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    Type:Improvement 
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    Resolution: Unresolved
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    Priority:Major - P3 
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    None
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    Affects Version/s: 0.9.9
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    Component/s: Index Maintenance, Querying
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    None
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        Query Optimization
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        (copied to CRM)
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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
db.foo.ensureIndex(
{ "a.*.b" : 1 } )
db.foo.find( 
 )
db.foo.find( {} , 
)
- is duplicated by
- 
                    SERVER-27774 Add $of for iterating over object keys -         
- Closed
 
-         
- 
                    SERVER-32472 Recursive query of nested document -         
- Closed
 
-         
- 
                    SERVER-1248 Should have an $* array-key-wildcard operator -         
- Closed
 
-         
- 
                    SERVER-2989 $elemMatch for querying nested objects -         
- Closed
 
-         
- is related to
- 
                    SERVER-736 Support for XPath like queries -         
- Backlog
 
-         
- 
                    SERVER-36261 Support field projection based on string inside of field name -         
- Backlog
 
-         
- 
                    SERVER-2675 Multikeys (indexing keys in a hash) for ranged queries -         
- Closed
 
-         
- 
                    SERVER-48897 Allow sub-field matching in Wildcard indexes -         
- Backlog
 
-         
- 
                    SERVER-2989 $elemMatch for querying nested objects -         
- Closed
 
-