Please avoid last post as It was bymistake sent while typing
MAX(ExtractDate) will calculate for entire data in Dataset But I need to calculate for every month.
For Example :
Plant Component material Month ExtractDate Forecast
P1 C1 M1 201601 5-Jan-16 10
P1 C1 M2 201601 8-Jan-16 15
P2 C1 M3 201601 10-Jan-16 20
P1 C1 M4 201602 20-Feb-16 10
P1 C1 M3 201602 22-Feb-16 20
If User select Plant = P1 and Component = C1 and Material = ALL then Result should be
Plant Component material Month ExtractDate Forecast MaxDate
P1 C1 M1 201601 5-Jan-16 10 8-Jan-16
P1 C1 M2 201601 8-Jan-16 15 8-Jan-16
P1 C1 M4 201602 20-Feb-16 10 22-Feb-16
P1 C1 M3 201602 22-Feb-16 20 22-Feb-16