Use an unsupported aggregation.. After blending, CountD works fine on primary datasource, but when I try to use CountD on secondary datasource tableau gives error: "Cannot blend secondary data source as one or more fields use an unsupported aggregation"Hi, Where Tableau v9 introduced level of detail expressions and Tableau v10 introduced cross-data source joins there are a number of use cases where we previously needed data blending that we now don’t, so the first thing I always look at is whether we really need a blend to get the desired results Also there are various cases where the non. Use an unsupported aggregation.

 
 After blending, CountD works fine on primary datasource, but when I try to use CountD on secondary datasource tableau gives error: "Cannot blend secondary data source as one or more fields use an unsupported aggregation"Hi, Where Tableau v9 introduced level of detail expressions and Tableau v10 introduced cross-data source joins there are a number of use cases where we previously needed data blending that we now don’t, so the first thing I always look at is whether we really need a blend to get the desired results Also there are various cases where the nonUse an unsupported aggregation. "cannot blend the secondary data source because one or more fields use an unsupported aggregation" Attached is the workbook that could provide more clarity on my question

student) student_id, (SELECT MIN(b. However, to get to that point sometimes the granularity of the view has to be increased (so that a dimension filter from the secondary can be done using an aggregate filter, or to make sure all the linking dimensions are in the view, etc. Non-aggregate measures — such as type: yesno and type: number — are the only measures that can reference other measures or aggregations. Make sure that you are blending on dimensions present in the view or on all of the. Cannot blend the secondary data source because one or more fields use an unsupported aggregation can some one has faced this type of issue before or any idea please share. The strange thing is running the query (the one that the Java API gives on a to string) through the REST endpoint works fine. Many target systems don't support it at all (e. MongoDB 3. We use three kinds of cookies on our websites: required, functional, and advertising. Hello. Create a calculated field, with some business logic, to choose which to show in the case of multiple. ×Sorry to interrupt. Q&A for work. Share. Loading. I get the the following error: unsupported aggregate action Digging through the source code I found there is no handler for collect. Chicken + Choice of DrinkBurger + Choice of DrinkSpaghetti + Choice of Drink . conf and creating a NEW bucket with a new API key in Influx. 12. Step 7: Once composite provider activated, you can see all key figures. Change Default to be False — This tells the Format as HTML Pro step to not use the default data type as dictated by the recordset,. Learn more about Collectives Teams. Table 2 (Secondary): Location | Item Sold | Price | Date. 2. Yup. Connecting Excel to MySQL with Data Connection Wizard (Legacy Wizard) Start a new worksheet. By adding one argument into an existing aggregate function, such as sum() , max() , count(), you can define any group-by level that you want for the aggregation. Cannot blend the secondary data source because one or more fields use an unsupported aggregation. Documentation on relationship: Relate Your Data - Tableau. e. Inn order to get the top 10 results you would need to use the terms aggregation with a filters sub-aggregation. UNSUPPORTED_TABLE_ARGUMENTWindowed Aggregations. Use a Join instead of Blending: If blending is not necessary for your analysis, you can try joining the data sources instead. We use three kinds of cookies on our websites: required, functional, and advertising. Loading. Thanks for your help . Thank you for the replace data source tip. A value greater than 0 treats a grade item's grades as extra credit during aggregation. category. "cannot blend the secondary data source because one or more fields use an unsupported aggregation" Attached is the workbook that could provide more clarity on my question. Click the Networking view. Hi All! I would like to ask for your help, I do have two data sources: BI Cube (primary source) & Excel file (secondary) BI Cube Data 1 pc. CSS Error In both instances, once I take customer country from my secondary source, I get this error: Cannot blend secondary data source as one or more fields use an unsupported aggregation . MULTI_SOURCES_UNSUPPORTED_FOR_EXPRESSION. It shows the next message: "Cannot blend the secondary data source because one or more fields use an unsupported aggregation". We use three kinds of cookies on our websites: required, functional, and advertising. You can choose whether functional and advertising cookies apply. Step 2: Build the map. learning module contains a number of ways to aggregate model udpates with recommended default configuration: In this tutorial, we explain the underlying motivation, how they are implemented, and provide suggestions for how to customize their configuration. When you import metadata, Framework Manager assigns values to the Usage and Regular Aggregate properties for query items and measures depending on the type of object that the query item or measure is in. Hello Jim, Thank You for your reply. I've