K3没有批量BOM多级展开功能，如果需要对所有BOM进行批量多级展开，可以使用如下sql代码来实现。
1、创建BOM父项表
create table HWbom ( FId int identity(1,1), FItemID int )2、创建BOM子项表
create table HWbomchild ( FID int identity(1,1), FOrgID int, FParentID int, FLevel int, FSN nvarchar(200), FItemID int, FQty decimal(28,19), FBOMInterID int, FEntryID int ) 3、将父项BOM对应的物料内码插入父项表（可带条件） insert into HWbom (FItemID) select t.Fitemid from t_ICItem t inner join t_item t5 ON t5.FItemID = t.Fitemid left join icbom t6 on t6.fitemid=t.Fitemid left join ICBOMGROUP t7 on t7.finterid=t6.fparentid where t.FErpClsID in (2,3,5)--2代表自制件，3代表委外件，5代表虚拟件 and t5.fdeleted=0 and t5.fnumber in('物料编码1','物料编码2')--可根据需要限定BOM范围 order by t.fnumber4、根据父项表数据，将数据插入子项表，为后续卷算做准备 insert into HWbomchild (FOrgID,FParentID,FSN,FItemID,FQty,FBOMInterID,FEntryID,FLevel) select FId,-1 as FParentID,'001',u1.FItemID,1 as Fqty,t1.FInterID as FBOMInterID,-1 as FEntryID,0 from HWbom u1 left join ICBOM t1 on u1.FItemID=t1.FItemID5、BOM卷算 declare @level int set @level=1 while exists( select 1 from HWbomchild where FLevel=@level-1 and FItemID in (select Fitemid from icbom) ) and @level<20 begin insert into HWbomchild (FOrgID,FParentID,FSN,FItemID,FQty,FBOMInterID,FEntryID,FLevel) select u1.FOrgID,u1.FID,u1.FSN+'.'+right('000'+CONVERT(nvarchar(50),t2.Fentryid),3),t2.Fitemid,u1.FQty*(t2.FQty/t1.FQty)/(1-t2.FScrap/100), t2.FInterID,t2.FEntryID,@level from HWbomchild u1 inner join icbom t1 on u1.FItemID=t1.FItemID inner join ICBOMChild t2 on t2.FInterID=t1.FInterID where u1.FLevel=@level-1 set @level=@level+1 end6、最终BOM展开数据检索，执行结果可复制到Excel select t2.FNumber 产品代码,t2.FName 产品名称,t2.FModel 产品规格, t1.FSN 序号, t3.FNumber 材料代码,t3.FName 材料名称,t3.FModel 材料规格,t1.FQty 产品用量,yy.fname 材料属性, t5.FQty 单位用量, t5.FScrap 损耗率, t4.FBOMNumber BOM编号, t6.FName as 是否跳层, t5.FNote 备注, t5.FPositionNo 位置号 from HWbom u1 inner join HWbomchild t1 on u1.FId=t1.FOrgID inner join t_icitem t2 on t2.FItemID=u1.FItemID inner join t_ICItem t3 on t3.FItemID=t1.FItemID left join ICBOM t4 on t4.FInterID=t1.FBOMInterID left join ICBOMChild t5 on t5.FInterID=t1.FBOMInterID and t5.FEntryID=t1.FEntryID left join t_SubMessage t6 on t6.FInterID=t4.FBOMSkip inner join t_SubMessage yy on yy.FInterID=t3.FErpClsID --where fbomnumber='物料编码' order by u1.FId,t1.FSN 7、最后清空父项表和子项表数据，以便下次运算使用（不用重新建表了） TRUNCATE TABLE HWbom --清空附表数据 TRUNCATE TABLE HWbomchild --清空子表数据 8、如果不再使用，可以将这两个表删除 drop table HWbom --删除父表 drop table HWbomchild --删除子表