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Page URL:
https://docs.couchbase.com/dotnet-sdk/current/howtos/n1ql-queries-with-sdk.html#query-results

Emphasise that metrics are lazy loading and only returned after results are retrieved

            var qo = new QueryOptions();

            qo.Metrics(true);

            for (int i = 0; i < 100; i++)

                var queryResult = await cluster.QueryAsync<dynamic>("select \"Hello World\" as greeting", qo);

                var metrics = queryResult.MetaData.Metrics;

                Console.WriteLine(metrics.ElapsedTime);

           var qo = new QueryOptions();

            qo.Metrics(true);

            for (int i = 0; i < 100; i++)

                var queryResult = await cluster.QueryAsync<dynamic>("select \"Hello World\" as greeting", qo);

                await foreach (var row in queryResult)

                    Console.WriteLine(row);

                var metrics = queryResult.MetaData.Metrics;

                Console.WriteLine(metrics.ElapsedTime);

first one will return metrics as null values, second will load the metrics data.

Reporter: Roi Katz
E-mail: roi.katz@Couchbase.com

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QueryResult metrics(true) - lazy loading clarification