Linq Count consumes more RUs than listing results from a predicate

Describe the bug When using Linq Count function, it consumes more RUs than a listing function.

To Reproduce Just invoke the Count function and compare the RUs against the same query just using a Where clause. You will see that Count consumes more RUs than just listing all the items that matches the criteria.

Expected behavior Linq Count should consume at least the same RUs than the listing

Actual behavior Linq Count consumes more RUs than a listing method

Environment summary SDK Version: 3.31 OS Version: Windows 10

Additional context It seems that the bug is because of this: https://learn.microsoft.com/en-us/azure/cosmos-db/index-overview#index-utilization-for-scalar-aggregate-functions

When I execute the same query with SQL in the Data explorer tool I got different RUs consumption when doing this: SELECT COUNT(c.orgId) FROM c where c.partitionKey= 300741 and c.otherProperty = '921c273b-b653-4cfc-87b2-0bdefa35b6a4'

SELECT COUNT(1) FROM c where c.partitionKey= 300741 and c.otherProperty = '921c273b-b653-4cfc-87b2-0bdefa35b6a4' (consumes more RUs)

I think that the same is happening with other aggregates.

These are the diagnostics from each case (listing vs count). Both of them use the same predicate

Listing { "Summary": { "DirectCalls": { "(200, 0)": 1 }, "RegionsContacted": 1, "GatewayCalls": { "(200, 0)": 3, "(304, 0)": 1 } }, "name": "Typed FeedIterator ReadNextAsync", "id": "a0176700-6939-4a13-b112-e49ee337fd97", "start time": "12:06:29:244", "duration in milliseconds": 1463.8179, "data": { "Client Configuration": { "Client Created Time Utc": "2022-10-26T12:06:15.4508444Z", "MachineId": "vmId:c765492b-d4c9-40b9-a24e-37283ab7f813", "VM Region": "westus", "NumberOfClientsCreated": 1, "NumberOfActiveClients": 1, "ConnectionMode": "Direct", "User Agent": "cosmos-netstandard-sdk/3.29.0|1|X64|Microsoft Windows 10.0.19044|.NET 6.0.7|N|F 00000001|", "ConnectionConfig": { "gw": "(cps:50, urto:10, p:False, httpf: False)", "rntbd": "(cto: 5, icto: -1, mrpc: 30, mcpe: 65535, erd: True, pr: ReuseUnicastPort)", "other": "(ed:False, be:True)" }, "ConsistencyConfig": "(consistency: NotSet, prgns:[], apprgn: )", "ProcessorCount": 4 }, "Query Correlated ActivityId": "789d41ca-0c18-4b2f-9745-7679690c2c7b" }, "children": [ { "name": "Create Query Pipeline", "id": "eb716e79-2d03-46b9-b5f9-27bb55cbeb4d", "start time": "12:06:29:281", "duration in milliseconds": 648.8994, "children": [ { "name": "Get Container Properties", "id": "e67b6cef-a1c4-4a7a-ae79-a1fd109c7cb6", "start time": "12:06:29:286", "duration in milliseconds": 88.0047, "children": [ { "name": "Get Collection Cache", "id": "5b2dd098-ad22-4eaf-9d67-3d0f2ec82352", "start time": "12:06:29:286", "duration in milliseconds": 0.001 }, { "name": "Read Collection", "id": "a0a57a69-c6cd-4186-9b7a-94b88b6b213a", "start time": "12:06:29:287", "duration in milliseconds": 85.7554, "data": { "Client Side Request Stats": { "Id": "AggregatedClientSideRequestStatistics", "ContactedReplicas": [], "RegionsContacted": [], "FailedReplicas": [], "AddressResolutionStatistics": [], "StoreResponseStatistics": [], "HttpResponseStats": [ { "StartTimeUTC": "2022-10-26T12:06:29.2873661Z", "DurationInMs": 85.1029, "RequestUri": "https://cosmos-creativemgt-feature-001-eastus2.documents.azure.com/dbs/CreativeManagement/colls/Creative", "ResourceType": "Collection", "HttpMethod": "GET", "ActivityId": "a00b6b07-d1ab-4e6b-8403-954ea8a616c8", "StatusCode": "OK" } ] } } } ] }, { "name": "Service Interop Query Plan", "id": "78cf86d1-d19f-4478-b9b5-1abac6ee5abe", "start time": "12:06:29:613", "duration in milliseconds": 104.1274 }, { "name": "Get Partition Key Ranges", "id": "a480270f-c623-4bd7-86a7-17535f2e0456", "start time": "12:06:29:738", "duration in milliseconds": 158.3074, "children": [ { "name": "Try Get Overlapping Ranges", "id": "e014c31d-9e7d-4f33-bda9-93a24466d47d", "start time": "12:06:29:751", "duration in milliseconds": 141.159, "data": { "PKRangeCache Info(2022-10-26T12:06:29.8851088Z)": { "Previous Continuation Token": null, "Continuation Token": "\"45\"" } }, "children": [ { "name": "Read PartitionKeyRange Change Feed", "id": "0ebd6cc8-840e-4368-a040-db0f0e4b3504", "start time": "12:06:29:751", "duration in milliseconds": 67.3504, "data": { "Client Side Request Stats": { "Id": "AggregatedClientSideRequestStatistics", "ContactedReplicas": [], "RegionsContacted": [], "FailedReplicas": [], "AddressResolutionStatistics": [], "StoreResponseStatistics": [], "HttpResponseStats": [ { "StartTimeUTC": "2022-10-26T12:06:29.7517593Z", "DurationInMs": 67.0803, "RequestUri": "https://cosmos-creativemgt-feature-001-eastus2.documents.azure.com/dbs/k6BrAA==/colls/k6BrAN5WfmQ=/pkranges", "ResourceType": "PartitionKeyRange", "HttpMethod": "GET", "ActivityId": "de5206e2-306b-4a0e-8073-d53e944c7071", "StatusCode": "OK" } ] } } }, { "name": "Read PartitionKeyRange Change Feed", "id": "b4243d03-08fb-4961-a84a-6ef671f4413d", "start time": "12:06:29:819", "duration in milliseconds": 65.8393, "data": { "Client Side Request Stats": { "Id": "AggregatedClientSideRequestStatistics", "ContactedReplicas": [], "RegionsContacted": [], "FailedReplicas": [], "AddressResolutionStatistics": [], "StoreResponseStatistics": [], "HttpResponseStats": [ { "StartTimeUTC": "2022-10-26T12:06:29.8192566Z", "DurationInMs": 65.6472, "RequestUri": "https://cosmos-creativemgt-feature-001-eastus2.documents.azure.com/dbs/k6BrAA==/colls/k6BrAN5WfmQ=/pkranges", "ResourceType": "PartitionKeyRange", "HttpMethod": "GET", "ActivityId": "bb90da48-79dc-4ff5-9118-d44c44be9209", "StatusCode": "NotModified", "ReasonPhrase": "Not Modified" } ] } } } ] } ] } ] }, { "name": "MoveNextAsync", "id": "a9b1530d-f718-43cb-bb3d-36373b54d850", "start time": "12:06:29:956", "duration in milliseconds": 732.3981, "children": [ { "name": "Prefetching", "id": "11fbe8fd-1e0a-4529-bc74-9e9690637d20", "start time": "12:06:29:975", "duration in milliseconds": 0.0541 }, { "name": "[,FF) move next", "id": "19ea0ff6-6568-41f5-942b-ca78699bf6c1", "start time": "12:06:29:983", "duration in milliseconds": 701.9077, "children": [ { "name": "Prefetch", "id": "d6f32371-a0ab-4e3c-9fda-e22177743a77", "start