#009 Find the sum of sales grouped by date and product

This T-SQL code performs a query on the "f.Combustibleis" table. I'll explain each part

1. PRODUCT], SUM([VALOR_VENDA]) THE SalesDay

   :
   • SELECT: Indicates that the next part of the code will specify which columns will be returned in the query.
   • [DATE], [PRODUCT]: These are the columns that will be selected in the query.
   SUM(
   • [VALOR_VENDA]) THE SalesDay: Calculates the sum (SUM) of the "VALOR_VENDA" column for each unique combination of values in the "DATE" and "PRODUCT" columns. The result of this sum is renamed to "SalesDay" for easy reference in the query.
FROM

2. f.Fuels

   :
   • FROM: Indicates the table from which the data will be selected.
   • f.Fuels: This is the name of the table from which the data will be extracted. The prefix "f." suggests that the table is in a schema called "f".
GROUP BY [

3. DATA], [PRODUCT]:GROUP BY

   • : Groups the results based on the specified columns, in this case, "DATE" and "PRODUCT". This means that the sum will be calculated for each distinct combination of values in these columns.

Therefore, the code returns the sum of fuel sales grouped by date and product. The results include three columns: "DATE", "PRODUCT", and "SalesDay" (the sum of sales for each unique combination of date and product). This query is useful when you want to analyze aggregate product sales on different dates.