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re: help please

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Old May 12th, 2004, 11:43 PM
khin_kin khin_kin is offline
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Unhappy re: help please
Dear all,

I have 3 column: date, time, stocks name, price

I have 2 questions:

1. what is the command (or query languange) to get the
the first and/or last observations for any given day (i know it can be done in
aggregate query, in Ms acces but can it be done in SQL server query as well?)?
e.g. I want to get the first and last price of the day for any particular stocks

2. how to calculate return with the following formula:
return=log P(t)-log P(t-1), where P(t) is price at
time t say 10 am and P(t-1) is price at one period
previous t say 9 am?


Regards


Charly
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Old May 15th, 2004, 08:31 PM
Doug G Doug G is offline
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You can find the answers in the transact-sql section of the documentation in the SQL Server Books Online

http://msdn.microsoft.com/library/e...lserver2000.asp
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