Mongodb: Prints all the sparse indexes in a db

mongodb_all_sparse_indexes.js

// Prints all the sparse indexes in the db
db.getCollectionNames().forEach(function(collection) {
  indexes = db[collection].getIndexes();
  print("Indexes for " + collection + ":");
  indexes.forEach(function(index) {
    if (index['sparse']) {
      printjson(index);
    }
  });
});