update date table keys

loading.py

@@ -307,7 +307,7 @@ def createTableQueryPartitionningByDate(table):
 			peak_wind_drct    	decimal,
 			peak_wind_time    	decimal,
 			metar             	varchar,
-			PRIMARY KEY((year), month, day, hour, minute, station)
+			PRIMARY KEY((year, month), day, station, hour, minute)
 		)"""
 	return query