tried that in the past, and I was always blocked by the unsupported aggregation message. I am trying to put my LOD calculation (below) on the rows shelf but encountering "cannot blend the secondary data source because one or more fields use an unsupported aggregation" {include [DATE MONTH],[STATE]: sum([Quantity Customers Served])} Verify if one of the measures coming from the cube data source has a default aggregation different than SUM, MIN, MAX, COUNT. Cannot blend the secondary data source because one or more fields use. The composite buckets are built from the combinations of the values. The level added can be any dimension independent of the. Step 6: Activate Composite Provider and you won’t see any warnings. This ordering is unspecified by default, but can be controlled by writing an ORDER BY clause within the aggregate call, as shown in Section 4. keep the dimensions in the view. Cannot Blend Secondary Data Source - Unsupported Aggregation. Thanks for the suggestion. ” Causes and Workarounds for a Blending Limitation Errors 1. Buckets can only be sorted on a sub-aggregator path that is built out of zero or more single-bucket aggregations within the path and a final single-bucket or a metrics aggregation at the path end. The goal of this type of configuration is to maximize the use of the aggregate table. For example, you would not be able to use a measure with the expression <<root. Then the pivot rearranges it, creating columns for the in values from the name column, and using the aggregate ( max (data)) for the value in that column, which should give the desired results. Ditto: { FIXED [Patient ID] : COUNTD([Patient ID]) } Yet there it is in your workbook, very happy and functional. Ritesh Bisht (Member) 6 years ago. 1. g. [Secondary Source Field]))}) This seems to be the only calculation that is valid. Aggregate requirements. Elasticsearch organizes aggregations into three categories: Metric aggregations that calculate metrics, such as a sum or average, from field values. We use three kinds of cookies on our websites: required, functional, and advertising. node. Hello Tableau world!! Am running into the strangest problem when data blending with V8. END . Change the C# code in the Program. Because in Tableau, you don't use COUNTD function when Blending data source. We have a calculated filed where an aggregation (COUNTD) is done on a filed of secondary data source. Expand Post. The solution is not nice, but i. id) FROM table_b b WHERE b. Cannot blend the secondary data source because one or more fields use an unsupported aggregation. Learn more about Collectives Teams. Unsupported aggregation stages. ORDER BY clause) but you should expect the order not to match. Unsupported aggregate subquery with non-equality correlated predicates. If I use the parameter from the secondary data source, I get the following error: "Cannot blend the secondary data source because one or more fields use an unsupported aggregation". Bucket aggregations that group documents into buckets, also called bins, based on field values, ranges, or other criteria. 7. When I use a terms aggregation, it works fine and returns buckets as expected. The aggregate functions array_agg, string_agg, and xmlagg, as well as similar user-defined aggregate functions, produce meaningfully different result values depending on the order of the input values. Returns the numerical value of the string as an integer. The driver does not provide methods for all aggregation pipeline operators in the Query API. As tableau automatically aggregates its value using predefined aggregate functions. In order to create the waffle chart I am blending it with another datasource using the calculated field defined as [Week 5 (Week5Bond)]. Aggregated values are computed by aggregating the elements of the expression rather than the result. using select. However, to get to that point sometimes the granularity of the view has to be increased (so that a dimension filter from the secondary can be done using an aggregate filter, or to make sure all the linking dimensions are in the view, etc. I've attached a super quick example using 10. We use three kinds of cookies on our websites: required, functional, and advertising. Use a derived table to nest aggregations or double aggregate. Data blending has some limitations regarding non-additive aggregates such as COUNTD, MEDIAN and RAWSQLAGG. Another view with the details. Data blending has some limitations regarding non-additive aggregates such as COUNTD, MEDIAN and. I am trying to use the below formula instead of countd function because my data comes from Impala. status='terima' and daftar. ELSE D1. AVG is a quasi-additive aggregation and may not be supported when blending. Parameters expression : Non aggregating, non grouping expression in the SELECT list. Sandhya. We don't get row-level data from secondary sources on a blend. The primary. The problem is when I try to calculate the median of that same measure. Choose the field well containing the field that you want to apply an aggregate function to. This could be due to a typo in the aggregation name or the use of an unsupported aggregation. Norbert, I'm baffled. "-5. Click From Other Sources, and then click From Data Connection Wizard. Click on the different cookie categories to find out more about each category and to change the default settings. ERROR: [HLS 214-256] in function 