If the Aggregate Transformation package is secured with a password (In general, Yes), enter an appropriate password. The Aggregate transformation has encountered 4085 key combinations. do Lookup transformation to add Status back to the grouped. Also change the ExclusionGroup to 1. I would add a "Dummy Merge Key" e. Integration Services transformations provide the following functionality: Splitting, copying, and merging rowsets and performing lookup operations. . For example, you can use the Copy Column transformation to create a copy of a column and then convert the copied data to uppercase characters by using the Character Map transformation, or apply aggregations to the new column by using the Aggregate transformation. You configure the Multicast transformation by adding outputs. One can use this SSIS tutorial to update warehouses, data mining, and download or copying files. They use only the properties common to all data flow components. 0. The Data Flow Task (DFT) of SSIS uses a buffer (a chunk of memory) oriented architecture for data transfer and transformation. Designed ETL packages dealing with different data sources (SQL Server, Flat Files, and XMLs etc. The SSIS transformations are the data flow components that are used to perform aggregations, sorting, merging, modifying, joining, data cleansing, and distributing the. Add a Row Count Transform to the Data Flow. The SSIS Aggregate Transformation groups the data and applies aggregate functions on the remaining columns. PP001 ADO002 ASN003 NIC001 NX002 HNL004 ABC001 TTD004 5 13 5 8 492 2 1 5. I'm using an aggregate transformation in SSIS. Data Conversion. This browser is no longer supported. As you have correctly discerned, you cannot use the Excel Connection Manager in a Lookup. create derived integer column "StatusID" and convert statuses for each line (Completed=1, Completed/Warnings=2, Aborted=4, etc. While using Aggregator transformation, you need to check group by as the result returns each row by performing aggregation one by one and the passes to the pipeline. Once the project is created, we will see how to use an aggregate control for getting the count of the distinct rows of a particular column or a list of columns. STEP 2: Drag and drop OLE DB Source from the toolbox to the data flow region. Step 2: Bring Aggregate transformation to Data Flow Pane and then connect with Flat File Source. This video also covers. Construct SSIS expressions, including string functions, to manipulate data. Then your SSIS Aggregate can use MAX (TitleOrdinal) (which is a numeric column) as a surrogate for MAX (Title). A table or view specified in a variable. For more Transformations >> Click Here. Like add an output column to your current data flow or even create a separate data flow output. One of the workarounds is that when I simply mention the query in the 'Execute a SQL query(v2)' connector, I was able to extract data from a sql database applying aggregate functions. so i use aggregate transformations to aggregate them. Audit – It is used to add Package and Task Level Metadata – such as Machine Name, Execution Instance, Package Name, Package ID, etc. It compares source data with. STEP 1: Drag and drop the data flow task from the the toolbox to the control flow region. Sorting and aggregating in an SSIS dataflow is always. Enroll for Free "SSIS Training" Demo! Data Flow in SSIS. Audit Transformation: Enables the data flow in a package to include data about the. The most common examples are the Sort and Aggregate Transformations. STEP 2: Drag and drop OLE DB Source from the toolbox to the data flow region. Group by Item Number and Item Name and then perform an aggregate operation on Update Date. Columns of any data type can be used for grouping. Step 2: Select the Aggregator transformation, enter the name, and click create. Aggregates Question 11. You actually have to choose what columns you want included in your script component as either read only or read/write. dtsx in the project and rename it (e. Updating column values and creating new columns by applying. In Integration Services scripting and programming, you specify an asynchronous transformation by assigning a value of 0 to the SynchronousInputID property of the component's outputs. Finally we can see the List of SSIS-2012 Transformations alphabetically as below: SSIS Aggregate Transformation. 100% practical-oriented classes. Hi, I'm doing a group by in an aggregate transformation. Talend is an open-source ETL data integration tool compatible with both on-premises and cloud sources. Double Click on the OLE DB Component and Select SQL Command to write customized sql. Aggregator transformation. SalesOrderDetail table. SqlServer. variable sampling thing to assign 1 row into our Variable (or use a Script Component, which is what I'd do). Go to the Inputs and Outputs tab and change the name of the Output port from "Output 0" to "Unique". CustomerId = Aggregate Transform. Based on the logic you mentioned above, the Minimum operation should work. The semi-blocking transformation we just implemented runs in 17 seconds on average, in my test system, and uses 50 MB. STEP 2: Drag two OLE DB Sources to the. You can also calculate the sum or average of numeric data. When working in the SSIS data flow, you’ll