急:请问oracle9i 支持 层次查询吗?层次查询语法:
select level,column_name,expression,…
from table_name
[where where_condition]
start with start_condition
connect by prior prior_condition;
select level,column_name,expression,…
from table_name
[where where_condition]
start with start_condition
connect by prior prior_condition;
解决方案 »
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