'vadd()': Unsupported aggregate pragma / directive on variable 'inner' as the bit-width after aggregation (24576) is larger than 4096 (justtesting / code / top. Q&A for work. . query: true), while for other CDS views, I got the "Element contains. ) I need to revisit my understanding of the limitations here!Cannot blend the secondary data source because one or more fields use an unsupported aggregation. As of Version 3. Blending takes place in the 6th step of the order of operation after the data table for the individual worksheet is set and the filters applied - data from the secondary source are aggregated at the level of the link and brought to the primary as an. InternalFilter as an unsupported. Expand the Datacenter and select the Distributed Switch. These dimensions were also used as filters in the particular sheet. We have to use two data sources for the visualization. I couldn’t get anything to work. Let's say for example that you wanted. I am trying to put my LOD calculation (below) on the rows shelf but encountering "cannot blend the secondary data source because one or more fields use an unsupported aggregation" {include [DATE MONTH],[STATE]: sum([Quantity Customers Served])}We use three kinds of cookies on our websites: required, functional, and advertising. e. Dimension plus instance of that dimension. Cannot blend the secondary data source because one or more fields use an unsupported aggregation. Provide details and share your research! But avoid. When projecting or adding/resetting a field within an embedded document, you can either use dot notation, as in. You can choose whether functional and advertising cookies apply. I use {Fixed [Owning Location Code], [Location Code], [Vehicle Group], month([MB Date]) :Avg([Avg Fleet])} to get the Avg. We use three kinds of cookies on our websites: required, functional, and advertising. 1 MongoDB Aggregate shows no result. I am using Tableau 2018. Cannot blend the secondary data source because one or more fields use an unsupported aggregation" when Data Blending Hello Everyone, I am using one data source which is a LIVE connection and I have duplicated same data source , the reason behind duplication is i want to have total of category which will be constant and it will not. ) A LOD calc is also trying to do stuff at the row level. Consider a books collection with the following document: {"_id": 1,Cannot blend the secondary data source because one or more fields use an unsupported aggregation. Solution using relationship:Aggregates functions we use only in SELECT block. Be sure to use aggregation functions (SUM, AVG, etc. 1 Connected to Tableau Server as Main DS and Live Connection to an excel file as secundary DS . 0. Tommy Sims (Member) Set the table calculation to COMPUTE USING using the KM Date field. We use three kinds of cookies on our websites: required, functional, and advertising. 5. CSS ErrorI'd like to always use D1 except when it is NULL and then I'd like to use D2. When trying to use COUNTD () it gives this error: cannot blend secondary data source because one or more fields use an unsupported aggregation when. Additional summary functions are available in the expression editor. Ditto: { FIXED [Patient ID] : COUNTD([Patient ID]) } Yet there it is in your workbook, very happy and functional. We use three kinds of cookies on our websites: required, functional, and advertising. sh. I think it may be because we are using the CountD function to calculate the customer count from the secondary data source. I need my calc to run on the row level irrespective of the view. tff. unsupported aggregation. However, when the linking dimension is not in the view, non-additive aWhen you add a measure to the view, Tableau automatically aggregates its values. Click on the different cookie categories to find out more about each category and. ×Sorry to interrupt. s3. So in my case where CKF1 = RKF1 - RKF2, I will need to store this result in the database as a key figure. Can anyone offer a solution? The total headcounts is a calculated field on datasource2, in case that helps. First, let’s start with a simple example of a Structured Streaming query - a streaming word count. Thus I have this calc below . Now select a data source you want to connect to, and click Next. QNAP’s QuRouter OS simplifies managing high-speed and high-coverage LAN/WAN. To specify collation when you query documents in the MongoDB Atlas UI, see Specify Collation. I have two datasets; one is a shape file that contains regions and locations. You can choose whether functional and advertising cookies apply. Cannot blend the secondary data source because one or more fields use an unsupported aggregation. But considering using it with Materialized View, the doc says SimpleAggregateFunction(name, types_of_arguments…) data type stores the current value of the aggregate function, and does not store its full state as AggregateFunction dose, which means. Hi Judy, Could you try 'swapping' the datasources, so the one with the [Customer_Code] would become your Primary? You could do it just for one view, Both Primary and Secondary data sources have duplicate rows due to multiple joins in data prep. NET dialect) to turn each line into 31 documents. image 959×146 4. Shell Method. Credits to Jonathan Drummey for the below workaround Cannot blend the secondary data source because one or more fields use an unsupported aggregation . Use SIZE (): This is similar to #1, but provides a better visual and is more flexible with other analyses. 