in code-bugfixing/etl-processing/C#/VisualStudio/etlprocessing/CsvEtlCommand.cs [32:42]
private string Transform(string[] columns)
{
// Add a simple transformation: reverse the order of the columns
string transformed = "";
for (int i = columns.Length - 1; i >= 0; i--)
{
transformed += columns[i];
if (i > 0) transformed += ",";
}
return transformed;
}