notice that many sources and transformations and some destinations have a built-in output to handle errors. Aggregate functions are used to do a list of needed activities like Sum, Average, and Group by etc. Sorted by: 7. Then if more dataflow processing is needed, start a new dataflow with that table as the source. This video walks you through aggregate transformation in SSIS. Instead we use Script transform component for the same purpose. Ana içeriğe atla. Code:Aggregate Transform Aggregate Transformation. For a university group project, we are building a data warehouse using SQL Server Management and Visual Studio. Later in the data flow, different transformations can be applied to the column copies. Applies to: SQL Server SSIS Integration Runtime in Azure Data Factory. The Sort Task sorts the data based on the selected columns and based on these values determines which records are duplicates. LEN (COLUMN) Now add a Multicast transformation. 3/Drag Row Count in the Data Flow Transformations list. "deptno=10 ". Column Chart. 3. Dts. Transformations available in SSIS: Aggregate – It is used to apply aggregate functions to Record Sets to produce new output records from aggregated values. String functions can be applied using this transformation like upper case, lower case, byte reversal and so on. To get the actual MAX (Title), you'd have to join the original dataset to this aggregated set, on Price=Price,Number=Number,TitleOrdinal= [MAX (TitleOrdinal) from aggregated set]. The difference between the SSIS Merge Join and the Merge transformation is like the difference between the UNION and JOIN operators in SQL Server. The test package can then run more quickly because it uses a small, but. This tutorial explains the use of Aggregate transformation in SSIS. Edit the Data Flow task by double clicking the object or by selecting EDIT button on Right click on the. Ovaj pregledač više nije podržan. In Integration Services scripting and programming, you specify an asynchronous transformation by assigning a value of 0 to the SynchronousInputID property of the component's outputs. Next, if you want to create this Derived column as a new column then select Derived column as <add as new column> which is set by default. If you open the text file in Excel the double quotes are automatically stripped, so what needs to be done in SSIS to accomplish this. Aggregate Transformation Integration Services Transformations Integration Services Paths. Find the MAX date and then use the. Once the project is created, we will see how to use an. The Aggregate transformation is used to perform aggregate operations/functions on groups in a dataset. Package Aggregate. Step 2: Bring Script Component from SSIS Toolbox to Data Flow Pane. Derived Column Name: Provide any unique name. It has two modes * Basic: It returns a single output. When you finish this delete this empty excel. The Aggregate transformation has encountered 25797 key combinations. Aggregator transformation. 2 Answers. Double click on the data flow task will open the data flow tab. Here's how I created an example of this: Drag a Data Flow Task onto the design surface. Utilize mathematical functions and data conversion transformations for ETL processes. Wrapper. SSIS Character Map Transformation. It moves the data to an appropriate destination depending upon the condition. Friends, In this post we are gonna discuss about Character Map Transformation in SSIS 2008R2 with Example. In the aggregate transformation I've specified a group by operation for a DT_WSTR code and a count distinct for the same code. Therefore, increasing DefaultBufferSize will increase the memory space to execute Full Block Transformations. This section describes the transformations that Integration Services includes and explains how they work. Aggregate Transformation. Introduction: In this article we are going to see on. Transformations can also perform lookup operations and generate sample datasets. STEP 1: Drag and drop the data flow task from the SSIS toolbox to control flow and rename it Multicast Transformation. SSIS Slowly Changing Dimension Type 2 (SCD 2): If you want to maintain the historical data of a column, then mark them as Historical attributes. STEP 1: Open BIDS and Drag and drop the data flow task from the toolbox to control flow and rename it as PIVOT Transformation in SSIS 2014. It has to re-hash data because the number of key combinations is more than expected. Integration Services Transformations: Are the components in the data flow of a package that aggregates, merges, distributes and modifies data. Once connection is created use Flat file Source as your source. This transformation unions two datasets/tables. . During this process, you have to wait for the transformation to collect entire required rows before getting output/desired result. [Group] FROM [Sales]. The Aggregate transformation is used to perform aggregate operations/functions on groups in a dataset. I am curious to know , which one of the ssis transform work as filter transformation in INformatica. See Also. STEP 1: Drag and drop the Data Flow Task from the toolbox to control flow region. dtsx. It has to re-hash data because the number of key combinations is more than expected. Example We have a Table in SQL Server Database which stores Employees Salary. Sort Transformation in SSIS Example. In fact out of 6000+ rows I. The fuzzy lookup configuration is very similar to the SSIS lookup transformation. This transformation performs a function similar to the SQL Server Aggregate functions. 