10-30 A0001 | 13.03 | 2004-10-29 A0001 | 13.12 | 2004-10-28 A0001 | 12.45 | 2004-10-27 A0001 | 12.65 | 2004-10-26 A0001 | 12.45 | 2004-10-25
A0002 | 10.10 | 2004-10-30 A0002 | 10.45 | 2004-10-27 A0002 | 10.65 | 2004-10-26 A0002 | 10.45 | 2004-10-25 etc.
What I would like to calculate is:
a) the difference of the past 2 days for every security of available prices
b) a flag indicating, that the price of today-1 is yesterday's price (true in case A0001, false for A0002)
c) the variance of the past 30 days
Is it possible to do that within one query?
Thanks for any advise Alex
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