Update index-sparse.txt

[balyanrobin]

Index is explained to be on score field, so uniqueness for score field will be check by MongoDB. example should show the conflict for the values of score field, rather userid

[kay-kim]

Thank you so much for taking the time to update the docs.
However, am going to close this w/o merge as the conflicting examples show a conflict with the existing documents that have the scores 82 and 90 respectively

{ "_id" : ObjectId("523b6e61fb408eea0eec2648"), "userid" : "abby", "score" : 82 }
{ "_id" : ObjectId("523b6e6ffb408eea0eec2649"), "userid" : "nina", "score" : 90 }

and the conflicting inserts:

db.scores.insert( { "userid": "PWWfO8lFs1", "score": 82 } )
db.scores.insert( { "userid": "XlSOX66gEy", "score": 90 } )

But thanks for all your work and effort. Very much appreciated.

Regards,

Kay Kim