Question : summing by date range

Dear experts,

Need a formulae which concatenate values in cell A6 and D1 in one set and A6 and D2 as another set.
and then using these two date intervals concatenated by variable in cell A
sum values in sheet xyz column B by vlookup range values in column D
The dates can be in random order in sheet xyz column

Thank you

Attachments:

sum-by-intervals.xls (48 KB) (File Type Details) 

sum by intervals

Answer : summing by date range

Should be a simple modification:

=SUMPRODUCT(--(xyz!$C$3:$C$303>=A6),--(xyz!$A$3:$A$303>=D1),--(xyz!$A$3:$A$303<=D2),xyz!$B$3:$B$303)