8. Then I link it to a SQL Server Destination and configure the mappings. You can simply use the Aggregate Transformation to get Row count, but make sure that the Source is sorted: Aggregate Transformation in SSIS Basic Mode; SQL Server Integration Services (SSIS) - Aggregate (COUNT) Transformations Control in SSIS; Share. This is part 33 of the series of article on SSIS. Answer (Detailed Solution Below) Option 4 : All the options are correct. เบราว์เซอร์นี้ไม่ได้รับการ. We selected Sum as we want to find out the TotalSaleAmount by CountryName. "Unsyncronized" would probably be a better word. I agree that the AGGREGATE should allow min/max on string fields but my justification for that is because it is something useful for ETL developers, not because some other development platform supports it. But i need to accomplish it without using a script task. STEP 2: Drag and drop OLE DB Source from the toolbox to the data flow region. Drag an Aggregate Transformation onto the Data Flow workspace. Figure 14 – Selecting the reference data set. </p> </li> <li> <p dir="auto">At the column level, you specify the following. The Aggregate transformation supports the. Now add path, connect Flat file source arrow to row count. According to tutorial from first step, click on Excel Connection Manager -> Properties -> Expressions. In this Derived Column transformation, I use the column from SourceB - the aggregate count of SourceA. SQL Server Integration Services. The blocking sort transformation that comes with SSIS takes 24 seconds to run and uses up to 2. In the General tab, we can change the Name and description. However, it can be increased upto. SSIS Transformations Description; Aggregate Transformation: This SSIS transformation performs the aggregations such as SUM, MIN, AVG, etc: Sort Transformation: It is used to sort the data source in either Ascending or Descending order. We will group by the ‘Name_Cleaned’ column (which is now unique per group) and. 5 GB memory, but it gets released as the sort transformation starts to yield its output. This tells the data flow. . We are currently in the staging area and want to fill the tables with data. Building enterprise-level data integration and data transformation solutions can be done using SQL Server Integration Services. The Aggregator transformation performs aggregate calculations, such as averages and sums. STEP 2: Drag and drop OLE DB Source, Percentage Sampling Transformation from the toolbox. an integer with a fixed value of 1 to both data flow paths (from Table1 and from AggregateTable). Besides aggregate functions, the transformation provides the GROUP BY clause, which you can use to specify groups to aggregate across. Includes resources/materials. It is unable to filter some conditions like. In SQL Server Data Tools (SSDT), open the Integration Services project that contains the. Can aggregate only return integer values??? Jason · Thank you for replying gentlemen, but i have figured out. The Aggregate transformation includes the Keys, KeysScale, CountDistinctKeys, and CountDistinctScale properties. Once you double click on Flat file Source component, a Flat File Source Editor window opens. Aggregator transformation is an active transformation used to perform calculations such as sums, averages, counts on groups of data. Example We have a Table in SQL Server Database which stores Employees Salary. create derived integer column "StatusID" and convert statuses for each line (Completed=1, Completed/Warnings=2, Aborted=4, etc. What are the different types of Transformations you have worked? AGGEGATE: The Aggregate transformation applies aggregate functions to column values and copies the results to the transformation output. By default, CLR integration in. 1. Time will be ignored and discarded in this stream. Step 4 – Drag and drop SAL & DEPTNO columns from source qualifier (SQ_EMP) to the aggregator transformation. In this tutorial, we will learn How to remove duplicate records from a file by using Sort Transformation in your SSIS package. The following transformations have no custom properties at the component, input, or output levels: Merge Transformation, Multicast Transformation, and Union All Transformation. LookUp is very useful transformation SSIS component it performs lookup operation by connecting input value with data-table or table dataset columns. This is where it bring degradation in the Data Flow performance, and in turn, slow package. This is very much similar to Percentage Sampling with only difference that Row sampling will Limit records by the integer value we passed where as Percentage Sampling takes the %ge of records. To follow my series of articles on SSIS packages refer to my profile. Both of them uses Aggregate function but SSIS contains few aggregate functions only. Union All Transformation Editor. SQL Server BI Developer, 05/2016 - 08/2017 Bank Of West – City, STATE, . Sign in to vote. You can use this transformation to perform the following tasks: Concatenate data from