Access column value from one straight table in another straight table
I have two straight table
for example:
Straight Table 1:
Column1, Column2, Column3, Column4
a1 a2 a3 a4
b1 b2 b3 b4
Straight Table 2:
Column21, Column22, Column23, Column24
aa1 a1 12 22/2/2012 12:05
ab1 a1 233 22/2/2012 17:05
ac1 b1 333 22/2/2012 01:05
ad1 d1 43 22/2/2012 12:55
my question is how can i show the maximum value of Column24(Straight Table 2) in Straight Table 1 on basis of the Column1(Straight Table 1) and Column21(Straight Table 2).
