3.sql中的向上遞歸和向下遞歸

阿新 • • 發佈：2017-09-19

ble 編碼 conn table where 包含 span 順序 ffffff

1.向下遞歸

select * from table_name where 條件 connect by prior bmbm(本級關聯條件)=sjbmbm(上級關聯條件) start with bmbm(本級關聯條件)=‘610000000000‘(本級編碼)--包含本級

select * from table_name where 條件 connect by prior bmbm(本級關聯條件)=sjbmbm(上級關聯條件) start with sjbmbm(本級關聯條件)=‘610000000000‘(本級編碼)--不包含本級

2.向上遞歸

select * from table_name where 條件 connect by prior sjbmbm(上級關聯條件)=bmbm(本級關聯條件)

start with bmbm(本級關聯條件)=‘610528000000‘(本級編碼)--包含本級

select * from table_name where 條件 connect by prior sjbmbm(上級關聯條件)=bmbm(本級關聯條件) start with sjbmbm(本級關聯條件)=‘610528000000‘(本級編碼)--包含下級

註：向上遞歸和向下遞歸的區別在於中間關聯條件順序的不同，註意 start with 條件的意義也不同。

3.sql中的向上遞歸和向下遞歸

ble 編碼 conn table where 包含 span 順序 ffffff 1.向下遞歸 select * from table_name where 條件 connect by prior bmbm(本級關聯條件)=sjbmbm(上級關聯條件) start wit