, 19 2017 . 11:42
+
Excel 2013.
!
.
, Access :
T1 KOD, Name, Date, G1, G2, GX... ( 200 000 )
T2 KOD, Group, DateIn ( 8 000 )
T1 Group
KOD 2 , DateIn Group.
Date = MAX( DateIn, DateIn <=Date)
, ( Access, )
SQL.
SELECT T1.*,
(SELECT TOP 1 Group FROM T2 WHERE T1.KOD=T2.KOD ORDER BY DateIn DESC) as GroupName
FROM T1
, - .
Excell - , Access ( , - ).
, ?
LEFT JOIN ? . JOIN .
http://www.sql.ru/forum/1271884/zavisaet-sql-zapros-soderzhashhiy-vlozhennyy-zavisimyy-zapros