看下图bom结构,需求: 找出 A1 这份bom ,这个需求在工厂企业中很常见
select * from t29;
最终实现效果
实现过程如下:
1.demo表结构创建
create table t29 as
with a as
(select 'A' bmb01, 'B1' bmb03
from dual
union all
select 'A' bmb01, 'B2' bmb03
from dual
union all
select 'A1' bmb01, 'B1' bmb03
from dual
union all
select 'A1' bmb01, 'B2' bmb03
from dual
union all
select 'A2' bmb01, 'B1' bmb03
from dual
union all
select 'A2' bmb01, 'C' bmb03 from dual)
select * from a
详细实现过程如下:
https://articles.zsxq.com/id_2xm2mbbzjrjr.html