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 LiveInternet.ru:
: 16.03.2006
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DLookup

, 30 2013 . 07:48 +
!

" " [Uchet1] ( " ") [].
( [Ruk_grupp]) :
[Ruk_grupp].Value = DLookup("[Ruk_grupp]", "[]", [Uchet1] = [Uchet1])


[Uchet2] ( " " ), (Null)
:
[Uchet2].Value = DLookup([Uchet2], "[]", [Uchet1] = [Uchet1])
:
[Uchet2].Value = Nz(DLookup([Uchet2], "[]", [Uchet1] = [Uchet1]), 0)

RunTime error 94. Invalid use of null.

- , [Uchet2] 0 () [].[Uchet2]

, - ( , , , - ).

, ?

http://www.sql.ru/forum/1068607/dlookup-dlya-obnovleniya-chislovogo-polya


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