I've been trying all kinds of different ways to accomplish the following,
and my head is spinning.
Problem: How do you return from the DB just the YEAR of the first and last
YEAR that had dates from 1st week of January to last week of December?
Clarification: Suppose you had a database that contained stock price data.
You are only interested in the first and last year that was a complete year.
A "complete year" is a year where you have price data from the very first
weekday (not weekend or holiday) of the year to the very last weekday of
that year. Usually, a complete year is from Jan 2, 3 or 4 to Dec 29, 30, 31.
Result Desired: To simply return the YEAR of the first complete year, and
the YEAR of the last complete year of the dataset. This should return only
two years in a single column. If 1988 is the first complete year and 2008 is
the last complete year, then it should only return:
1988
2008
Available columns are:
DATE (complete date)
YEAR
MONTH
DAY
...
I'm trying to do something like this, but it won't work because it says you
can only have one LIMIT clause.
SQLString = "SELECT min(Year) FROM TmpTable " & _
"WHERE Month=1 LIMIT 1 UNION " & _
"SELECT max(Year) FROM TmpTable " & _
"WHERE Month = 12 LIMIT 1"
Help would be appreciated.
Thanks.
Rick
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