sql = "SELECT A.[year],A.id_oper_unit,A.id_department,A.io,A.id_position,"+
"SUM(A.head_count) AS hc,SUM (A.month1)AS month1,SUM(A.month2) AS month2,"+
"SUM(A.month3) AS month3,SUM(A.month4) AS month4,SUM(A.month5) AS month5,"+
"SUM(A.month6) AS month6,SUM(A.month7) AS month7,SUM(A.month8) AS month8,"+
"SUM(A.month9) AS month9,SUM(A.month10) AS month10,SUM(A.month11) AS month11,"+
"SUM(A.month12) AS month12 "+
"FROM Manpower_Temp A "+
"GROUP BY A.[year],A.id_oper_unit,A.id_department,A.io,A.id_position";