ORACLE获取BOM清单

BOM 结构如图

-- 1DH142-022 （DRIVE)

-- 100729421  (PCBA)

-- 100764148  (HDA)

-- 100687050 (VCM)

-- 100701274 (COVER)

-- 100701275 (HSA)

-- 100787293

-- 100709989 (VCM)

-- 100743069 (COVER)

-- 100766409 (HSA)

1. ORACLE 递归查询根节点下所有子节点清单

select parent_assembly, child_component, site_name, level
  From scpdata.scp_pbom
 start with parent_assembly = '1DH142-022'
connect by prior child_component = parent_assembly;

 

2. ORACLE 从子节点开始向上递归遍历所有父节点

select parent_assembly, child_component, site_name, level
  From scpdata.scp_pbom
 start with child_component = ''
connect by prior parent_assembly = child_component
       and prior site_name = site_name;

3. 查询当前节点的叔叔伯父节点（兄弟父节点）

with bom as
 (select parent_assembly,
         child_component,
         site_name,
         prior child_component prev_child,
         level le
    from scpdata.scp_pbom
   start with parent_assembly = '1DH142-022'
  connect by prior child_component = parent_assembly)
select distinct b.*
  From bom a
  left join bom b
    on a.child_component = ''
 where b.le = (a.le - 1)
   and b.child_component not in (a.parent_assembly);

4. 查询族兄

with bom as
 (select parent_assembly,
         child_component,
         site_name,
         prior child_component prev_child,
         level le
    from scpdata.scp_pbom
   start with parent_assembly = '1DH142-022'
  connect by prior child_component = parent_assembly)
select distinct b.*
  From bom a
  left join bom b
    on a.child_component = ''
 where b.le = a.le
   and b.child_component <> a.child_component;

5. 格式化层级

select lpad(' ', level*2, ' ') || child_component, site_name, level
  From scpdata.scp_pbom
 start with parent_assembly = '1DH142-022'
connect by prior child_component = parent_assembly;

6. connect_by_root 查找根节点

select connect_by_root parent_assembly ROOT, parent_assembly, site_name, level
  From scpdata.scp_pbom
 start with parent_assembly = '1DH142-022'
connect by prior child_component = parent_assembly;

7. connect_by_isleaf标注是否叶子节点

select connect_by_root parent_assembly ROOT, parent_assembly,  child_component, site_name, level, connect_by_isleaf
  From scpdata.scp_pbom
 start with parent_assembly = '1DH142-022'
connect by nocycle prior child_component = parent_assembly;