SERVER-4508 In new aggregation framework, when execute $unwind for an empty array ([]), got assertion exception ("exception: assertion db/pipeline/document_source_unwind.cpp:165")

• 
• Closed

SERVER-4674 aggregation: treat undefined values the same as null values

• 
• Closed

SERVER-4738 aggregation: field inclusion in $group _id is not accepting integral types

• 
• Closed

SERVER-4844 can't killop an aggregation operation

• 
• Closed

SERVER-4843 non user friendly assertion with skip:0

• 
• Closed

SERVER-3253 aggregation: unsharded support $out

• 
• Closed

SERVER-3862 aggregation: add $first and $last group functions

• 
• Closed

SERVER-4435 aggregation: need a function to reconsitute ISODates from constituent parts

• 
• Closed

SERVER-10097 aggregation: support $out on a sharded cluster

• 
• Closed

SERVER-3257 aggregation: create real error numbers

• 
• Closed

SERVER-3258 aggregation: assertion failure on empty document

• 
• Closed

SERVER-3292 aggregation: add a limit option for $sort

• 
• Closed

SERVER-3548 use field path prefix consistently on rhs expressions

• 
• Closed

SERVER-3832 aggregation: early $sort should be optimized to use an index if possible

• 
• Closed

SERVER-3855 aggregation: finalize command name

• 
• Closed

SERVER-3856 aggregation: $unwind should be a separate pipeline operator

• 
• Closed

SERVER-3857 aggregation: finalize name of $unwind

• 
• Closed

SERVER-3858 aggregation: finalize name of $project

• 
• Closed

SERVER-3860 aggregation: uassert on sorts where the data size exceeds 10% of physical RAM

• 
• Closed

SERVER-3861 aggregation: make $skip and $limit top-level pipeline operators

• 
• Closed

SERVER-3865 aggregation: finalize field reference symbol (i.e., $, or something else?)

• 
• Closed

SERVER-3881 aggregation: $group _id should support being a constant to support count(*)

• 
• Closed

SERVER-3884 aggregation: add automated tests for sharded setups

• 
• Closed

SERVER-3252 aggregation: allow _id to be a non-structured type

• 
• Closed

SERVER-3859 aggregation: if future updates use the aggregation expression syntax, are injection attacks a danger?

• 
• Closed