Quite often within QlikView applications, it is necessary to use the same selection criteria over a number of fields. For example, you may want to have a date selection, which selects Date Ordered
on one chart and Date Received
on another chart.
Previously, we mentioned circular references. One way in which these are created is when there is a Date
selection in multiple date fields. The multiple dates exist so that we can produce charts, for example, using Date Ordered
on one chart and Date Received
on another.
We could avoid the circular reference by having two selection boxes, but we could then have the issue that only selected records fit with both selections.
The alterative to this is to use the Data Island approach.