db.operationsCollection.distinct("username").length;
Beware! I made typos, always. This is a multilingual blog, contains Turkish and English posts. Here my homepage without typos : hasantayyar.net - Blog moved to medium.com/@htayyar. Old posts will remain here.
db.operationsCollection.distinct("username").length;
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Most efficient way to generate a list of Unigrams from a text field in MongoDB - Stack Overflow http://bit.ly/vNcEvU