different columns into a derived column. Right-click on Data Flow Task and rename it to SSIS LOOKUP TRANSFORMATION. CustomerId = Aggregate Transform. It has to re-hash data because the number of key combinations is more than expected. The Derived Column transformation can define multiple derived columns, and any variable or input columns can appear in multiple expressions. You can create a linked server that uses the OLE DB Provider for SSIS and then run. Optionally, you can include other clauses, such as WHERE, that specify additional selection or sorting criteria. Double click on the OLE DB source in the data flow region will open. Open SQL Server Data Tools and create a new integration project. I am not clear about your requirement, but what you wrote may be achieved with Aggregate (count of the records with status==c). Nadogradite na Microsoft Edge biste iskoristili najnovije funkcije, bezbednosne ispravke i tehničku podršku. Expand the Columns folde r, select CustomerName column and drag it into row column Derived Column Name as shown below. 4. Data Conversion: Allows you. After the Conditional Split you should plug an Aggregate transformation to sum up "Amount". SQL Server Integration Services transformations are the components in the data flow of a package that aggregate, merge, distribute, and modify data. If i convert the. Hi, I've implemented a SSIS 2017 package having a merge transformation and an aggregate transformation. If you use the Aggregate transformation, SSIS will read all of the data in memory before it starts outputting any data. How to transpose a table into a column in SQL? Any help will be much. Right click on SSIS Packages folder then select New SSIS package. En son özelliklerden, güvenlik güncelleştirmelerinden ve teknik destekten faydalanmak için Microsoft Edge’e yükseltin. Note that these operations are async, meaning all rows must enter this task before they continue, as opposed to sync tasks that just eats and spits. Next, rename it as the SSIS Script Component as Destination. SSIS Destinations helps to transfer data from source or transformation to a wide range of destinations. , on to a transformation output. To understand in. We can alias the input columns also. You can see a data viewer symbol on the connection line. If you use the Aggregate transformation, SSIS will read all of the data in memory before it starts outputting any data. Please sign in to rate this. You will find [Lookup Transformation]. Drag a Data Flow Task from the SSIS toolbox to the Control Flow. ข้ามไปยังเนื้อหาหลัก. We will first create an OLE DB Connection to fetch the data. Aggregate Transformation: Does the aggregate functions, for example: Average. Aggregate Transformation. SQL Server Integration Services transformations are the components in the data flow of a package that aggregate, merge, distribute, and modify data. Double-click it to switch to it. The Aggregate Transformation allows you to compute values based on an entire set of data. for two weeks data, it has to aggregate 15millions of rows. Operation Description; Group by: Divides datasets into groups. SSIS Tutorial Part 72- What is Conditional Split Transformation in SSIS (Quick Demo) YouTube. SSIS offers a wide range of built-in transformations and tasks that allow you to manipulate and modify your data. The first will "SQL Derive MAX date". In the merge join transformation as join Keys I've specified the code from the aggregate transformation, on the right. Integration Services Transformations. · It seems that adding a sort. 2. Download Solution PDF. Can aggregate only return integer values??? Jason · Thank you for replying gentlemen, but i have figured out. For enrolling and enquiries, please cont. Manage data transformation using different components in the Data Flow section. You can say that it creates copies of the source inputs. moreThe following diagram shows a simple data flow that has a source, two transformations, and a destination. In an ETL project with SSIS, it is common to aggregate data with SSIS, from a SQL Server table to a higher level, such as data marts. It can be used in scenarios where we have to group, sum or count the data, for example aggregate transformation can be used to sum the total monthly sales made by employees. dtsx) with two Data Flow Tasks (Using the Aggregate Transform and Using a Script Component). · It was the length of the state column. Go to the Aggregates tab. You can use this transformation to perform the following tasks: Concatenate data from different columns into a derived column. The Aggregator transformation behaves like the Expression transformation except you can configure the Aggregator transformation. Step 4 – Drag and drop SAL & DEPTNO columns from source qualifier (SQ_EMP) to the aggregator transformation. Now click on OK button, you can see a connection manager is created under folder Connection Managers. Right-click on Data Flow Task and rename it to SSIS LOOKUP TRANSFORMATION. Double click on it will open the data flow tab. Here we will see on the Maximum operation in the aggregate control. This tutorial explains the main cause of the performance problem faced while merging different data sources in SQL Server Integration Services and provides a few alternatives. -JamieOnly