3 and I have created aggregates AGG for fields from data extract and excel file. Use aggregation instead. Non-additive aggregates are aggregate functions that produce results that cannot be aggregated along a dimension. This happens only when the data sources are impala. I've read through the various posts on here, plus the general troubleshooting posts on the Tableau page on blending data, but can't find a solution. There are non-additive aggregates from a multi-connection data source with an active connection. and an identical LOD expression to get the Avg. If the user select May 2018. cannot blend the secondary data source because one or more fields use an unsupported aggregation. You can choose whether functional and advertising cookies apply. When a user filters to find the high-level, the detail view will be filtered and you'll get it all, without having to monkey around trying to blend cubes and relational data. When you try to do that, Tableau generates the "Cannot blend the secondary data source. Non-aggregate measures do not perform any aggregation and thus will not perform a double. Outputs documents in order of nearest to farthest from a specified point. The primary one is called Dim_Service_Status. Unsupported aggregations in data blending Hello, I have a distributor dataset with product ships and returns (one report covering six months), and a retailer dataset with product retail sales and stock (covering the same six months but composed of a number of weekly reports). Cannot blend the secondary data source because one or more fields use. Filter each of the data sources independently on the more granular dimensions. Drilldown query with no available dimensionThe drive may be using a unsupported format. Detailed procedure: Open the vSphere Web client. If this posts assists in resolving the question, please mark it helpful or as the 'correct answer' if it resolves the. 2. ” Causes and Workarounds for a Blending Limitation Errors. Hello I am having a problem with the relationship between two data sources. CallTime Avg (internal)>> because CallTime Avg (internal) is interpreted as being. These dimensions were also used as filters in the particular sheet. (See Section 3. You can choose whether functional and advertising cookies apply. An introduction to windowed aggregations. Data blending has some limitations regarding non-additive aggregates such as COUNTD, MEDIAN, and RAWSQLAGG. If this posts assists in resolving the question, please mark it helpful or as the 'correct answer' if it resolves the. How to do mongo aggregation. 75K subscribers 3K views 4 years ago Cannot blend the secondary data source because one or more fields use an unsupported aggregation It’s cable. The issue was that the bucket sensor that I had previously defined in my telegraf. For example am having column called "Name" in my first data source, in second data sources am having column called "F Name". These dimensions were also used as filters in the particular sheet. System. For example, see Text Search in the Aggregation Pipeline. Aggregate using one or more operations over the specified axis. You can choose whether functional and. When I calculate the average of a measure and use the filter, it works perfectly fine. I put a twb file. We use three kinds of cookies on our websites: required, functional, and advertising. Can't see what you are actually doing but Blending data has its limits. Which almost works, but if I then try to use the resulting calculated field as the “angle” variable for a pie chart, I get the following error: Cannot blend the secondary data source because one or more fields use an unsupported aggregationnumber of records (datasource1)/total headcounts (datasource2) and i get the red pill telling me "cannot blend the secondary datasource because one or more fields use an unsupported aggregation". Cannot blend the secondary data source because one or more fields use an unsupported aggregation Did some research on this and found plenty of "workarounds" with no. If a query asks for sales figures for all soft drinks, the aggregate table should be used for Coke and Pepsi and the detail data for the other brands. unsupported aggregation from blended data problem. but no collectToAggregationThe SQL Language. Sum, average, and median are common aggregations; for a complete list, see List of Predefined Aggregations in Tableau. There are two types of calculated fields: on a data set level and on on analysis level. I have two data sources to be used but need the count distinct of users from both the data sources. Even if I don't join the 2 data sources and just blend them by "Region" and "Store Name", I still get "Cannot blend the secondary data source because one or more fields use an unsupported aggregation" on dragging Total Utilized Money field into the view. We use three kinds of cookies on our websites: required, functional, and advertising. Correlated references to a. Good morning @Fred Yu (Customer) . I have 2 duplicate data sources that I am blending together (they are duplicate because I want to filter the same data source 2 different ways but show it in. How should I got about with this? Thank you. You can choose whether functional. (Ditto the FIXED countD. From the Data pane, drag a dimension