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

forward prototypes
global function decimal f_rst_item_sub_bbalc (long arg_itemid, string arg_subid, long arg_cmonth, integer arg_postflag)
end prototypes

global function decimal f_rst_item_sub_bbalc (long arg_itemid, string arg_subid, long arg_cmonth, integer arg_postflag);//项目科目期初数
//1.计算初始化数
//2.计算期间发生数

Decimal rst_bbalc,init_bbalc,ins_bbalc

//1.
SELECT uv_item_init.balance INTO :init_bbalc FROM uv_item_init
	WHERE uv_item_init.accsetid = :sys_accsetid
	AND uv_item_init.itemid = :arg_itemid
	AND uv_item_init.subid = :arg_subid;
IF sqlca.SQLCode <> 0 OR IsNull(init_bbalc) THEN
	init_bbalc = 0.00
END IF

//2.
SELECT sum(uv_dept_bala.debit)-sum(uv_dept_bala.credit) INTO :ins_bbalc FROM uv_dept_bala
	WHERE uv_dept_bala.accsetid = :sys_accsetid
	AND uv_dept_bala.itemid = :arg_itemid
	AND uv_dept_bala.subid = :arg_subid
	AND uv_dept_bala.cmonth < :arg_cmonth
	And ( uv_dept_bala.postflag = :arg_postflag OR :arg_postflag = -1) ;
IF sqlca.SQLCode <> 0 OR IsNull(ins_bbalc) THEN
	ins_bbalc = 0.00
END IF

rst_bbalc = init_bbalc + ins_bbalc

RETURN rst_bbalc

end function