SQL Sales Query Analysis

Below is the breakdowns of the query:

SELECT TOP(10) PERCENT: This specifies that we want to select the top 10 percent of the resulting rows from the query. It means we want to retrieve only a certain percentage of rows from the final result set.

SalesOrderNumber AS InvoiceNumber: This renames the "SalesOrderNumber" column as "InvoiceNumber" in the result set.

OrderDate: This includes the "OrderDate" column as it is in the result set.

SUM(SalesAmount) AS InvoiceSubTotal: This calculates the sum of the "SalesAmount" column for each group and renames it as "InvoiceSubTotal" in the result set.

SUM(TaxAmt) AS TaxAmount: This calculates the sum of the "TaxAmt" column for each group and renames it as "TaxAmount" in the result set.

SUM(OrderQuantity) AS TotalQuantity: This calculates the sum of the "OrderQuantity" column for each group and renames it as "TotalQuantity" in the result set.

SUM(SalesAmount) + SUM(TaxAmt) AS InvoiceTotal: This calculates the sum of the "SalesAmount" and "TaxAmt" columns for each group and renames it as "InvoiceTotal" in the result set.

FROM FactInternetSales: This specifies that the data should be retrieved from the "FactInternetSales" table.

WHERE SalesTerritoryKey = 6: This filters the rows to only include those where the "SalesTerritoryKey" column has a value of 6.

GROUP BY SalesOrderNumber, OrderDate: This groups the rows by the "SalesOrderNumber" and "OrderDate" columns. This means that the aggregation functions (SUM) will be calculated for each unique combination of these columns.

HAVING SUM(SalesAmount) > 1000: This filters the groups to only include those where the sum of the "SalesAmount" column is greater than 1000. This condition is applied after the grouping.

ORDER BY InvoiceSubTotal DESC: This specifies that the result set should be ordered in descending order based on the "InvoiceSubTotal" column. The highest values will appear first in the result set.

In summary, this query retrieves the top 10 percent of rows from the "FactInternetSales" table where the "SalesTerritoryKey" is 6. It groups the rows by "SalesOrderNumber" and "OrderDate", calculates various aggregations (sums) on selected columns, and includes only the groups where the sum of "SalesAmount" is greater than 1000. The final result set is ordered in descending order based on the "InvoiceSubTotal" column.