Group by errors in C#

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Hello, Guys am working on c# and am facing an issue. "Additional information: Your query does not include the specified expression 'Item Name' as part of an aggregate function."
I don't know and I have tried many things but this error still there please help and tell me what is this and how can I resolve it
Thanks to Advance

What I have tried:

C#

"    con_string.ConnectionString = @"Provider = Microsoft.ACE.OLEDB.12.0;Data Source =|DataDirectory|\Restaurant.accdb;Persist Security Info=False";
                            DataSet dsa = new DataSet();
                            DataTable dt = new DataTable();
                            dsa.Tables.Add(dt);
                            OleDbDataAdapter da = new OleDbDataAdapter();
                            da = new OleDbDataAdapter("SELECT sum(Column1) As [Item Price],[column2]As [Item Name],[column3]As [Table Name],[Flavours],[Customer Name],[Delivery Time],[Time] FROM Runtime Group by [column3]", con_string);
                            da.Fill(dt);
                            dataGridVaiew2.DataSource = dt;
                            con_string.Close();"

Posted 10-Nov-17 11:20am

Member 9983063

Updated 10-Nov-17 19:50pm

Karthik_Mahalingam

v2

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OriginalGriff · Answer 1 · 2017-11-10T19:33:00

Solution 2

See here: SQL GROUP By and the "Column 'name' is invalid in the select list because..." error[^]

Posted 10-Nov-17 19:33pm

OriginalGriff

Suvendu Shekhar Giri · Answer 2 · 2017-11-10T15:10:00

You need to include the list of columns in the GROUP BY clause which are available in the SELECT list and doesn't associated with an aggregate function.
Your query should look like-

SQL

SELECT sum(Column1) As [Item Price],[column2]As [Item Name],[column3]As [Table Name],[Flavours],[Customer Name],[Delivery Time],[Time] FROM Runtime Group by [column3],[column2],[Flavours],[Customer Name],[Delivery Time],[Time]

But the result you will get probably is not what you expected. You need to include only those columns which are essentially needed.

Please let me know with a sample output in that case so that I can help further.

Thanks :)