Analytics in Action

Using Aggregate & Data Conversion Transformations in SSIS

In this post I demonstrate the Aggregate and Data Conversion Transformations in SQL Server Integration Services (SSIS). Aggregate functions summarize data – such as averaging or summing. The actual aggregate function available will depend on the data type of field that the transformation is being applied against. For example an average function is not available for data stored in a text data types, but it is for numeric data types. All logical stuff, however data is sometimes stored in an incorrect format and requires a Data Conversion transformation to be applied before an appropriate aggregate transformation can be applied. In this example we calculate an average monthly spend for customer data that is stored in text format.

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One Response to “Using Aggregate & Data Conversion Transformations in SSIS”

  1. [...] transformation. So if you want to aggregate data in a pivot in SSIS you also need to first add a Aggregate transformation. Unfortunately the pivot transformation is one of the most difficult SSIS transformations to use [...]

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