field to Label on the Marks card. To add aggregation to a field for a pivot table visual. us/multipleconnections_troubleshooting. I'm using a cube data source as my primary and am attempting to blend with an Excel sheet. When you try to do that, Tableau generates the "Cannot blend the secondary data source because one or more fields use an unsupported aggregation" error, turns the offending pill red, and grays out the view. functions as psf. The tff. I am trying to . To indicate a cursor with the default batch size, specify cursor: {}. if [created at] = { fixed [branch id]: max ( [created at])} Then [branch id] end. These expression operators are available to construct expressions for use in the aggregation pipeline stages. Restrictions. Amount) as Total from Company left outer Orders on Orders. I made a waffle chart grid using an excel data source that contains 3 fields: Rows, Columns and Percentage. No, the intention of the composite agg is to provide a way to systematically page through all results. But a filter or range gives org. The result now should be correct BUT it'll return the result multiple times, once for each date. "-5", "123456") and fall within the minimum and maximum value for an integer. MULTI_SOURCES_UNSUPPORTED_FOR_EXPRESSION. really need to see your twbx file to be of further help. Right-click OldPasswordAllowedPeriod, and then select Modify . The primary data source is just to filter for the invoices I want to look at. Parameters expression : Non aggregating, non grouping expression in the SELECT list. Query expressions describe a value or a computation that can be used as part of an update, create, filter, order by, annotation, or aggregate. (You need to get individual row access to evaluate DISTINCT functionality. You can also permanently remove the aggregated Ethernet interface from the device configuration by deleting it. A. That's why you can't do COUNTD on a secondary blended data source. clients. If one. Loading. To learn more about the Document type, see Documents. With NAT, VPN, security, and QuWAN SD-WAN, network management is. Tableau Desktop 2018. Table 9. ” Its important to view the data using all the . Tommy Sims (Member) 7 years ago. The following aggregation operation on the orders collection converts the order_date to date before sorting by the date value: // Define stage to add convertedDate field with the converted order_date valueWe use three kinds of cookies on our websites: required, functional, and advertising. Depending on the type of data item, applies. From the Input Recordsets pane on the left, expand the relevant Results from. api. Click on the different cookie categories to find out more about each category and. Right-click the field you are aggregating and select Properties. 2022, 15: 41: 37; This is generated by the following Code Snippet:Add GROUP BY or turn it into the window functions using OVER clauses. I am trying to set up a composite aggregation using the ElasticsearchClient since the RestHighLevelClient is deprecated. Click on the different cookie categories to find out more about each category and to change the default settings. step 2 : network person on. Unlike the other multi-bucket aggregations, you can use the composite aggregation to paginate all buckets from a multi-level aggregation efficiently. Sub-path [interactions-c] points to non single-bucket aggregation" } } ] }, "status" : 500 } this is my index mapping:DataFrameGroupBy. The one drawback is that DB2 blending does not support "non-additive aggregates" like COUNTD() and MEDIAN(). When I am joining the two data sources I wanted to use "F Name" column with "Name" column. Modified 2 years, 4 months ago. Discussions; Teams. And put both views on a dashboard. Problem in using indexes in aggregation pipeline. The one drawback is that DB2 blending does not support "non-additive aggregates" like COUNTD() and MEDIAN(). Unsupported aggregations in data blending Hello, I have a distributor dataset with product ships and returns (one report covering six months), and a retailer dataset with product retail sales and stock (covering the same six months but composed of. Cannot blend the secondary data source because one or more fields use an unsupported aggregation. Click on the different cookie categories to find out more about each category and to change the default settings. import pyspark. When double-clicked, it is automatically added to Detail on the Marks card and a map view is created. " Environment Tableau Desktop Cube Blend Resolution Verify if one of the measures coming from the cube data source has a default aggregation different than SUM, MIN, MAX, COUNT. Non-additive aggregates are aggregate functions that produce results that cannot be aggregated along a dimension. This should explain why when you are using the SUM aggregation it works. additional request properties set programmatically. I receive this error: "Cannot blend the data source because one or more fields uses an unsupported aggregation". Loading. The composite buckets are built from the combinations of the values. I get error: “Cannot blend the secondary data source because one or more fields use an unsupported aggregation. The following aggregation operation on the orders collection converts the price to a decimal: // Define stage to add convertedPrice and convertedQty fields with // the converted price and qty values. Aggregate Functions #. Jim. Self-joins (joins using the same table more than once). Connect and share knowledge within a single location that is structured and easy to search. When trying to use COUNTD() it gives this error: cannot blend secondary data source because one or more fields use an unsupported aggregation when hovering over the Measures because it is now red. In the actual data I get the error: Cannot blend the secondary data source because one or more fields use an unsupported aggregation. 