Azure SQL database: how to perform calculations on the data I'm querying

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I am exporting data from my DataGrid, to a Azure Sql database table. But I need to manipulate and do some math with it.

What I'm hoping is possible to do by query, is:

- Sort data by Column1 (20 entries, with several hundred lines each)
- Add the contents of all the cells in Column 2, of Column 3 and of Column 4
- Create two new columns, X and Y
- Set the content of Column X to be (Column1 * ColumnY / 100)
- Set the content of Column Y to be a 8
- I want my table to filled with just 20 lines, the summarization of all the hundreds of line of each entry in Column1.

What I have tried:

Trying to get an idea if this is possible or not to do with a query. I would prefer not to do this "manually" in the DataGrid. Would appreciate a pointer or two in how to approach this.

Posted 6-Sep-21 23:58pm

Flidrip

Updated 7-Sep-21 6:12am

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Wendelius · Accepted Answer · 2021-09-07T06:12:00

If I understand your question correctly, you're looking for GROUP BY (Transact-SQL) - SQL Server | Microsoft Docs[^] . When grouping you can do aggregations, see Aggregate Functions (Transact-SQL) - SQL Server | Microsoft Docs[^] and you can calculate using the aggregated (or grouped) values. In the end you can use ORDER BY Clause (Transact-SQL) - SQL Server | Microsoft Docs[^] to sort the results.

Since you didn't post any example data it's impossible to give detailed answer or example.