CREATE TEMPORARY TABLE __copy AS (SELECT * FROM tbl_sku LIMIT 0);

COPY __copy (col_1, col_2, col_3) FROM 'C:/Users/CB06/Downloads/upload5.csv' WITH (FORMAT csv, DELIMITER ',', FORCE_NULL (sku, title, supplier, ean), HEADER); # import from csv file

UPDATE tbl_sku SET col1 = __copy.col1, col2 = __copy.col2 FROM __copy WHERE tbl_sku.sku = __copy.sku # update rows