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Home > Forums > Programmers > DBMS Packages > Computer Associates: Openingres Forum

SQL to update table based on latest dates in another table

thread176-1433845
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lambic (TechnicalUser)
10 Dec 07 10:50
Hi,
I have an to write an update query, based on dates, which I can't quite figure out. The details are:

Table A:
AccountID
DateFrom
DateTo
Value

Table B:
AccountID
DateFrom
DateTo
Value

What I need to do is update Table A Value with the Value and DateFrom from Table B where the AccountID's match and the DateTo in Table B is not later than that in Table A (i.e. there can be multiple records in B, so I want the latest for each account that's not later than that AccountID's entry in table A).
I think that makes sense!

Any help would be appreciated.

Cheers
lambic (TechnicalUser)
10 Dec 07 10:51
Sorry - should have said, this is an Igres 2.6 database.
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