Explanation

Power Query acts as a powerful transformation layer between SQL data and Excel.

Workflow

SQL Database

      ↓

Power Query

      ↓

Filter

      ↓

Clean

      ↓

Transform

      ↓

Load to Excel

Example SQL Query

SELECT

    OrderID,

    Date,

    CustomerID,

    ProductID,

    SalesAmount

FROM Sales

WHERE SalesAmount > 10000;

The database can perform filtering, while Power Query can perform additional transformations.

Power Query Tasks

  • Rename columns
  • Change data types
  • Remove duplicates
  • Merge tables
  • Append data
  • Create calculated columns
  • Filter rows
  • Group data

Practice

Create a query that imports SQL sales data and produces a clean reporting table.

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