time": "12:06:29:990", "duration in milliseconds": 692.9626, "children": [ { "name": "[,FF) move next", "id": "cd6c8529-e9ff-4f4e-aa09-b1765b7706c7", "start time": "12:06:29:990", "duration in milliseconds": 691.4818, "data": { "Query Metrics": "Retrieved Document Count : 0 \r\nRetrieved Document Size : 0 bytes \r\nOutput Document Count : 0 \r\nOutput Document Size : 49 bytes \r\nIndex Utilization : 0.00 % \r\nTotal Query Execution Time : 0.44 milliseconds\r\n Query Preparation Time : 0.16 milliseconds\r\n Index Lookup Time : 0.14 milliseconds\r\n Document Load Time : 0.00 milliseconds\r\n Runtime Execution Times : 0.00 milliseconds\r\n Document Write Time : 0.00 milliseconds\r\n\r\nIndex Utilization Information\r\n Utilized Single Indexes\r\n Potential Single Indexes\r\n Utilized Composite Indexes\r\n Potential Composite Indexes\r\n" }, "children": [ { "name": "Microsoft.Azure.Cosmos.Handlers.RequestInvokerHandler", "id": "2392acd9-90e0-42cb-ab11-c82c17c79140", "start time": "12:06:29:999", "duration in milliseconds": 580.642, "children": [ { "name": "Microsoft.Azure.Cosmos.Handlers.DiagnosticsHandler", "id": "99468ccb-c73d-4d3f-992d-5902f6d9ed32", "start time": "12:06:30:003", "duration in milliseconds": 577.2423, "data": { "System Info": { "systemHistory": [ { "dateUtc": "2022-10-26T12:06:15.8467221Z", "cpu": 2.736, "memory": 6197376, "threadInfo": { "isThreadStarving": "no info", "availableThreads": 32765, "minThreads": 4, "maxThreads": 32767 }, "numberOfOpenTcpConnection": 0 }, { "dateUtc": "2022-10-26T12:06:26.0353481Z", "cpu": 36.196, "memory": 6184624, "threadInfo": { "isThreadStarving": "False", "threadWaitIntervalInMs": 12.8105, "availableThreads": 32765, "minThreads": 4, "maxThreads": 32767 }, "numberOfOpenTcpConnection": 1 } ] } }, "children": [ { "name": "Microsoft.Azure.Cosmos.Handlers.RetryHandler", "id": "b5985aa8-37d6-43ca-9055-b9b551df2002", "start time": "12:06:30:003", "duration in milliseconds": 577.2104, "children": [ { "name": "Microsoft.Azure.Cosmos.Handlers.RouterHandler", "id": "87b76c23-7893-4318-9555-f3f9feb3f1ad", "start time": "12:06:30:003", "duration in milliseconds": 577.1246, "children": [ { "name": "Microsoft.Azure.Cosmos.Handlers.TransportHandler", "id": "69dce7ac-8834-4cd7-a53c-7c387cf1c26f", "start time": "12:06:30:003", "duration in milliseconds": 577.1137, "children": [ { "name": "Microsoft.Azure.Documents.ServerStoreModel Transport Request", "id": "46446c23-1dc0-4c19-b08d-1e8550c33e58", "start time": "12:06:30:003", "duration in milliseconds": 577.0337, "data": { "Client Side Request Stats": { "Id": "AggregatedClientSideRequestStatistics", "ContactedReplicas": [ { "Count": 1, "Uri": "rntbd://cdb-ms-prod-eastus2-be32.documents.azure.com:14033/apps/dd27c7fe-adac-4112-8c0e-d60a0756e094/services/0d29a44a-d788-4c8a-860d-a7a0d8181010/partitions/49436a70-094e-4c49-a176-1ea65ca321ac/replicas/133080948162629968p/" } ], "RegionsContacted": [ "https://cosmos-creativemgt-feature-001-eastus2.documents.azure.com/" ], "FailedReplicas": [], "AddressResolutionStatistics": [ { "StartTimeUTC": "2022-10-26T12:06:30.0415808Z", "EndTimeUTC": "2022-10-26T12:06:30.1087655Z", "TargetEndpoint": "https://cosmos-creativemgt-feature-001-eastus2.documents.azure.com//addresses/?