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How do I merge joins in SSIS?
You can configure the Merge Join transformation in the following ways:
- Specify the join is a FULL, LEFT, or INNER join.
- Specify the columns the join uses.
- Specify whether the transformation handles null values as equal to other nulls.
When to Use merge and Merge join in SSIS?
We can use Merge Join based on specific condition like combining data on matching keys with that Inner, Left and full. Merge Join component accepts only 2 sorted (compulsory) inputs and one output and one error output. Unlike Merge, Merge Join combines data depending on matching keys or string name.
What is difference between lookup and Merge join in SSIS?
Lookup and Merge join these two components in SSIS used for the joining between the two Tables. But there is major difference. Lookup is used for comparing the data between two tables. But it will return the only first row of the matched rows.
What is full outer join in SSIS?
The Full Outer Join in SSIS is similar to SQL Full join, which returns all the records present in both the Left table and the right table. All the Unmatched rows will fill with NULL Values. In this article, we are going to perform Full Outer Join in SSIS Merge Join Transformation.
What is the use of MERGE JOIN in SSIS?
SSIS merge Join is one of the component of SSIS, available in toolbox. The Merge Join Transformation in SSIS is used to perform SQL Joins such as Inner Join, Left Outer Join, Full Outer Join, and Right Outer Join in SQL Server Integration Services. The Merge Join Transformation in SSIS will only work with Sorted data.
What is the use of merge join in SSIS?
How to troubleshoot merge join with SSIs database administrators?
To troubleshoot I have performed the following: I exported both sorted data sets into my local SQL Server, and wrote an inner join manually. This confirmed that I should be receiving 720 rows as a result of the inner join between the two data sets.
How to view merge join in SSIs multicast?
To view data, right-click on the connection line between both Merge Join and SSIS Multicast and click on Enable Data Viewer. You can see a data viewer symbol on the connection line. Let’s execute the SSIS package now and view the results. Here, we see the expected result of the INNER JOIN of both flat files.
How is the merge join transformation used in SQL Server?
In a relational database, we use different normalizations to split data across multiple tables. Later, if we need to retrieve data together, we used multiple kinds of JOINS operator in SQL Server. These tables combine using a shared key or join key. For example, we can use the [EmpID] column to join tables related to employees.
Where do I find data viewer in merge join?
To view data, right-click on the connection line between both Merge Join and SSIS Multicast and click on Enable Data Viewer. You can see a data viewer symbol on the connection line. Let’s execute the SSIS package now and view the results.