$PBExportHeader$f_rst_dept_bbala.srf
global type f_rst_dept_bbala from function_object
end type

forward prototypes
global function decimal f_rst_dept_bbala (long arg_accsetid, long arg_cmonth, string arg_subid, long arg_deptid)
end prototypes

global function decimal f_rst_dept_bbala (long arg_accsetid, long arg_cmonth, string arg_subid, long arg_deptid);//返回部门总帐期初数
decimal rst_dept_bbala
decimal init_dept_bala,cur_dept_bala


  SELECT isnull(sum(uv_dept_bala.credit),0) - isnull(sum(uv_dept_bala.debit),0)
    into :cur_dept_bala
    FROM uv_dept_bala
   WHERE ( uv_dept_bala.accsetid = :arg_accsetid ) AND  
         ( uv_dept_bala.cmonth < :arg_cmonth ) AND  
			( uv_dept_bala.subid = :arg_subid ) and 
         ( uv_dept_bala.deptid = :arg_deptid )  
GROUP BY uv_dept_bala.cmonth,   
         uv_dept_bala.subid,   
         uv_dept_bala.deptid ;
			
  SELECT isnull(uv_dept_init.balance,0)
    into :init_dept_bala
    FROM uv_dept_init
   WHERE ( uv_dept_init.accsetid = :arg_accsetid ) AND 
			( uv_dept_init.subid = :arg_subid ) and 
         ( uv_dept_init.deptid = :arg_deptid )  ;
			
			
if isnull(cur_dept_bala) then cur_dept_bala=0
if isnull(init_dept_bala) then init_dept_bala=0


rst_dept_bbala=cur_dept_bala + init_dept_bala

return rst_dept_bbala
end function