$resolveFor=dbs%2fk6BrAA%3d%3d%2fcolls%2fk6BrAN5WfmQ%3d%2fdocs&$filter=protocol eq rntbd&$partitionKeyRangeIds=0" } ], "StoreResponseStatistics": [ { "ResponseTimeUTC": "2022-10-26T12:06:30.5669916Z", "ResourceType": "Document", "OperationType": "Query", "LocationEndpoint": "https://cosmos-creativemgt-feature-001-eastus2.documents.azure.com/", "StoreResult": { "ActivityId": "589b28e6-6e09-450f-aea7-ec274878a977", "StatusCode": "Ok", "SubStatusCode": "Unknown", "LSN": 36, "PartitionKeyRangeId": "0", "GlobalCommittedLSN": 36, "ItemLSN": -1, "UsingLocalLSN": true, "QuorumAckedLSN": 36, "SessionToken": "0#36#7=-1", "CurrentWriteQuorum": 3, "CurrentReplicaSetSize": 4, "NumberOfReadRegions": 1, "IsValid": true, "StorePhysicalAddress": "rntbd://cdb-ms-prod-eastus2-be32.documents.azure.com:14033/apps/dd27c7fe-adac-4112-8c0e-d60a0756e094/services/0d29a44a-d788-4c8a-860d-a7a0d8181010/partitions/49436a70-094e-4c49-a176-1ea65ca321ac/replicas/133080948162629968p/", "RequestCharge": 2.89, "RetryAfterInMs": null, "BELatencyInMs": "0.866", "transportRequestTimeline": { "requestTimeline": [ { "event": "Created", "startTimeUtc": "2022-10-26T12:06:30.1511306Z", "durationInMs": 0.0381 }, { "event": "ChannelAcquisitionStarted", "startTimeUtc": "2022-10-26T12:06:30.1511687Z", "durationInMs": 336.3407 }, { "event": "Pipelined", "startTimeUtc": "2022-10-26T12:06:30.4875094Z", "durationInMs": 9.109 }, { "event": "Transit Time", "startTimeUtc": "2022-10-26T12:06:30.4966184Z", "durationInMs": 60.5555 }, { "event": "Received", "startTimeUtc": "2022-10-26T12:06:30.5571739Z", "durationInMs": 1.7869 }, { "event": "Completed", "startTimeUtc": "2022-10-26T12:06:30.5589608Z", "durationInMs": 0 } ], "serviceEndpointStats": { "inflightRequests": 1, "openConnections": 1 }, "connectionStats": { "waitforConnectionInit": "True", "callsPendingReceive": 0, "lastSendAttempt": "2022-10-26T12:06:30.4277964Z", "lastSend": "2022-10-26T12:06:30.4279022Z", "lastReceive": "2022-10-26T12:06:30.4867216Z" }, "requestSizeInBytes": 599, "requestBodySizeInBytes": 142, "responseMetadataSizeInBytes": 935, "responseBodySizeInBytes": 49 }, "TransportException": null } } ], "HttpResponseStats": [ { "StartTimeUTC": "2022-10-26T12:06:30.0416179Z", "DurationInMs": 66.8717, "RequestUri": "https://cosmos-creativemgt-feature-001-eastus2.documents.azure.com//addresses/?$resolveFor=dbs%2fk6BrAA%3d%3d%2fcolls%2fk6BrAN5WfmQ%3d%2fdocs&$filter=protocol eq rntbd&$partitionKeyRangeIds=0", "ResourceType": "Document", "HttpMethod": "GET", "ActivityId": "589b28e6-6e09-450f-aea7-ec274878a977", "StatusCode": "OK" } ] } } } ] } ] } ] } ] } ] }, { "name": "Get Cosmos Element Response", "id": "f6fde339-d0af-4a7c-b46e-902f61322c1f", "start time": "12:06:30:588", "duration in milliseconds": 90.1951 } ] } ] } ] } ] }, { "name": "Query Response Serialization", "id": "a924e4a3-d75b-4d07-b4cf-ab9049e15dff", "start time": "12:06:30:699", "duration in milliseconds": 8.4512 } ] }

