you can also use this solution: for your dataset2 click the tablix tab, and below you will get the Row groups. Click on each of the row groups. Therefore, if you have 1 child and 1 parent, you will have to do this on both. 1) Right-click group_child-> group properties-> filters and put the following expression "=IsNothing(Fields!Group_Child.Value)="True"" " ; set it as a logical expression and 'value'='False' , and you will need to do the same for Group_parent1 through n. This will display NO rows if you donβt have data for the lower dataset. If this is the same thing you want to do with Tablix 1, go to it.
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