idea so far is to: create lookup table for mapping StatusID to Status. The most common destinations are OLE DB Destination, Flat File, and Excel. Scatter Plot 4. If you need to perform different aggregations (each of which is associated with a separate destination) but you can’t perform the aggregations in the source query, you can create a separate Aggregate transformation for each destination rather than create multiple outputs for the transformation. SSIS Cache Transform Transformation. Whether you need to clean, aggregate, or merge data, SSIS provides the flexibility to perform these transformations effortlessly. In this article we are going to see how to use an Aggregate data flow transformation control in SSIS packaging. Once Script Component will be placed, A window will automatically open for you to choose either you want to use Script Component as Source, Destination or. The flexible, extensible, scalable, high-performance platform and toolset in SSIS caters to enterprise demands for traditional data extract-transform-load (ETL) processes as well as. am i doing something wrong? · It's quite possible that there may be trailing spaces that aren't apparent in data viewers that are causing the Aggregate. In Solution. Its taking in a decimal value, doing a sum, but its spitting out a rounded int value. The first option for this is to use a Script Transformation connected to your Aggregate Transformation. You can use an Aggregator transformation to remove duplicate rows. The process for designing SQL Server Integration Services (SSIS). Double click on the data flow task will open the data flow tab. Responsible for Scheduling Jobs, Alerting and Maintaining SSIS packages through Active Batch Job. Now connect back the output of the Aggregate transform to Output2 use a Merge Join in the mapping map Output2. Data Type: This column is read-only and it. The Derived Columns Grid contains the following configurations: Derived Column Name: Specify the derived column name. From drop-down select Result sheet name. Using this transformation, you can insert, delete, retrieve, and update rows from the database. Hi, I have an SSIS Aggregate transformation. SSIS is an enterprise scale ETL (Extraction, Transformation and Load) tool which allows you to develop data integration and workflow solutions. Add Dataset. Let us Run the Package and see whether we successfully called the package present in the SQL Server using Execute Package Task or not. Add a new port in the transformation. Transformation Custom Properties. The Aggregate transformation is used to perform aggregate ope. You can do it in SSIS by using a Conditional Split transformation after the excel source and select only the rows where Pet=="Cat". Here we will see the Group By operation in the. Aggregate Transformation is used in Data Flow Task to aggregate the data like Sum, Max, Min, Avg etc. Here "Asyncronous" means that the transform doesn't output rows for each input row. Score. 3. Drag the SSIS Conditional Split task from the SSIS Toolbox. The component can be configured to avoid data re-hash by adjusting the Keys, KeyScale, and AutoExtendFactor properties. A new path will lead to an Aggregate transformation. Aggregator Transformation Advanced Properties. Add the variable to the Read/Write variables property. The first will populate the cache connection manager and should be where the aggregate takes place. ” Step 4: Check the box next to “Microsoft Power Pivot for Excel. The aggregate functions available are-. 13 hours of SSIS Training In Hyderabad videos. Insert ProductionTable Select date, type, AVG (Seconds) avgSeconds, Vount (*) totalRows From StagingTable Group By date, type. In the aggregate transformation I've specified a group by operation for a DT_WSTR code and a count distinct for the same code. 10/2021 to Current. You can configure the Merge Join transformation in the following ways: • Specify the join as FULL, LEFT, or INNER join. SQL Dataset. Score and Output2. Double-click on it will open the. Users can see information statistics to the AGGREGATE component via Multicast in parallel while extracting data from the source to the dest1 table and saving to the dest2table if we save the package and conduct this. On the properties Tab, Go to Expressions. Aggregation of data can be solved with the Aggregate transformation in SSIS. Let’s take a quick deep dive with some important SSIS transformations under both categories, Synchronous and Asynchronous, which can be useful to manage and transform data during ETL execution. By including the Union All transformation in a data flow, you can merge data from multiple data flows, create complex datasets by nesting Union All transformations, and re-merge rows after you. Don't use a complicated SSIS solution for something that is a simple SQL statement. Here we will see on the Maximum operation in the aggregate control. That is, in practice, to calculate the sum of amounts for a given business level. Zip or Compress Files according to the Name of Files in SSIS Package. Transformations can also perform lookup operations, and generate sample datasets. Your data flow has the Unpivot transformation on it which is the correct transformation to apply. How to use Aggregate Transformation in SSIS Package with Group