Count { "Summary": { "DirectCalls": { "(200, 0)": 1 }, "RegionsContacted": 1 }, "name": "Aggregate LINQ Operation", "id": "8aa45255-5885-433e-9495-358d8d136037", "start time": "12:12:41:134", "duration in milliseconds": 610.7035, "data": { "Query Correlated ActivityId": "682b13c7-8907-4b5c-8039-6ce8d1e1bf7c" }, "children": [ { "name": "Create Query Pipeline", "id": "4d955850-d300-4a44-9658-217e8b178120", "start time": "12:12:41:140", "duration in milliseconds": 21.183, "children": [ { "name": "Get Container Properties", "id": "4260925e-930a-4671-97df-07c0e19179f1", "start time": "12:12:41:140", "duration in milliseconds": 0.0195, "children": [ { "name": "Get Collection Cache", "id": "a2be07a3-1def-41d2-8724-3aae670837ef", "start time": "12:12:41:140", "duration in milliseconds": 0.0008 } ] }, { "name": "Service Interop Query Plan", "id": "39ccce2a-2a61-421a-a479-4d70603d2955", "start time": "12:12:41:140", "duration in milliseconds": 2.1466 }, { "name": "Get Partition Key Ranges", "id": "c49e8317-75c8-4d37-a6c0-c06ca1008a00", "start time": "12:12:41:142", "duration in milliseconds": 0.1914, "children": [ { "name": "Try Get Overlapping Ranges", "id": "bc6aeb95-2066-4101-b3a7-c0f3e92c73d6", "start time": "12:12:41:143", "duration in milliseconds": 0.0737 } ] } ] }, { "name": "MoveNextAsync", "id": "919a2c4f-610e-4504-a773-fd7498a024c8", "start time": "12:12:41:175", "duration in milliseconds": 499.4397, "children": [ { "name": "Prefetching", "id": "0074140d-9414-491d-9f4e-a9fe70af3268", "start time": "12:12:41:176", "duration in milliseconds": 0.0038 }, { "name": "[,FF) move next", "id": "83c64c20-f8a4-41cd-bf56-34424371a4e7", "start time": "12:12:41:176", "duration in milliseconds": 498.458, "children": [ { "name": "[,FF) move next", "id": "bd88c00a-c3fa-417c-9cf8-7c6ec19a394f", "start time": "12:12:41:180", "duration in milliseconds": 492.2235, "data": { "Query Metrics": "Retrieved Document Count : 0 \r\nRetrieved Document Size : 0 bytes \r\nOutput Document Count : 1 \r\nOutput Document Size : 61 bytes \r\nIndex Utilization : 100.00 % \r\nTotal Query Execution Time : 0.46 milliseconds\r\n Query Preparation Time : 0.18 milliseconds\r\n Index Lookup Time : 0.15 milliseconds\r\n Document Load Time : 0.00 milliseconds\r\n Runtime Execution Times : 0.00 milliseconds\r\n Document Write Time : 0.00 milliseconds\r\n\r\nIndex Utilization Information\r\n Utilized Single Indexes\r\n Potential Single Indexes\r\n Utilized Composite Indexes\r\n Potential Composite Indexes\r\n" }, "children": [ { "name": "Microsoft.Azure.Cosmos.Handlers.RequestInvokerHandler", "id": "1802ace5-d3fa-4b29-844e-ba1a8372a87b", "start time": "12:12:41:180", "duration in milliseconds": 491.7476, "children": [ { "name": "Microsoft.Azure.Cosmos.Handlers.DiagnosticsHandler", "id": "e601bf60-cbfb-404b-b01e-46abe81fb477", "start time": "12:12:41:180", "duration in milliseconds": 491.6764, "data": { "System Info": { "systemHistory": [ { "dateUtc": "2022-10-26T12:06:15.8467221Z", "cpu": 2.736, "memory": 6197376, "threadInfo": { "isThreadStarving": "no info", "availableThreads": 32765, "minThreads": 4, "maxThreads": 32767 }, "numberOfOpenTcpConnection": 0 }, { "dateUtc": "2022-10-26T12:06:26.0353481Z", "cpu": 36.196, "memory": 6184624, "threadInfo": { "isThreadStarving": "False", "threadWaitIntervalInMs": 12.8105, "availableThreads": 32765, "minThreads": 4, "maxThreads": 32767 }, "numberOfOpenTcpConnection": 1 }, { "dateUtc": "2022-10-26T12:12:38.8530710Z", "cpu": 22.091, "memory": 5899564, "threadInfo": { "isThreadStarving": "False", "threadWaitIntervalInMs": 0.0331, "availableThreads": 32761, "minThreads": 4, "maxThreads": 32767 }, "numberOfOpenTcpConnection": 2 } ] } }, "children": [ { "name": "Microsoft.Azure.Cosmos.Handlers.RetryHandler", "id": "b1c1f26c-bbce-45c4-93e9-34ceb65f488a", "start time": "12:12:41:180", "duration in milliseconds": 491.6481, "children": [ { "name": "Microsoft.Azure.Cosmos.Handlers.RouterHandler", "id": "0e4a6885-6a8e-43fb-bdcc-d340608cbe04", "start