使用sqlToCsv包的已编码CSV无法与非ASCII字符一起使用

I am using package "github.com/jeffyi/sqltocsv" to export MSSql rows to CSV files.

My problem is that special characters end up wrong way:

ü as Ć¼ ä as Ƥ etc..

I have read the sqltocsv package multiple times and I just don't get that when and where is it going wrong.

i have logged output to console, before exporting data comes out from DB as UTF-8 but on adding to CSV it gets messed up.

I have tryed to use package "encoding/csv" to convert my data to csv file. (without any success)

Here's how I use sqlToCsv package:

rows, _ := db.Query(sqlQuery)

            csvConverter := sqltocsv.New(rows)
            csvConverter.Delimiter = ';'
            csvConverter.TimeFormat = time.RFC822

            csvConverter.WriteFile(directory + "/" + fileName)

so in the end result should all characters be as they are:

ü as ü (not Ć¼ ) ä as ä (not Ƥ )