By and Sum Operation. In Solution Explorer, double-click the package to open it. Once you click on OK button, you will see a Connection Manager that you created is displayed in Data Connections. เบราว์เซอร์นี้ไม่ได้รับการสนับสนุนอีกต่อไป. An example is the Aggregate transformation, where the component has to add a row to the output to hold the computed aggregate values. Answers text/html 10/16/2009 2:42:14 PM Phil Brammer 0. STEP 1: Drag and drop the data flow task from the SSIS toolbox to control flow and rename it Multicast Transformation. Merge sort is an option, but if you really want to use Excel as a source for the SSIS Lookup task, you can do it. Pipeline. Configure an Aggregator transformation to perform aggregate calculations, such as averages and sums, against groups of data. If data viewer is placed before and after the Aggregate transform, we can see data flowing to the transformation at the runtime and how it looks like after the transformation occurred. The Pivot and Aggregate transformations are asynchronous components. Note that you can use this Aggregator instead of t-sql if you're. STEP 7: Double click on SSIS Merge Transformation and configure it. caw extension). Business MySQL SQL Data Analysis Data Science SSIS Business Analytics Hands-on Class Project In the Class Project,You're required to extract data from three different sources like one file should an excel file and other ones should be CSV and Database table. STEP 1: Drag and drop the data flow task from the toolbox and rename it as Percentage Sampling Transformation. It has two modes* Basic: It returns a single outp. If the data is retrieved from a data source like…SQL transformation in Informatica is a Connected transformation used to write or use SQL queries in the middle of the transformation. The Slowly Changing Dimension transformation provides the following functionality for managing slowly changing dimensions: Matching incoming rows with rows in the lookup table to identify new and existing rows. You could use the Aggregate Task within the data flow. เบราว์เซอร์นี้ไม่ได้รับการสนับสนุนอีกต่อไป. Aggregate transformations are similar to SQL aggregate select queries. There are a couple of approaches you can take to do this. Sorted Input for an Aggregator Transformation. As my column names in Testfile1 and. Select Columns and Operation as shown below to get TotalSaleAmount by CountryName. Switch to Control Flow and add an Execute SQL Task from SSIS Toolbox as follows: Rename it to SQL Reset Target Table 1 and configure the task in the following way: Put the SQL Statement into the task: Truncate TABLE dbo. SSIS Package Design-Time Considerations. For more Transformations >> Click Here. In SSIS Package make connection to your flat file. Drag and drop a Multicast Transformation Task on the Data Flow tab. Inside the SSIS Package, Bring the Data Flow Task to Control Flow Pane. SSIS Conditional Split Transformation. Aggregate Transformation. Next, please double click on the Data Conversion Transformation to edit and convert our source columns data type to the required data type with length. Mathematical operations with advanced logic. You might have seen the properties “Keys Scale” and “Number of Keys” in SSIS Aggregate transformation. The Aggregate transformation is used to perform aggregate operations/functions on groups in a dataset. you have to use the above option in OLEDB source. The Aggregate transformation has encountered 2000037 key combinations. Aggregate Transformation. I run the data flow and everything works. Aggregate (Group by) data flow transformation control in SSIS. Please note that this example uses a Sort and Aggregate Transformation. Aggregate Transformation. The transformation contains a nested aggregate function. Aggregate Transformation- Multiple aggregate at a single timeFind Us On YouTube- "Subscribe Channel to watch Database related videos" Server Integration Services. CustomerId = Aggregate Transform. This tells the. The Aggregate transformation has encountered 25797. Based on the logic you mentioned above, the Minimum operation should work. It runs on the Java platform and utilizes Java for advanced scripting components. A table or view specified in a variable. In this tutorial, you will learn about Aggregate Transformation in SSIS with an Example. SSIS Multicast Task Addition. Applies to:. Connect the Source to the Lookup to the Destination. 1. i started to. OLE DB Source POs) and change the SQL command text using the above query. The Lookup transformation performs lookups by joining data in input columns from a connected data source with columns in the reference database. Once the project is created, we will see how to use an aggregate control for grouping the columns. Let’s name it “ aggregate-transformation “. The Aggregate Transformation is a fully blocking transformation, which is to say it needs to pull the entire data set into memory, perform the SELECT DISTINCT in memory, and then allow the refined data set to pass into the destination, resulting in two full copies of the data in memory. In the merge join transformation as join Keys I've specified the. CustomerId = Aggregate Transform. It doesn't sort, just groups by or sums, averages, etc, which from your comments is what you're looking for.