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我对 Oracle 11g 数据库有一些优化问题。我得到的查询结构如下:

select
    (....)
from
    (select ...)
where
    (...)
CONNECT BY
    PRIOR J.JDN_ID_POD = J.JDN_ID_NAD and (HUGE_CONDITION)
START WITH
    J.JDN_ID_NAD = 1 and (HUGE_CONDITION)

并且由于 HUGE_CONDITION 真的很大(约 3500 个字符)并且在两个地方,查询非常慢;有没有办法以另一种方式做到这一点?

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