time": "12:12:41:180", "duration in milliseconds": 491.6138, "children": [ { "name": "Microsoft.Azure.Cosmos.Handlers.TransportHandler", "id": "fcfd4e02-b008-4730-87f3-c421f0d5c0c9", "start time": "12:12:41:180", "duration in milliseconds": 491.6049, "children": [ { "name": "Microsoft.Azure.Documents.ServerStoreModel Transport Request", "id": "58cebe99-8f29-4fb6-8a2f-2853d86abd7c", "start time": "12:12:41:180", "duration in milliseconds": 491.5033, "data": { "Client Side Request Stats": { "Id": "AggregatedClientSideRequestStatistics", "ContactedReplicas": [ { "Count": 1, "Uri": "rntbd://cdb-ms-prod-eastus2-be32.documents.azure.com:14307/apps/dd27c7fe-adac-4112-8c0e-d60a0756e094/services/0d29a44a-d788-4c8a-860d-a7a0d8181010/partitions/49436a70-094e-4c49-a176-1ea65ca321ac/replicas/133080948102471798s/" } ], "RegionsContacted": [ "https://cosmos-creativemgt-feature-001-eastus2.documents.azure.com/" ], "FailedReplicas": [], "AddressResolutionStatistics": [], "StoreResponseStatistics": [ { "ResponseTimeUTC": "2022-10-26T12:12:41.6586065Z", "ResourceType": "Document", "OperationType": "Query", "RequestSessionToken": "0:0#36#7=-1", "LocationEndpoint": "https://cosmos-creativemgt-feature-001-eastus2.documents.azure.com/", "StoreResult": { "ActivityId": "f157a3c9-ace8-4202-9dd6-87ac5757e142", "StatusCode": "Ok", "SubStatusCode": "Unknown", "LSN": 36, "PartitionKeyRangeId": "0", "GlobalCommittedLSN": 35, "ItemLSN": -1, "UsingLocalLSN": true, "QuorumAckedLSN": -1, "SessionToken": "0#36#7=-1", "CurrentWriteQuorum": -1, "CurrentReplicaSetSize": -1, "NumberOfReadRegions": 1, "IsValid": true, "StorePhysicalAddress": "rntbd://cdb-ms-prod-eastus2-be32.documents.azure.com:14307/apps/dd27c7fe-adac-4112-8c0e-d60a0756e094/services/0d29a44a-d788-4c8a-860d-a7a0d8181010/partitions/49436a70-094e-4c49-a176-1ea65ca321ac/replicas/133080948102471798s/", "RequestCharge": 3.09, "RetryAfterInMs": null, "BELatencyInMs": "0.809", "transportRequestTimeline": { "requestTimeline": [ { "event": "Created", "startTimeUtc": "2022-10-26T12:12:41.1813995Z", "durationInMs": 0.0217 }, { "event": "ChannelAcquisitionStarted", "startTimeUtc": "2022-10-26T12:12:41.1814212Z", "durationInMs": 413.2362 }, { "event": "Pipelined", "startTimeUtc": "2022-10-26T12:12:41.5946574Z", "durationInMs": 2.2193 }, { "event": "Transit Time", "startTimeUtc": "2022-10-26T12:12:41.5968767Z", "durationInMs": 60.2185 }, { "event": "Received", "startTimeUtc": "2022-10-26T12:12:41.6570952Z", "durationInMs": 1.4703 }, { "event": "Completed", "startTimeUtc": "2022-10-26T12:12:41.6585655Z", "durationInMs": 0 } ], "serviceEndpointStats": { "inflightRequests": 1, "openConnections": 1 }, "connectionStats": { "waitforConnectionInit": "True", "callsPendingReceive": 0, "lastSendAttempt": "2022-10-26T12:12:41.5343003Z", "lastSend": "2022-10-26T12:12:41.5343772Z", "lastReceive": "2022-10-26T12:12:41.5935887Z" }, "requestSizeInBytes": 616, "requestBodySizeInBytes": 143, "responseMetadataSizeInBytes": 900, "responseBodySizeInBytes": 61 }, "TransportException": null } } ] } } } ] } ] } ] } ] } ] }, { "name": "Get Cosmos Element Response", "id": "4e486539-ad3e-4f1f-84ac-2e06b9cd3f96", "start time": "12:12:41:672", "duration in milliseconds": 0.2666 } ] } ] } ] }, { "name": "MoveNextAsync", "id": "e2e5ec05-c1dd-4ea2-b38b-86ff4d293b43", "start time": "12:12:41:732", "duration in milliseconds": 0.0092 }, { "name": "Query Response Serialization", "id": "40db45ba-4698-44da-a649-a5713f568374", "start time": "12:12:41:739", "duration in milliseconds": 5.4759 } ] }

[ealsur]

@adityasa Can we please track any documentation update required based on this thread?

[rtellez91]

Thanks @vzubariev, for a moment I thought I was doing something wrong. So it seems that we have no option to efficiently do a count using Linq. I think at least this should be in the documentation or somewhere so is not easy to spot that during development.