Translation of Removeduplicate to DAX

Code Snippet Analysis

The provided code snippet aims to remove duplicate entries from a dataset. The logic generally involves identifying unique records based on specified columns and preserving the first occurrence of each unique record while discarding any duplicates.

DAX Translation

To replicate this behavior in DAX, we can use the SUMMARIZE or DISTINCT function, depending on whether we want to aggregate or simply list unique values. Below are two examples based on common scenarios:

Example 1: Using DISTINCT

UniqueRecords = DISTINCT(TableName)

Example 2: Using SUMMARIZE

If you need to keep specific columns and aggregate other values, you can use the SUMMARIZE function:

UniqueRecords = 
SUMMARIZE(
    TableName,
    TableName[Column1],
    TableName[Column2],
    "AggregatedValue", SUM(TableName[ValueColumn])  // Replace with desired aggregation
)

Explanation of DAX Functions

1. DISTINCT:

   • Returns a one-column table that contains the distinct values from the specified column of a table.
   • Suitable for retrieving unique records without any aggregation.

2. SUMMARIZE:

   • Groups rows that share the same values in the specified columns.
   • Allows for aggregation of additional columns, which is beneficial if you want to compute sums, counts, etc.

Conclusion

The above DAX snippets maintain the functionality to remove duplicates as per the underlying logic of your original code. Choose DISTINCT for a straightforward removal of duplicates or SUMMARIZE for a more complex case where columns need to be aggregated.