Hi Andrej,
You need to concatenate the multi columns in one field as following (tested with MSSQL):
"select field1 + ',' + field2 + ',' + ... + ',' + fieldN from <dbname> where <some filter>".
e.g.:
SELECT [loginid] + ',' + [lastname] + ',' + [firstname] + ',' + CAST ([org] as nvarchar) + CAST ([startdate] as nvarchar)
FROM [Issues].[dbo].[tblUsers] WHERE [id] = '1';
With this sample [org] is INT and [startdate] is DATETIME, so they needed to be "casted" to make this concatenation possible.
You need to adapt if the SQL engine is not MS SQL server.
Regards,
Philippe.