- depends on
- 
                    SERVER-45399 Add basic union aggregation stage for unsharded collections -         
- Closed
 
-         
- is depended on by
- 
                    SERVER-45712 Remove flag guard for $unionWith -         
- Closed
 
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        SERVER-45399
        Add basic union aggregation stage for unsharded collections
    
            
        
        SERVER-45712
        Remove flag guard for $unionWith