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New feature Attribute left outer join effect in MicroStrategy Web

New workaround Attribute left outer join effect in MicroStrategy Web
Left outer join for attribute is  unavailable in Developer by changing the VLDB settings in for the attribute and grid. 
But, this can also be done with this work around, here are three tables in warehouse. Create three attributes named A, B, C, and after them added in a report in Developer, no data returns， as showed below.
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Here is the workaround to achieve the attribute left outer join on MicroStrategy Web.
 Follow the steps below.
  1. Create three reports named A (with attribute A), A&B (with attribute A and B),A&C (with attribute A and C)
  2. Create a dashboard based on the three reports created in last step.
  3. In the right corner of the dashboard, change the data source to none.  
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