1 Unable to use aggregate function in. Hello Everyone, I am unable to sum an aggregate function. A value greater than 0 treats a grade item's grades as extra credit during aggregation. search. CSS ErrorHi Ben, This comes from my own explorations and got confirmed by the Tableau dev who built the latest version of data blending (called DB2). With LAC-A functions, you can specify at what level to group the computation. So, it seems the two solutions right now are: Create two jobs that have datafeeds that search for the appropriate fields (probably the most correct option) Partition across my_filter_field and have both use the same detectors. (Ditto the FIXED countD. cpp: 16: 63) justtesting: solution1 30. The first part is the source data. Thanks, PaoloThis didn't work alas, "cannot blend secondary data source because one or more fields use an unsupported aggregation" I am using a filter from a different datasource to filter by region . Innovate fast at scale with a unified developer experienceIn blending data source, I try to slove problem but I can't. Click on the different cookie categories to find out more about each category and. When an expression outputs a boolean value, it may be used directly in filters. This function is intended to be used when timeColumn ( _time by default) is not in the group key. I only want to see the distinct count of each ID across all relationships. on Rows, Columns, Pages, or the Marks Card. I'm trying to get the total of the secondary data source field irrespective of the filters using something like this - SUM({FIXED :(SUM([Secondary Source]. ×Sorry to interrupt. I did that in your example too. If there is a GROUP BY clause specified. what I understood from my network colleague concept of LACP. Choose the type of visualization you want to create, then use the editor to configure the options. Aggregate functions in PostgreSQL are defined in terms of state values and state transition functions. ×Sorry to interrupt. The Usage property identifies the intended use for the data represented by the query item Usage property. They both share a common field (State), and that is what I'm filtering on. Right-click the field you are aggregating and select Properties. Atlas serverless instances don't support the following database commands and mongosh shell methods: Database Command. ERROR 2230: Arguments of row IN must all be row expressions. CSS ErrorOpen the Format as HTML Pro step and go to the Data tab. Isilon - Link Aggregation LACP. The MAX aggregate function is not logically necessary in this case because the international_GDP table has only one row per country; however, because the server doesn’t know that, and because the server requires that the subquery return no more than one row, the query uses the aggregate function to force the server to recognize that the subquery. If your are trying to find the minimum of your [Date] field by your [Author] field, you might want to construct a LOD calculation to find first date, by author like so: //Creates calculated field for [First Date by author] {FIXED [Author] : MIN ( [Date])} You also have asked about 'double aggregating'. The rough equivalent would be using collect_set and array_join but note you have lost the order: %sql SELECT col1, array_join(collect_set(col2), ',') j FROM tmp GROUP BY col1 I do not think STRING_AGG guarantees order (unless you specify the WITHIN GROUP. java. You can choose whether functional and advertising cookies apply. Someone in the Community told me the following: "MAX isn't supported in. node. e. Unless you include the explain option, you must specify the cursor option. I had a query w. You can choose whether functional and advertising cookies apply. The chart should display: countd. ) I need to revisit my understanding of the limitations here! I get error: “Cannot blend the secondary data source because one or more fields use an unsupported aggregation. But considering using it with Materialized View, the doc says SimpleAggregateFunction(name, types_of_arguments…) data type stores the current value of the aggregate function, and does not store its full state as AggregateFunction dose, which means. It is now possible in Amazon QuickSight. Cannot blend the secondary data source because one or more fields use. If you perform an aggregation on a baseline column through a SQL request, the Analytics Server calculates the aggregation grain at the level based on the following rules: If there is no GROUP BY clause specified, the level of aggregation is grouped by all of the nonaggregate columns in the SELECT list. ERROR 2346: Cannot alter a sequence with START. I have a User model and I want to perform generic aggregation. The following aggregation operation on the orders collection converts the order_date to date before sorting by the date value: // Define stage to add convertedDate field with the converted order_date valueHi .