I have a file saved as Unicode text containing Ukrainian characters, and it got loaded successfully to staging table using SSIS.
Like this:
\"Колодки
Here you can see the deference between VARCHAR and NVARCHAR datatypes:
DECLARE @Non_Unicode_Var VARCHAR (MAX) = 'Колодки тормозные дисковые, комплект';
DECLARE @Unicode_Var NVARCHAR (MAX) = N'Колодки тормозные дисковые, комплект';
SELECT @Non_Unicode_Var AS NonUnicodeColumn, @Unicode_Var AS UnicodeColumn;
Result:
+--------------------------------------+--------------------------------------+
| NonUnicodeColumn | UnicodeColumn |
+--------------------------------------+--------------------------------------+
| ??????? ????????? ????????, ???????? | Колодки тормозные дисковые, комплект |
+--------------------------------------+--------------------------------------+
So, you need to change the data type to NVARCHAR data type, then insert your data into the table.