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    Type:Task 
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    Resolution: Fixed
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    Priority:Major - P3 
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    Affects Version/s: None
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    Component/s: None
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    None
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        Fully Compatible
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        Query 2020-01-13, Query 2020-01-27
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        45
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        None
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        None
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        None
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        None
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        None
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        None
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        None
- depends on
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                    SERVER-84956 PoC for basic unsharded union aggregation stage -         
- Closed
 
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- is depended on by
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                    SERVER-45452 [no sharding] Support and test reading from a view using $unionWith -         
- Closed
 
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                    SERVER-45526 Support union with sharded collections -         
- Closed
 
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                    SERVER-45529 Implement and test invalid usage of $unionWith aggregation stage -         
- Closed
 
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                    SERVER-45530 Implement $match and $project pushdown optimization into $unionWith sub-pipeline -         
- Closed
 
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                    SERVER-45531 Implement $project pushdown optimization into $unionWith sub-pipeline -         
- Closed
 
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                    SERVER-45539 Support collation for $unionWith -         
- Closed
 
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                    SERVER-45573 Implement and test auth for $unionWith stage -         
- Closed
 
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                    SERVER-45801 Allow $unionWith inside a $lookup if the inner collection is unsharded -         
- Closed
 
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