SQLException : 
	ErrorCode = 22018
	SQLState = 22018
	Message = Data conversion error converting ; SQL statement:
select "customers".country AS "customers_country", "products".productline AS "products_line", "timeline".day_nb AS "timeline_day_nb", SUM("orderfact".totalprice) AS "orderfact_totalprice" from PUBLIC.customers "customers", PUBLIC.orderfact "orderfact", PUBLIC.products "products", PUBLIC.timeline "timeline" where "orderfact".customernumber="customers".customernumber AND "orderfact".productcode="products".productcode AND "orderfact".time_id="timeline".id AND "timeline".year_nb='' AND "timeline".month_nb='' AND  ("timeline".id <= NOW()) group by "customers".country, "products".productline, "timeline".day_nb order by "customers_country", "products_line", "orderfact_totalprice", "timeline_day_nb" [22018-182]